Phesgo (pertuzumab-trastuzumab-hyaluronidase-zzxf)
Antineoplastic - HER2 Inhibitors Subcutaneous Vial (Ml)
Last reviewed · Source: First Databank (FDB) drug data
Overview
Pertuzumab, trastuzumab, and hyaluronidase-zzxf (pertuzumab/trastuzumab/hyaluronidase-zzxf) is a fixed-combination antineoplastic agent containing pertuzumab (a recombinant humanized anti-human epidermal growth factor receptor type 2 (anti-HER2/ERBB2) monoclonal antibody), trastuzumab (a recombinant humanized anti-HER2 monoclonal antibody), and hyaluronidase-zzxf (a recombinant endoglycosidase that enhances dispersion and absorption of pertuzumab and trastuzumab).
Pertuzumab is a recombinant humanized monoclonal antibody that targets the extracellular dimerization domain of the human epidermal growth factor receptor 2 protein (HER2). Trastuzumab is a humanized IgG1 kappa monoclonal antibody that selectively binds with high affinity to the extracellular domain of HER2. Both drugs are produced by recombinant DNA technology in a mammalian cell (Chinese hamster ovary) culture.
Pertuzumab and trastuzumab also are referred to as HER2/neu receptor antagonists.
Hyaluronidase-zzxf, a recombinant endoglycosidase, is produced by recombinant DNA technology in mammalian cell (Chinese hamster ovary) culture. Hyaluronidase acts locally to temporarily increase permeability of subcutaneous tissue to increase dispersion and absorption of pertuzumab and trastuzumab. Hyaluronidase increases permeability of the subcutaneous tissue by depolymerizing hyaluronan, a polysaccharide found in the extracellular matrix of the subcutaneous tissue.
The effects of hyaluronidase are reversible; the permeability of subcutaneous tissue is restored in 24 to 48 hours.
Pertuzumab binds specifically to the extracellular dimerization domain (subdomain II) of the HER2 protein, blocking heterodimerization of HER2 with other ligand-bound members of the HER family (i.e., epidermal growth factor receptor (HER1/EGFR), HER3, HER4). Blockade of HER2 heterodimerization by pertuzumab results in inhibition of ligand-activated intracellular signaling through 2 major signal pathways, mitogen-activated protein kinase (MAPK) and phosphoinositide 3-kinase (PI3K/Akt), potentially causing cell growth arrest and apoptosis, respectively. Trastuzumab binds to the extracellular domain (subdomain IV) of the HER2 protein, blocking ligand-independent, HER2 mediated cell proliferation and inhibiting intracellular signaling through PI3K signaling pathway in human tumor cells that overexpress HER2/neu protein.
Pertuzumab- and trastuzumab-mediated antibody-dependent cellular cytotoxicity (ADCC) occurs preferentially in cells that overexpress the HER2 protein.
Pertuzumab alone inhibits proliferation of human tumor cells, while the combination of pertuzumab and trastuzumab has been shown to substantially augment antitumor activity in HER2-overexpressing xenograft models.
Following subcutaneous administration, the absolute bioavailability of pertuzumab and trastuzumab is approximately 70 and 80%, respectively. Peak plasma concentrations of pertuzumab and trastuzumab are observed at approximately 4 days. Following subcutaneous administration, at cycle 7, AUC and peak plasma concentrations of pertuzumab were approximately 34% lower and 5% higher, respectively, compared to that following IV administration of pertuzumab; AUC and peak plasma concentrations of trastuzumab were approximately 31% lower and 9% higher, respectively, compared to that following IV administration of trastuzumab.
The pharmacokinetics of pertuzumab, trastuzumab, and hyaluronidase do not appear to be affected by age or ethnicity (Asian versus non-Asian). Baseline serum albumin concentration and lean body weight had a minor influence on pharmacokinetic parameters.
USES: This product contains 3 ingredients: pertuzumab, trastuzumab, and hyaluronidase. It is used to treat breast cancer. Pertuzumab and trastuzumab belong to a class of medications known as monoclonal antibodies.
These medications work by slowing or stopping the growth of cancer cells. This product also contains hyaluronidase, which helps your body absorb pertuzumab and trastuzumab given by injection under the skin.
Generic name: pertuzumab-trastuzumab-hyaluronidase-zzxf
Pronunciation: (per-TOOZ-ue-mab/tras-TOOZ-ue-mab/HYE-al-ure-ON-i-dase)
Drug class: Antineoplastic - HER2 Inhibitors
Therapeutic class: Antineoplastics
Reference product & biosimilars
No reference, biosimilar or interchangeable associated with this drug.
Today’s intelligence on Phesgo
Indications
The following indications are listed for Phesgo:
- Her2-Positive Carcinoma Of Breast
Dosing
Clinicians should consult published protocols for information on the dosage, method of administration, and administration sequence of other antineoplastic agents used in combination regimens with pertuzumab, trastuzumab, and hyaluronidase.
If a dose of pertuzumab/trastuzumab/hyaluronidase-zzxf is missed or delayed and the time between 2 sequential injections is less than 6 weeks, the maintenance dose of pertuzumab/trastuzumab/hyaluronidase-zzxf should be administered as soon as possible; do not wait until the next planned dose. If the time between 2 sequential injections is 6 weeks or longer, readminister the initial dose of pertuzumab/trastuzumab/hyaluronidase-zzxf followed every 3 weeks thereafter by a maintenance dose.
In patients receiving pertuzumab/trastuzumab/hyaluronidase-zzxf in combination with anthracycline-based chemotherapy for early breast cancer, administer pertuzumab/trastuzumab/hyaluronidase-zzxf after administration of the anthracycline is completed.
In patients receiving pertuzumab/trastuzumab/hyaluronidase-zzxf with taxane-based chemotherapy (docetaxel or paclitaxel) for early breast cancer, administer the taxane-based chemotherapy after administration of pertuzumab/trastuzumab/hyaluronidase-zzxf.
In patients receiving pertuzumab/trastuzumab/hyaluronidase-zzxf for metastatic breast cancer with docetaxel, administer docetaxel after pertuzumab/trastuzumab/hyaluronidase-zzxf.
Dosage adjustment is not necessary for concomitant chemotherapy.
Dosage reductions for adverse effects are not recommended for pertuzumab/trastuzumab/hyaluronidase-zzxf; however, therapy interruption or treatment discontinuance may be necessary.
The prescribing information for concomitant chemotherapy (anthracycline, docetaxel, paclitaxel) should be consulted for detailed information on dosage modifications for these drugs.
Pertuzumab/trastuzumab/hyaluronidase-zzxf is administered by subcutaneous injection only; do not administer by IV or by IM injection.
Pertuzumab/trastuzumab/hyaluronidase-zzxf injection is commercially available in single-dose vials containing the fixed combination of 1200 mg pertuzumab, 600 mg trastuzumab, and 30,000 units hyaluronidase-zzxf in 15 mL of solution (for initial dose) or the fixed combination of 600 mg pertuzumab, 600 mg trastuzumab, and 20,000 units hyaluronidase-zzxf in 10 mL of solution (for maintenance doses). A single dose of pertuzumab/trastuzumab/hyaluronidase-zzxf requires administration of the entire contents of one vial. The drug should not be diluted. Vials of pertuzumab/trastuzumab/hyaluronidase-zzxf injection contain no preservatives and are intended for single-use only; any unused portions should be discarded.
Pertuzumab/trastuzumab/hyaluronidase-zzxf injection vials should be stored at 2-8degreesC in the original carton protected from light, and should not be frozen or shaken. The drug should be inspected for particulate matter and discoloration prior to administration. The solution should appear clear to opalescent and colorless to light brown, and should not be used if it is cloudy, discolored, or contains particulate matter.
Prior to administration, the drug should be withdrawn from the vial into a syringe using a transfer needle. If not used immediately, syringes containing pertuzumab/trastuzumab/hyaluronidase-zzxf solution may be stored at room temperature for up to 4 hours or in the refrigerator at 2-8degreesC for up to 24 hours. Prior to storage, the transfer needle should be replaced with a syringe cap and labeled.
Subcutaneous injections of pertuzumab/trastuzumab/hyaluronidase-zzxf should be administered with a 25- to 27-gauge, (3/8)-(5/8)-inch hypodermic needle into the thigh. Immediately prior to administration, the hypodermic needle should be attached to the syringe; the volume of drug solution in the syringe should be adjusted to 15 mL for the initial dose and 10 mL for maintenance doses. The injection site should be alternated between the left and right thigh and should be at least 1 inch (2.5 cm) from the previous injection site; avoid any area that is tender, red, bruised, or hard. A single dose of pertuzumab/trastuzumab/hyaluronidase-zzxf should not be split into 2 syringes or administered into two different administration sites. During the treatment course with pertuzumab/trastuzumab/hyaluronidase-zzxf, other medications for subcutaneous administration should preferably be injected at different sites.
Pertuzumab/trastuzumab/hyaluronidase-zzxf is compatible with stainless steel, polypropylene, polycarbonate, polyethylene, polyurethane, polyvinyl chloride, and fluorinated ethylene polypropylene.
| Drug label | Dosing type | Instructions |
|---|---|---|
| Phesgo 1,200-600Mg-30,000 Unit | Maintenance | Inject 15 milliliters over approximately 8 minute(s) by subcutaneous route once. |
| Phesgo 600-600 Mg-20,000 Unit | Maintenance | Inject 10 milliliters over approximately 5 minute(s) by subcutaneous route every 3 weeks. |
No dosing information is available for this tab.
Drug interactions
There is no enhanced messaging for this drug.
Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient.
Immunosuppressive; Immunomod/Cladribine Onc Inj (10 Mg/5 Ml)
SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient.
MECHANISM OF ACTION: Cladribine in combination with immunosuppressives and immune-modulators all suppress the immune system.(1-2)
CLINICAL EFFECTS: Concurrent use of cladribine with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections.(1-2)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: Recommendations for cladribine regarding this interaction differ between regulatory approving agencies. The UK and AU manufacturers of Litak state that concomitant use of other myelosuppressive medicinal products with cladribine is contraindicated.(1-2) The Israeli manufacturer of Litak states that cladribine should not be used concomitantly with other myelosuppressive medicinal products.(3)
DISCUSSION: The risk of severe myelotoxicity and long-lasting immunosuppression is increased in patients with a disease-related bone marrow infiltration or a previous myelosuppressive treatment.(1-3)
Immunosuppressives; Immunomodulators/Efalizumab; Natalizumab
SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient.
MECHANISM OF ACTION: Natalizumab,(1-3) efalizumab,(4) immunosuppressives, and immunomodulators all suppress the immune system.
CLINICAL EFFECTS: Concurrent use of natalizumab(1-3) or efalizumab(4) with immunosuppressives or immunomodulators may result in an increased risk of infections, including progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).
PREDISPOSING FACTORS: Previous JCV infection, longer duration of natalizumab treatment - especially if greater than 2 years, and prior or concomitant treatment with immunosuppressant medication are all independent risk factors which increase the risk for PML.(1,5) The FDA has estimated PML incidence stratified by risk factors: If anti-JCV antibody positive, no prior immunosuppressant use and natalizumab treatment less than 25 months, incidence <1/1,000. If anti-JCV antibody positive, history of prior immunosuppressant use and natalizumab treatment less than 25 months, incidence 2/1,000 If anti-JCV antibody positive, no prior immunosuppressant use and natalizumab treatment 25-48 months, incidence 4/1,000 If anti-JCV antibody positive, history of prior immunosuppressant use and natalizumab treatment 25-48 months, incidence 11/1,000.
PATIENT MANAGEMENT: The US manufacturer of natalizumab states patients with Crohn's disease should not receive concurrent immunosuppressants, with the exception of limited overlap of corticosteroids, due to the increased risk for PML. For new natalizumab patients currently receiving chronic oral corticosteroids for Crohn's Disease, begin corticosteroid taper when therapeutic response to natalizumab has occurred. If corticosteroids cannot be discontinued within six months of starting natalizumab, discontinue natalizumab.(3) The US manufacturer of natalizumab states that natalizumab should not ordinarily be used in multiple sclerosis patients receiving immunosuppressants or immunomodulators due to the increased risk for PML. Immunosuppressives include, but are not limited to azathioprine, cyclophosphamide, cyclosporine, mercaptopurine, methotrexate, mitoxantrone, mycophenolate, and corticosteroids.(3,6) The UK manufacturer of natalizumab states that concurrent use with immunosuppressives or antineoplastic agents is contraindicated.(1) The Canadian manufacturer of natalizumab states that natalizumab should not be used with immunosuppressive or immunomodulatory agents.(2) The US manufacturer of certolizumab states that concurrent therapy with natalizumab is not recommended.(7)
DISCUSSION: Progressive multifocal leukoencephalopathy has been reported in patients receiving concurrent natalizumab were recently or concomitantly taking immunomodulators or immunosuppressants.(1-5,8,9) In a retrospective cohort study of multiple sclerosis patients newly initiated on a disease-modifying therapy, use of high-efficacy agents (alemtuzumab, natalizumab, or ocrelizumab) resulted in the same risk of overall infections as moderate-efficacy agents, but there was an elevated risk of serious infections (adjusted hazard ratio [aHR] = 1.24, 95% confidence interval (CI) = 1.06-1.44) and UTIs (aHR = 1.21, 95% CI = 1.14-1.30).(10)
Selected Immunosuppressants/Nadofaragene Firadenovec
SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient.
MECHANISM OF ACTION: Nadofaragene firadenovec may contain low levels of replication-competent adenovirus.(1)
CLINICAL EFFECTS: Concurrent use of nadofaragene firadenovec in patients receiving immunosuppressive therapy may cause disseminated adenovirus infection.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: Individuals who are immunosuppressed or immune-deficient should not receive nadofaragene firadenovec.(1)
DISCUSSION: Nadofaragene firadenovec is a non-replicating adenoviral vector-based gene therapy but may contain low levels of replication-competent adenovirus. Immunocompromised persons, including those receiving immunosuppressant therapy, may be at risk for disseminated adenovirus infection.(1)
Selected Immunosuppressants/Talimogene Laherparepvec
SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient.
MECHANISM OF ACTION: Talimogene laherparepvec is a live, attenuated herpes simplex virus.(1)
CLINICAL EFFECTS: Concurrent use of talimogene laherparepvec in patients receiving immunosuppressive therapy may cause a life-threatening disseminated herpetic infection.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: Talimogene laherparepvec is contraindicated in immunosuppressed patients.(1) The magnitude of immunocompromise and associated risks due to immunosuppressant drugs should be determined by a physician.
DISCUSSION: Concurrent use of talimogene laherparepvec in patients receiving immunosuppressive therapy may cause a life-threatening disseminated herpetic infection.(1)
Selected Immunosuppressive Agents/Live Vaccines; Live Bcg
SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient.
MECHANISM OF ACTION: A variety of disease modifying agents suppress the immune system. Immunocompromised patients may be at increased risk for uninhibited replication after administration of live, attenuated vaccines or intravesicular BCG. Immune response to vaccines may be decreased during periods of immunocompromise.(1)
CLINICAL EFFECTS: The expected serum antibody response may not be obtained and/or the vaccine may result in illness.(1) After instillation of intravesicular BCG, immunosuppression may interfere with local immune response, or increase the severity of mycobacterial infection following inadvertent systemic exposure.(2)
PREDISPOSING FACTORS: Immunosuppressive diseases (e.g. hematologic malignancies, HIV disease), treatments (e.g. radiation) and drugs may all increase the magnitude of immunodeficiency.
PATIENT MANAGEMENT: The Centers for Disease Control(CDC) Advisory Committee on Immunization Practices (ACIP) states that live-virus and live, attenuated vaccines should not be administered to patients who are immunocompromised. The magnitude of immunocompromise and associated risks should be determined by a physician.(1) For patients scheduled to receive chemotherapy, vaccination should ideally precede the initiation of chemotherapy by 14 days. Patients vaccinated while on immunosuppressive therapy or in the 2 weeks prior to starting therapy should be considered unimmunized and should be revaccinated at least 3 months after discontinuation of therapy.(1) Patients who receive anti-B cell therapies should not receive live vaccines for at least 6 months after such therapies due to a prolonged duration of immunosuppression. An exception is the Zoster vaccine, which can be given at least 1 month after receipt of anti-B cell therapies.(1) The US manufacturer of abatacept states live vaccines should not be given during or for up to 3 months after discontinuation of abatacept.(2) The US manufacturer of live BCG for intravesicular treatment of bladder cancer states use is contraindicated in immunosuppressed patients.(3) The US manufacturer of daclizumab states live vaccines are not recommended during and for up to 4 months after discontinuation of treatment.(4) The US manufacturer of guselkumab states that live vaccines should be avoided during treatment with guselkumab.(5) The US manufacturer of inebilizumab-cdon states that live vaccines are not recommended during treatment and after discontinuation until B-cell repletion. Administer all live vaccinations at least 4 weeks prior to initiation of inebilizumab-cdon.(6) The US manufacturer of ocrelizumab states that live vaccines are not recommended during treatment and until B-cell repletion occurs after discontinuation of therapy. Administer all live vaccines at least 4 weeks prior to initiation of ocrelizumab.(7) The US manufacturer of ozanimod states that live vaccines should be avoided during and for up to 3 months after discontinuation of ozanimod.(8) The US manufacturer of siponimod states that live vaccines are not recommended during treatment and for up to 4 weeks after discontinuation of treatment.(9) The US manufacturer of ustekinumab states BCG vaccines should not be given in the year prior to, during, or the year after ustekinumab therapy.(10) The US manufacturer of satralizumab-mwge states that live vaccines are not recommended during treatment and should be administered at least four weeks prior to initiation of satralizumab-mwge.(11) The US manufacturer of ublituximab-xiiy states that live vaccines are not recommended during treatment and until B-cell recovery. Live vaccines should be administered at least 4 weeks prior to initiation of ublituximab-xiiy.(12) The US manufacturer of etrasimod states that live vaccines should be avoided during and for 5 weeks after treatment. Live vaccines should be administered at least 4 weeks prior to initiation of etrasimod.(13) The US manufacturer of emapalumab-lzsg states that live vaccines should not be administered to patients receiving emapalumab-lzsg and for at least 4 weeks after the last dose of emapalumab-lzsg. The safety of immunization with live vaccines during or following emapalumab-lzsg therapy has not been studied.(14) The US manufacturer of sibeprenlimab-szsi states live vaccines should not be given within 30 days prior to initiation or during treatment with sibeprenlimab-szsi.(15)
DISCUSSION: Killed or inactivated vaccines do not pose a danger to immunocompromised patients.(1) Patients with a history of leukemia who are in remission and have not received chemotherapy for at least 3 months are not considered to be immunocompromised.(1)
Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
Biologic Therapies/Anifrolumab
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of anifrolumab with other biologic therapies may result in additive or synergistic effects on the immune system.(1)
CLINICAL EFFECTS: Concurrent use of anifrolumab with other biologic therapies may increase the risk of serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The concurrent use of anifrolumab with other biologic therapies is not recommended.(1)
DISCUSSION: The combination of anifrolumab with other biologic therapies has not been studied and is not recommended.(1)
Igg Antibodies And Derivatives/Efgartigimod-Alfa
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: The neonatal Fc receptor (FcRn) prevents catabolism and mediates recycling of IgG and albumin, which leads to their long persistence in the body.(1,2) Efgartigimod-alfa binds to FcRn and may decrease systemic exposure of other ligands of FcRn, like immunoglobulins and IgG-based antibodies.(3)
CLINICAL EFFECTS: The effectiveness of medicines that bind to FcRn may be decreased.(3)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The manufacturer of efgartigimod-alfa states that efgartigimod-alfa should not be combined with long-term use of FcRn-binding medications. If the medication is essential for the patient, efgartigimod-alfa should be discontinued.(3)
DISCUSSION: Clinical drug interaction studies with efgartigimod-alfa have not been performed. Efgartigimod-alfa may decrease concentrations of compounds that bind to the human FcRn.(3)
Igg Antibodies And Derivatives/Nipocalimab-Aahu
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: The neonatal Fc receptor (FcRn) prevents catabolism and mediates recycling of IgG and albumin, which leads to their long persistence in the body.(1,2) Nipocalimab-aahu binds to FcRn and may decrease systemic exposure of other ligands of FcRn, like immunoglobulins and IgG-based antibodies.(3)
CLINICAL EFFECTS: The effectiveness of medicines that bind to FcRn may be decreased.(3)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The manufacturer of nipocalimab-aahu states that nipocalimab-aahu should not be combined with long-term use of FcRn-binding medications. If the medication is essential for the patient, nipocalimab-aahu should be discontinued.(3)
DISCUSSION: Clinical drug interaction studies with nipocalimab-aahu have not been performed. Nipocalimab-aahu may decrease concentrations of compounds that bind to the human FcRn.(3)
Immunosuppres;Immunomodul/Selected Multiple Sclerosis Agents
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Ocrelizumab or ofatumumab in combination with immunosuppressives and immune-modulators all suppress the immune system.(1,2)
CLINICAL EFFECTS: Concurrent use of ocrelizumab or ofatumumab with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections, such as disseminated herpetic infection or progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).(1,2)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: The ocrelizumab US prescribing information states: - Ocrelizumab and other immune-modulating or immunosuppressive therapies, (including immunosuppressant doses of corticosteroids) are expected to increase the risk of immunosuppression, and the risk of additive immune system effects must be considered if these therapies are coadministered with ocrelizumab. When switching from drugs with prolonged immune effects, such as daclizumab, fingolimod, natalizumab, teriflunomide, or mitoxantrone, the duration and mode of action of these drugs must be considered to avoid unintended additive immunosuppressive effects when initiating ocrelizumab.(1) The ofatumumab US prescribing information states: - Ofatumumab and other immunosuppressive therapies (including systemic corticosteroids) may have the potential for increased immunosuppressive effects and increase the risk of infection. When switching between therapies, the duration and mechanism of action of each therapy should be considered due to the potential for additive immunosuppressive effects. Ofatumumab for MS therapy has not been studied in combination with other MS agents that suppress the immune system.(2)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients who previously received immunomodulators or immunosuppressants.(1,2) In a retrospective cohort study of multiple sclerosis patients newly initiated on a disease-modifying therapy, use of high-efficacy agents (alemtuzumab, natalizumab, or ocrelizumab) resulted in the same risk of overall infections as moderate-efficacy agents, but there was an elevated risk of serious infections (adjusted hazard ratio [aHR] = 1.24, 95% confidence interval (CI) = 1.06-1.44) and UTIs (aHR = 1.21, 95% CI = 1.14-1.30).(3)
Immunosuppressives; Immunomodulators/Baricitinib
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of baricitinib with other biologic disease-modifying antirheumatic drugs (DMARDs) or potent immunosuppressants such as azathioprine or cyclosporine may result in additive or synergistic effects on the immune system.
CLINICAL EFFECTS: Concurrent use of baricitinib with other biologic DMARDs or potent immunosuppressants such as azathioprine or cyclosporine may increase the risk of serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of baricitinib states that concurrent use of baricitinib with biologic DMARDs or potent immunosuppressants is not recommended.(1)
DISCUSSION: Most patients who developed serious infections while being treated with baricitinib were on concomitant immunosuppressants like methotrexate and corticosteroids. The combination of baricitinib with other biologic DMARDs has not been studied.(1)
Immunosuppressives; Immunomodulators/Cladribine Oral
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Cladribine in combination with immunosuppressives and immune-modulators all suppress the immune system.(1-2)
CLINICAL EFFECTS: Concurrent use of cladribine with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections, such as disseminated herpetic infection or progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).(1-2)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: Recommendations for cladribine regarding this interaction differ between regulatory approving agencies. The cladribine US prescribing information states: -Concomitant use with myelosuppressive or other immunosuppressive drugs is not recommended. Acute short-term therapy with corticosteroids can be administered. In patients who have previously been treated with immunomodulatory or immunosuppressive drugs, consider potential additive effect, the mode of action, and duration of effect of the other drugs prior to initiation of cladribine.(1) The cladribine Canadian prescribing information states: -Use of cladribine in immunocompromised patients is contraindicated because of a risk of additive effects on the immune system. Acute short-term therapy with corticosteroids can be administered during cladribine treatment.(2)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients who previously received immunomodulators or immunosuppressants.(1-2)
Immunosuppressives; Immunomodulators/Deuruxolitinib
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Deuruxolitinib, immunosuppressives, and immunomodulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of deuruxolitinib and potent immunosuppressants may increase the risk of serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of deuruxolitinib states that concurrent use of deuruxolitinib with other JAK inhibitors, biologic immunomodulators, cyclosporine or other potent immunosuppressants is not recommended.(1) If concurrent use cannot be avoided, patients should be monitored for signs and symptoms of infection. If a patient develops a serious or opportunistic infection, interrupt deuruxolitinib treatment until the infection is controlled.
DISCUSSION: Serious infections have been reported in patients receiving treatment with deuruxolitinib.(1)
Immunosuppressives; Immunomodulators/Etrasimod
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Etrasimod causes reversible sequestration of lymphocytes in lymphoid tissues, resulting in a mean 55% decrease in peripheral blood lymphocyte count at 52 weeks.(1) Other immunosuppressives and immune-modulators also suppress the immune system.
CLINICAL EFFECTS: Concurrent use of etrasimod with immunosuppressive or immune-modulating agents may result in an increased risk of serious and fatal infections, such as disseminated herpetic infection, cryptococcal infection, or progressive multifocal leukoencephalopathy (PML).(1)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications increases the risk of adverse effects.
PATIENT MANAGEMENT: The etrasimod US prescribing information states etrasimod has not been studied in combination with anti-neoplastic, immune-modulating, or immunosuppressive therapies. Concomitant administration of these therapies with etrasimod should be avoided because of the risk of additive immune effects during therapy and in the weeks following administration. Etrasimod's effect on peripheral lymphocytes may persist for up to 5 weeks after discontinuation.(1) When switching from drugs with prolonged immune effects, the half-life and mode of action of these drugs must be considered in order to avoid unintended additive immunosuppressive effects.(1)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections, cryptococcal meningitis, disseminated cryptococcal infections, and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients treated with other sphingosine-1 phosphate receptor modulators.(1)
Immunosuppressives; Immunomodulators/Filgotinib
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of filgotinib with other immunosuppressants or immunomodulators including azathioprine, cyclosporine, tacrolimus, biologic disease-modifying antirheumatic drugs (DMARDs), or other Janus kinase (JAK) inhibitors may result in additive or synergistic effects on the immune system.(1)
CLINICAL EFFECTS: Concurrent use of filgotinib with other immunosuppressants or immunomodulators including azathioprine, cyclosporine, tacrolimus, biologic DMARDs, or other JAK inhibitors may increase the risk of serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The UK manufacturer of filgotinib states that concurrent use of filgotinib with other immunosuppressants or immunomodulators including azathioprine, cyclosporine, tacrolimus, biologic DMARDs, or other JAK inhibitors is not recommended.(1)
DISCUSSION: Serious infections have been reported in patients receiving filgotinib. Caution should be used in patients with a higher incidence of serious infection, including elderly patients aged 75 years and older.(1)
Immunosuppressives; Immunomodulators/Fingolimod
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Fingolimod in combination with immunosuppressives and immune-modulators all suppress the immune system.(1-3)
CLINICAL EFFECTS: Concurrent use of fingolimod with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections, such as disseminated herpetic infection or progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).(1-3)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: Recommendations for fingolimod regarding this interaction differ between regulatory approving agencies. The fingolimod US prescribing information states: - Antineoplastic, immune-modulating, or immunosuppressive therapies, (including corticosteroids) are expected to increase the risk of immunosuppression, and the risk of additive immune system effects must be considered if these therapies are coadministered with fingolimod. When switching from drugs with prolonged immune effects, such as natalizumab, teriflunomide or mitoxantrone, the duration and mode of action of these drugs must be considered to avoid unintended additive immunosuppressive effects when initiating fingolimod.(1) The fingolimod Canadian prescribing information states: - Concurrent use with immunosuppressive or immunomodulatory agents is contraindicated due to the risk of additive immune system effects. However, co-administration of a short course of corticosteroids (up to 5 days) did not increase the overall rate of infection in patients participating Phase III clinical trials.(2) The fingolimod UK specific product characteristics states: - Fingolimod is contraindicated in patients currently receiving immunosuppressive therapies or those immunocompromised by prior therapies. When switching patients from another disease modifying therapy to Gilenya, the half-life and mode of action of the other therapy must be considered in order to avoid an additive immune effect whilst at the same time minimizing the risk of disease activation.(3)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients who previously received immunomodulators or immunosuppressants.(1-3)
Immunosuppressives; Immunomodulators/Inebilizumab
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Inebilizumab, immunosuppressives, and immunomodulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of inebilizumab with immunosuppressive or immunomodulating agents may result in myelosuppression including neutropenia resulting in an increased risk for serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of inebilizumab states that the concurrent use of inebilizumab with immunosuppressive agents, including systemic corticosteroids, may increase the risk of infection. If concurrent therapy is warranted, consider the risk of additive immune suppression and monitor based on prescribing information for both agents.(1)
DISCUSSION: Inebilizumab has not been studied in combination with other immunosuppressants. If concurrent therapy is warranted, consider the potential for increased immunosuppressive risks from both agents. The most common infections reported by inebilizumab treated patients in the randomized and open-label clinical trial periods included urinary tract infections (20%), nasopharyngitis (13%), upper respiratory tract infections (8%), and influenza (7%). Although there been no cases of Hepatitis B virus reactivation or progressive multifocal leukoencephalopathy reported in patients taking inebilizumab, these infections have been observed in patients taking other B-cell-depleting antibodies.(1)
Immunosuppressives; Immunomodulators/Ozanimod
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Ozanimod in combination with immunosuppressives and immune-modulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of ozanimod with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections, such as disseminated herpetic infection or progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).(1)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: The ozanimod US prescribing information state this information regarding this interaction: -Ozanimod has not been studied in combination with anti-neoplastic, immune-modulating, or immunosuppressive therapies. Caution should be used during concomitant administration because of the risk of additive immune effects during therapy and in the week following administration. When switching from drugs with prolonged immune effects, the half-life and mode of action of these drugs must be considered in order to avoid unintended additive immunosuppressive effects. Initiating treatment with ozanimod after alemtuzumab is not recommended. However, ozanimod can generally be started immediately after discontinuation of beta interferon or glatiramer acetate.(1)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients who previously received immunomodulators or immunosuppressants.(1)
Immunosuppressives; Immunomodulators/Ponesimod
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Ponesimod in combination with immunosuppressives and immune-modulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of ponesimod with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections, such as disseminated herpetic infection, cryptococcal infection, or progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).(1)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: The ponesimod US prescribing information states ponesimod has not been studied in combination with anti-neoplastic, immune-modulating, or immunosuppressive therapies. Caution should be used during concomitant administration because of the risk of additive immune effects during therapy and in the weeks following administration. When switching from drugs with prolonged immune effects, the half-life and mode of action of these drugs must be considered in order to avoid unintended additive immunosuppressive effects. Initiating treatment with ponesimod after alemtuzumab is not recommended. However, ponesimod can generally be started immediately after discontinuation of beta interferon or glatiramer acetate.(1)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections, cryptococcal meningitis, disseminated cryptococcal infections, and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients who previously received immunomodulators or immunosuppressants.(1)
Immunosuppressives; Immunomodulators/Ritlecitinib
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Ritlecitinib, immunosuppressives, and immunomodulators all suppress the immune system.
CLINICAL EFFECTS: Concurrent use of ritlecitinib with immunosuppressives or immunomodulators may result in an increased risk of serious infections.
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of ritlecitinib states that concurrent use of ritlecitinib with other JAK inhibitors, biologic immunomodulators, cyclosporine or other potent immunosuppressants is not recommended.(1)
DISCUSSION: Serious infections have been reported in patients receiving ritlecitinib. Reported infections included appendicitis, COVID-19 infection (including pneumonia), and sepsis. Reports of viral reactivation, including herpes virus reactivation was reported in clinical studies with ritlecitinib.(1)
Immunosuppressives; Immunomodulators/Siponimod
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Siponimod in combination with immunosuppressives and immune-modulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of siponimod with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections, such as disseminated herpetic infection or progressive multifocal leukoencephalopathy (PML), an opportunistic infection caused by the JC virus (JCV).(1)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: The siponimod US prescribing information state this information regarding this interaction: -Siponimod has not been studied in combination with anti-neoplastic, immune-modulating, or immunosuppressive therapies. Caution should be used during concomitant administration because of the risk of additive immune effects during therapy and in the week following administration. When switching from drugs with prolonged immune effects, the half-life and mode of action of these drugs must be considered in order to avoid unintended additive immunosuppressive effects. Initiating treatment with siponimod after alemtuzumab is not recommended. However, siponimod can generally be started immediately after discontinuation of beta interferon or glatiramer acetate.(1)
DISCUSSION: Fatal disseminated herpes zoster and herpes simplex infections and cases of progressive multifocal leukoencephalopathy (PML) have been reported in patients who previously received immunomodulators or immunosuppressants.(1)
Immunosuppressives; Immunomodulators/Tofacitinib
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of tofacitinib and azathioprine, other biologic disease-modifying antirheumatic drugs (DMARDs), or potent immunosuppressants may result in additive or synergistic effects on the immune system.(1)
CLINICAL EFFECTS: Concurrent use of tofacitinib and azathioprine, other biologic DMARDs, or potent immunosuppressants use may increase the risk of serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: Tofacitinib should not be used concurrently with azathioprine, other biologic DMARDs, or cyclosporine.(1) Patient should be monitored for decreases in lymphocytes and neutrophils. Therapy should be adjusted based on the indication. - For all indications: If absolute neutrophil count (ANC) or lymphocyte count is less than 500 cells/mm3, discontinue tofacitinib. - For rheumatoid arthritis or psoriatic arthritis and absolute neutrophil count (ANC) 500 to 1000 cells/mm3: interrupt dosing. When ANC is greater than 1000 cells/mm3, resume Xeljanz 5 mg twice daily or Xeljanz XR 11 mg once daily. - For ulcerative colitis and ANC 500 to 1000 cells/mm3: -If taking Xeljanz 10 mg twice daily, decrease to 5 mg twice daily. When ANC is greater than 1000 cells/mm3, increase to 10 mg twice daily based on clinical response. -If taking Xeljanz 5 mg twice daily, interrupt dosing. When ANC is greater than 1000 cells/mm3, resume 5 mg twice daily. -If taking Xeljanz XR 22 mg once daily, decrease to 11 mg once daily. When ANC is greater than 1000 cells/mm3, increase to 22 mg once daily based on clinical response. -If taking Xeljanz XR 11 mg once daily, interrupt dosing. When ANC is greater than 1000 cells/mm3, resume 11 mg once daily. - For polyarticular course juvenile idiopathic arthritis (pcJIA) and ANC 500 to 1000 cells/mm3: interrupt dosing until ANC is greater than 1000 cells/mm3.(1)
DISCUSSION: Concurrent use of tofacitinib and azathioprine, other biologic DMARDs, or potent immunosuppressants may increase the risk of infection.(1) Serious infections due to bacterial, mycobacterial, invasive fungal, viral, or other opportunistic pathogens have been reported in patients receiving tofacitinib. Some patients presented with disseminated disease and were often taking concomitant immunomodulating agents. In the ulcerative colitis population, a greater risk of serious infections was seen with a higher tofacitinib dose. In 7 placebo-controlled rheumatoid arthritis trials (0-3 months exposure), the overall frequency of infections was 20% in the tofacitinib 5 mg twice daily group and 22% in the tofacitinib 10 mg twice daily group compared to 18% in the placebo group. Serious infections were reported in 11 patients (1.7 events per 100 patient-years) with a rate difference between treatment groups of 1.1 (-0.4, 2.5) events per 100 patient-years for both tofacitinib 5 mg twice daily and 10 mg twice daily. During 0-12 months exposure, serious infections were reported in 34 patients (2.7 events per 100 patient years) in the tofacitinib 5 mg twice daily group and 33 patients (2.7 events per 100 patient years) in the tofacitinib 10 mg twice daily group.(1)
Immunosuppressives; Immunomodulators/Upadacitinib
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Upadacitinib, immunosuppressives, and immunomodulators all suppress the immune system.
CLINICAL EFFECTS: Concurrent use of upadacitinib with immunosuppressives or immunomodulators may result in an increased risk of serious infections.
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of upadacitinib states that concurrent use of upadacitinib with immunosuppressives or immunomodulators is not recommended.
DISCUSSION: Serious infections have been reported in patients receiving upadacitinib. Reported infections included pneumonia, cellulitis, tuberculosis, multidermatomal herpes zoster, oral/esophageal candidiasis, cryptococcosis. Reports of viral reactivation, including herpes virus reactivation and hepatitis B reactivation, were reported in clinical studies with upadacitinib.(1)
Myelosuppressives; Immunomodulators/Sodium Iodide I 131
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Sodium iodide I 131 can cause depression of the hematopoetic system. Myelosuppressives and immunomodulators also suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of sodium iodide I 131 with agents that cause bone marrow depression, including myelosuppressives or immunomodulators, may result in an enhanced risk of hematologic disorders, including anemia, blood dyscrasias, bone marrow depression, leukopenia, and thrombocytopenia. Bone marrow depression may increase the risk of serious infections and bleeding.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of sodium iodide I 131 states that concurrent use with bone marrow depressants may enhance the depression of the hematopoetic system caused by large doses of sodium iodide I 131.(1) Sodium iodide I 131 causes a dose-dependent bone marrow suppression, including neutropenia or thrombocytopenia, in the 3 to 5 weeks following administration. Patients may be at increased risk of infections or bleeding during this time. Monitor complete blood counts within one month of therapy. If results indicate leukopenia or thrombocytopenia, dosimetry should be used to determine a safe sodium iodide I 131 activity.(1)
DISCUSSION: Hematologic disorders including death have been reported with sodium iodide I 131. The most common hematologic disorders reported include anemia, blood dyscrasias, bone marrow depression, leukopenia, and thrombocytopenia.(1)
Selected Immunosuppressants/Leflunomide; Teriflunomide
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of leflunomide or teriflunomide and potent immunosuppressants may result in additive or synergistic effects on the immune system.(1,2) Leflunomide is a prodrug and is converted to its active metabolite teriflunomide.(1)
CLINICAL EFFECTS: Concurrent use of leflunomide or teriflunomide with immunosuppressants may result in an increased risk of serious infections, including opportunistic infections, especially Pneumocystis jiroveci pneumonia, tuberculosis (including extra-pulmonary tuberculosis), and aspergillosis.
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: If leflunomide or teriflunomide is used concurrently with immunosuppressive agents, chronic CBC monitoring should be performed more frequently, every month instead of every 6 to 8 weeks. If bone marrow suppression or a serious infection occurs, leflunomide or teriflunomide should be stopped and rapid drug elimination procedure should be performed.(1,2)
DISCUSSION: Pancytopenia, agranulocytosis and thrombocytopenia have been reported in patients receiving leflunomide or teriflunomide alone, but most frequently in patients taking concurrent immunosuppressants.(1,2) Severe and potentially fatal infections, including sepsis, have been reported in patients receiving leflunomide or teriflunomide, especially Pneumocystis jiroveci pneumonia and aspergillosis. Tuberculosis has also been reported.(1,2)
Selected Myelosuppressive Agents/Clozapine
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Clozapine and other myelosuppressive agents may be associated with neutropenia or agranulocytosis.(2)
CLINICAL EFFECTS: Moderate neutropenia, even if due to combination therapy, may require abrupt discontinuation of clozapine resulting in decompensation of the patient's psychiatric disorder (e.g. schizophrenia). The disease treated by the myelosuppressive agent may be compromised if myelosuppression requires dose reduction, delay, or discontinuation of the myelosuppressive agent. Undetected severe neutropenia or agranulocytosis may be fatal.
PREDISPOSING FACTORS: Low white blood counts prior to initiation of the myelosuppressive agent may increase risk for clinically significant neutropenia.
PATIENT MANAGEMENT: If a patient stabilized on clozapine therapy requires treatment with a myelosuppressive agent, the clozapine prescriber should consult with prescriber of the myelosuppressive agent (e.g. oncologist) to discuss treatment and monitoring options.(2) More frequent absolute neutrophil count (ANC) monitoring or treatment alternatives secondary to neutropenic episodes may need to be considered. The U.S. Food and Drug Administration (FDA) recommends that prescribers monitor patients' ANC according to the monitoring frequencies described in the prescribing information. Severe neutropenia remains a serious, potentially fatal risk that is greatest in the first several months of clozapine treatment. ANC monitoring can help identify neutropenia early to allow for timely intervention.(1-2) Australia, Canada, and U.K.: Clozapine is only available through a restricted distribution system which requires documentation of the ANC prior to dispensing. For most clozapine patients, clozapine treatment must be interrupted for a suspected clozapine-induced ANC < 1000 cells/microliter. For patients with benign ethnic neutropenia (BEN), treatment must be interrupted for suspected clozapine-induced neutropenia < 500 cells/microliter.(2)
DISCUSSION: Concurrent use of clozapine and selected myelosuppressive agents may require more frequent ANC monitoring or consideration of treatment alternatives secondary to neutropenic episodes. Agents linked to this interaction generally have > 5% risk for neutropenia and/or warnings describing risk for myelosuppression in manufacturer prescribing information.(3-26)
Selected Myelosuppressive Agents/Deferiprone
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of deferiprone with other drugs known to be associated with neutropenia or agranulocytosis may increase the frequency or risk for severe toxicity.(1)
CLINICAL EFFECTS: Concurrent use of deferiprone and myelosuppressive agents may result in severe neutropenia or agranulocytosis, which may be fatal.
PREDISPOSING FACTORS: Agranulocytosis may be less common in patients receiving deferiprone for thalassemia, and more common in patients treated for other systemic iron overload conditions (e.g. myelodysplastic syndromes, sickle cell disease).(2,3) Inadequate monitoring appears to increase the risk for severe outcomes. Manufacturer post market surveillance found that in all fatal cases of agranulocytosis reported between 1999 and 2005, data on weekly white blood count (WBC) monitoring was missing. In three fatal cases, deferiprone was continued for two to seven days after the detection of neutropenia or agranulocytosis.(2)
PATIENT MANAGEMENT: If possible, discontinue one of the drugs associated with risk for neutropenia or agranulocytosis. If alternative therapy is not available, documentation and adherence to the deferiprone monitoring protocol is essential. Baseline absolute neutrophil count (ANC) must be at least 1,500/uL prior to starting deferiprone. Monitor ANC weekly during therapy. If infection develops, interrupt deferiprone therapy and monitor ANC more frequently. If ANC is less than 1,500/uL but greater than 500/uL, discontinue deferiprone and any other drugs possibly associated with neutropenia. Initiate ANC and platelet counts daily until recovery (i.e. ANC at least 1,500/uL). If ANC is less than 500/uL, discontinue deferiprone, evaluate patient and hospitalize if appropriate. Do not resume deferiprone unless potential benefits outweigh potential risks.(1)
DISCUSSION: Drugs linked to this monograph have an FDA Boxed Warning for risk of neutropenia, agranulocytosis, or pancytopenia, or have > 5% risk for neutropenia and/or warnings describing risk for myelosuppression in manufacturer prescribing information.(1-25) In pooled clinical studies submitted to the FDA, 6.1% of deferiprone patients met criteria for neutropenia and 1.7% of patients developed agranulocytosis.(1) The time to onset of agranulocytosis was highly variable with a range of 65 days to 9.2 years (median, 161 days).(3)
Selected Myelosuppressive Agents/Dipyrone
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Concurrent use of dipyrone with other drugs known to be associated with neutropenia or agranulocytosis may increase the frequency or risk for severe toxicity.(1-29)
CLINICAL EFFECTS: Concurrent use of dipyrone with agents that cause bone marrow depression, including myelosuppressives, may result in an enhanced risk of hematologic disorders, including anemia, blood dyscrasias, bone marrow depression, leukopenia, and thrombocytopenia. Bone marrow depression may increase the risk of serious infections and bleeding. Undetected severe neutropenia or agranulocytosis may be fatal.(1-29)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: Concurrent use of dipyrone and myelosuppressive agents should be avoided. The European Medicines Agency states dipyrone is contraindicated in patients with a prior medical history of dipyrone-induced agranulocytosis (or from other pyrazolones/pyrazolidines), impaired bone marrow function or diseases of the hematopoietic system.(3) International labeling for dipyrone and methotrexate state that co-administration may increase the hematotoxicity of methotrexate, especially in elderly patients, and therefore should be avoided.(1-2) The European Medicines Agency advises if agranulocytosis is suspected with dipyrone, a complete blood count (including differential blood count) should be performed immediately, and treatment must be stopped while waiting for the results. If confirmed, treatment must not be reintroduced.(1-3)
DISCUSSION: A retrospective cohort study analyzed new users of dipyrone (n=444,972), non-steroidal anti-inflammatory drugs (n=3,814,367) which served as a reference cohort, and opioids-paracetamol (n=3,129,221) which was the negative control. During continuous treatment over a median of 37-40 days, 26 cases of hospitalized agranulocytosis occurred. With the assumption that agranulocytosis onset was 7 days prior to admission, the hazard ratio of agranulocytosis associated with dipyrone was 4.40 [0.90-21.57] compared to NSAIDs and 2.45 [0.68-8.83] compared to opioid-paracetamol. HR of neutropenia from dipyrone was 2.98 [1.57-5.65] compared to NSAIDs and not statistically significant compared to opioids-paracetamol. In a sensitivity analysis assuming that the onset of agranulocytosis was the date of hospitalization, the HR of dipyrone-induced agranulocytosis was 7.20 [95% confidence interval: 1.92-26.99] compared to NSAIDs and 3.31 [1.17-9.34] compared to opioids-paracetamol. Agranulocytosis was very rare but more than 4 times more common with dipyrone than other analgesics.(4) In a review of 1,448 reports of agranulocytosis attributed to dipyrone, patients with fatal outcomes were older and more often had also received methotrexate compared to those with non-fatal outcomes (odds ratio: 5.18; 95% confidence interval: 3.06-8.78).(5) Agents linked to this interaction generally have > 5% risk for neutropenia and/or warnings describing risk for myelosuppression in manufacturer prescribing information.(2,6-26)
Slt Immunosuppress; Immunomodulator/Ropeginterferon Alfa-2B
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Ropeginterferon alfa-2b and immunosuppressives both suppress the immune system.
CLINICAL EFFECTS: Concurrent use of ropeginterferon alfa-2b with immunosuppressives may result in an increased risk of serious infections.
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: Avoid concurrent use of myelosuppressive agents.(1-2) If concurrent use cannot be avoided, monitor for effects of excessive immunosuppression.
DISCUSSION: In clinical trials, 20% of patients experienced leukopenia. Interferon alfa products may cause fatal or life-threatening infections.(1-2)
Trastuzumab/Anthracyclines
SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction.
MECHANISM OF ACTION: Trastuzumab and anthracyclines are independently associated with a risk for cardiotoxicities such as heart failure and cardiomyopathy. Prescribing information for each agent includes an FDA Boxed Warning describing these risks. Concurrent or sequential use of an anthracycline and trastuzumab further increases the risk for cardiotoxicity.(1-8)
CLINICAL EFFECTS: Cardiotoxicity may manifest as asymptomatic or symptomatic left ventricular dysfunction (LVD), arrhythmias, hypertension, heart failure or cardiomyopathy.(1,2) Early signs of LVD are often asymptomatic; diagnosis may be delayed in the absence routine measurement of left ventricular ejection fraction (LVEF).(3) Cardiac dysfunction from this combination may be irreversible.
PREDISPOSING FACTORS: The elderly, patients with a history of prior anthracycline or mediastinal radiation therapy, with underlying cardiac disease, or with elevated cardiac biomarkers (e.g. troponin, BNP) during or after therapy appear to be at higher risk for cardiotoxicity.(1,3,8)
PATIENT MANAGEMENT: If possible, avoid anthracycline-based therapy for up to 7 months after stopping trastuzumab. (1,9) When both trastuzumab and an anthracycline are included in a chemotherapeutic regimen close monitoring is needed to minimize the risk for permanent heart damage. Monitoring recommendations from the manufacturer of trastuzumab(1): - Prior to treatment conduct thorough cardiac assessment, including history, physical examination, and determination of left ventricular ejection fraction (LVEF). - Measure LVEF every 3 months during trastuzumab therapy. - Withhold trastuzumab dose at least 4 weeks for reduction of LVEF >= 16% from pre-treatment values, or if LVEF is below institutional limits of normal and LVEF is reduced >= 10% from pre-treatment baseline values. Trastuzumab may be resumed if LVEF improves to above threshold hold parameters within 4 to 8 weeks and the absolute decrease from baseline is <= 15%. If a dose is held for left ventricular dysfunction repeat LVEF measurements at 4 week intervals. - Discontinue trastuzumab for persistent LVEF decline for > 8 weeks, or if dose has been held on more than 3 occasions for cardiomyopathy. - Repeat LVEF evaluation upon trastuzumab completion and then every 6 months for a minimum of 2 years after treatment. American Heart Association(AHA)/American College of Cardiology(ACC) and European Society of Medical Oncology(ESMO) treatment guidelines recommend use of ACE Inhibitors or ARBs and beta blockers in asymptomatic patients with reduced LVEF. Patients who develop overt heart failure should receive standard heart failure therapies.(3,4)
DISCUSSION: While treatment with both anthracyclines and trastuzumab may be optimal cancer treatment, there is growing awareness of an increased risk for heart failure or cardiomyopathy in this population. To decrease risk for symptomatic heart failure consider cardiology consultation, particularly in patients with predisposing risk factors, to assure appropriate assessment and preventative treatment. A retrospective study of oncology patients treated with an anthracycline and/or trastuzumab examined treatments provided for symptomatic or asymptomatic decreases in LVEF. All 88 patients received at least one pre and one post chemotherapy echocardiogram. Thirty-five patients (40%) had decreased LVEF after receiving chemotherapy; 26 patients were asymptomatic while 9 were symptomatic. All 9 symptomatic patients received recommended beta blocker therapy and 6 also received an ACEI or ARB. Only 9 of 26 asymptomatic patients received recommended beta blockers; 8 of 26 received recommended ACEI/ARB therapy. Based upon chart review, none of the asymptomatic patients had contraindications to either therapy. This treatment rate for decreased LVEF is significantly lower than the 98% background treatment compliance rate at this institution.(5) A large retrospective cohort study examined heart failure risk after anthracycline and /or trastuzumab therapy. The cohort included 12,500 women diagnosed with invasive breast cancer; 442 women received trastuzumab and an anthracycline. The cumulative incidence of heart failure or cardiomyopathy on the combination was 6.2 % at one year, increasing to 20.1 % at five years with a hazard ratio(HR) of 7.19 (CI = 5.00 to 10.35) for anthracycline plus trastuzumab compared with no chemotherapy.(6) A large epidemiologic study evaluated Medicare data to determine the risk for heart failure or cardiomyopathy in 45,537 older women (mean age 76.2 years) diagnosed with early stage breast cancer. Over a 3 year period the cumulative incidence of heart failure or cardiomyopathy in women who received no chemotherapy, an anthracycline, trastuzumab, or anthracycline and trastuzumab therapy was 18.1%, 20.2%, 32.1% and 41.9% respectively.(8)
Moderate Interaction: Assess the risk to the patient and take action as needed.
Biologic Therapies/Belimumab
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Concurrent use of belimumab with other biologic therapies may result in additive or synergistic effects on the immune system.(1)
CLINICAL EFFECTS: Concurrent use of belimumab with other biologic therapies may increase the risk of serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The concurrent use of belimumab with other biologic therapies should be approached with caution.(1)
DISCUSSION: In a randomized, double-blind, placebo-controlled trial, more patients who received belimumab and rituximab experienced serious adverse events, serious infections, and post-injection systemic reactions (22.2%, 9%, and 13.2%, respectively) than patients who received belimumab with placebo (13.9%, 2.8%, 9.7%) or standard therapy (19.7%, 5.3%, 5.3%).(1) The combination of belimumab with other biologic therapies has not been studied and should be used cautiously.(1)
Igg Antibodies And Derivatives/Rozanolixizumab-Noli
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: The neonatal Fc receptor (FcRn) prevents catabolism and mediates recycling of IgG and albumin, which leads to their long persistence in the body.(1,2) Rozanolixizumab-noli binds to FcRn and may decrease systemic exposure of other ligands of FcRn, like immunoglobulins and IgG-based antibodies.(3)
CLINICAL EFFECTS: The effectiveness of medications that bind to FcRn may be decreased.(3)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The manufacturer of rozanolixizumab-noli states that concurrent use with medications that bind to the human neonatal Fc receptor (FcRn) should be closely monitored for reduced effectiveness of these medications. If long-term use of such medications is essential for the patient, consider discontinuing rozanolixizumab-noli and use alternative therapies.(3)
DISCUSSION: Clinical drug interaction studies with rozanolixizumab-noli have not been performed. Rozanolixizumab-noli may decrease concentrations of compounds that bind to the human FcRn.(3)
Immunosuppressives; Immunomodulators/Cladribine Oncology Inj
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Cladribine in combination with immunosuppressives and immune-modulators all suppress the immune system.(1-4)
CLINICAL EFFECTS: Concurrent use of cladribine with immunosuppressive or immune-modulating agents may result in an increased risk of serious infections.(1-4)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: Recommendations for cladribine regarding this interaction differ between regulatory approving agencies. The cladribine US, UK, and Australian prescribing information state: -Caution should be exercised if cladribine injection is administered before, after, or in conjunction with other drugs known to cause immunosuppression or myelosuppression.(1-3) The cladribine Canadian prescribing information states: -Proceed carefully in patients with severe bone marrow impairment of any etiology since further suppression of bone marrow function should be anticipated.(4)
DISCUSSION: Severe bone marrow suppression, including neutropenia, anemia and thrombocytopenia, has been commonly observed in patients treated with cladribine injection, especially at high doses.(1-4)
Immunosuppressives; Immunomodulators/Covid-19 Vaccines
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Immunosuppressants and immunomodulators may prevent the immune system from properly responding to the COVID-19 vaccine.(1-3)
CLINICAL EFFECTS: Administration of a COVID-19 vaccine with immunosuppressants or immunomodulators may interfere with vaccine-induced immune response and impair the efficacy of the vaccine. However, patients should be offered and given a COVID-19 vaccine even if the use and timing of immunosuppressive agents cannot be adjusted.(1-3)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The Centers for Disease Control and Prevention (CDC),(1) Infectious Diseases Society of America (IDSA),(2) and the American College of Rheumatology (ACR)(3) have published guidances for COVID-19 vaccination in patients on immunosuppressants. The CDC states that all immunocompromised patients over 6 months of age should receive at least 1 dose of COVID-19 vaccine if eligible. See the CDC's Interim Clinical Considerations for Use of COVID-19 Vaccines for specific recommendations based on age, vaccination history, and vaccine manufacturer.(1) The CDC advises planning for vaccination at least 2 weeks before starting or resuming immunosuppressive therapy.(1) IDSA recommends timing COVID-19 vaccination at least 2 weeks before starting or at least 3 months after completing immunosuppressive therapy.(2) The ACR states that in general, immunosuppressants and immunomodulators should be held for 1-2 weeks after each vaccine dose.(3) Patients should be offered and given a COVID-19 vaccine even if the use and timing of immunosuppressive agents cannot be adjusted, though the immune response will likely be blunted. COVID-19 vaccines should not be delayed in patients taking immunosuppressive therapies.(1-2) See below for specific recommendations for certain agents. B-cell depleting agents, including rituximab: The CDC states that the utility of B-cell quantification to guide clinical care is not known and is not recommended. Patients who receive B-cell depleting therapy on a continuing basis should receive COVID-19 vaccines about 4 weeks before the next scheduled dose. For patients who received 1 or more doses of COVID-19 vaccine during treatment with B-cell-depleting therapies that were administered over a limited period (e.g., as part of a treatment regimen for certain malignancies), revaccination may be considered according to the current CDC recommendations for unvaccinated patients. The suggested interval to start revaccination is about 6 months after completion of the B-cell-depleting therapy.(1) IDSA recommends waiting for at least 3-6 months after the last infusion of B-cell depleting therapy before administering COVID-19 vaccines.(2) The ACR recommends consulting with the rheumatologist to determine optimal timing of COVID-19 vaccination. Measuring CD19 B cells may be considered to determine need for a booster vaccine dose. If B cell levels are not measured, a supplemental vaccine dose 2-4 weeks before the next scheduled dose of rituximab is recommended.(3) Recipients of hematopoietic cell transplant or CAR-T-cell therapy who received one or more doses of COVID-19 vaccine prior to or during treatment should undergo revaccination following the current CDC recommendations for unvaccinated patients. Revaccination should start at least 3 months (12 weeks) after transplant or CAR-T-cell therapy.(1,2) The CDC includes abatacept, cyclophosphamide, and TNF-alpha and cytokine inhibitors in their general recommendation to hold therapy for at least 2 weeks following vaccination (1) while the ACR provides different recommendations:(3) *Abatacept: - Subcutaneous abatacept should be withheld for 1-2 weeks after each vaccine dose, as disease activity allows. - For intravenous abatacept, time administration so that vaccination will occur 1 week before the next abatacept infusion. *Cyclophosphamide: When feasible, administer cyclophosphamide 1 week after each COVID-19 vaccine dose. *TNF-alpha inhibitors and cytokine inhibitors: The ACR was not able to reach consensus on whether to modify dosing or timing of these agents with COVID-19 vaccination.
DISCUSSION: IDSA recommendations are based on cohort and case control studies in immunocompromised patients that found low to modest vaccine effectiveness (37-61%) but lower risks of COVID-19 association hospitalization, COVID-19 related mortality, and critical illness.(2) The ACR convened a COVID-19 Vaccine Guidance Task Force to provide guidance on optimal use of COVID-19 vaccines in rheumatology patients. These recommendations are based on limited clinical evidence of COVID-19 vaccines in patients without rheumatic and musculoskeletal disorders and evidence of other vaccines in this patient population.(3) The ACR recommendation for rituximab is based on studies of humoral immunity following receipt of other vaccines. These studies have uncertain generalizability to vaccination against COVID-19, as it is unknown if efficacy is attributable to induction of host T cells versus B cell (antibody-based) immunity.(3) The ACR recommendation for mycophenolate is based on preexisting data of mycophenolate on non-COVID-19 vaccine immunogenicity. Emerging data suggests that mycophenolate may impair SARS-CoV-2 vaccine response in rheumatic and musculoskeletal disease and transplant patients.(3) The ACR recommendation for methotrexate is based on data from influenza vaccines and pneumococcal vaccines with methotrexate.(3) The ACR recommendation for JAK inhibitors is based on concerns related to the effects of JAK inhibitors on interferon signaling that may result in a diminished vaccine response.(3) The ACR recommendation for subcutaneous abatacept is based on several studies suggesting a negative effect of abatacept on vaccine immunogenicity. The first vaccine dose primes naive T cells, naive T cell priming is inhibited by CTLA-4, and abatacept is a CTLA-4Ig construct. CTLA-4 should not inhibit boosts of already primed T cells at the time of the second vaccine dose.(3)
Immunosuppressives; Immunomodulators/Sarilumab
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Sarilumab, immunosuppressives, and immunomodulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of sarilumab with immunosuppressive or immunomodulating agents may result in an increased risk for serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of sarilumab recommends caution because the concurrent use of sarilumab with immunosuppressive agents may increase the risk of infection. If concurrent therapy is warranted, consider the risk of additive immune suppression and monitor based on prescribing information for both agents.(1)
DISCUSSION: Sarilumab was studied as monotherapy and in combination with methotrexate or conventional disease modifying antirheumatic drugs (DMARDs) in rheumatoid arthritis studies. Sarilumab has not been studied with biological DMARDs and concurrent use should be avoided. If concurrent therapy is warranted, consider the potential for increased immunosuppressive risks from both agents.(1) The most common infections reported by sarilumab treated patients in the clinical trial periods included pneumonia and cellulitis. Serious bacterial, mycobacterial, fungal, and viral infections were observed in patients receiving sarilumab. Cases of tuberculosis, candidiasis, and pneumocystis with sarilumab have been reported.(1)
Immunosuppressives; Immunomodulators/Tocilizumab
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Tocilizumab, immunosuppressives, and immunomodulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of tocilizumab with immunosuppressive or immunomodulating agents may result in an increased risk for serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of tocilizumab recommends caution because the concurrent use of tocilizumab with immunosuppressive agents may increase the risk of infection. If concurrent therapy is warranted, consider the risk of additive immune suppression and monitor based on prescribing information for both agents.(1)
DISCUSSION: Tocilizumab was studied as monotherapy and in combination with methotrexate, non-biologic DMARDs or corticosteroids, depending on the indication. Tocilizumab has not been studied with biological DMARDs and concurrent use should be avoided. If concurrent therapy is warranted, consider the potential for increased immunosuppressive risks from both agents.(1) The most common infections reported by tocilizumab treated patients in the clinical trial periods included pneumonia, urinary tract infection, cellulitis, herpes zoster, gastroenteritis, diverticulitis, sepsis and bacterial arthritis. Serious bacterial, mycobacterial, fungal, and viral infections were observed in patients receiving tocilizumab. Cases of tuberculosis, cryptococcus, aspergillosis, candidiasis, and pneumocystosis have been reported.(1)
Immunosuppressives; Immunomodulators/Ublituximab
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Ublituximab, immunosuppressives, and immunomodulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of ublituximab with immunosuppressive or immunomodulating agents may result in an increased risk for serious infections.(1)
PREDISPOSING FACTORS: Incomplete washout of previously prescribed immunosuppressive or immune-modulating medications.
PATIENT MANAGEMENT: The US manufacturer of ublituximab recommends caution because the concurrent use of ublituximab with immunomodulating or immunosuppressive agents, including immunosuppressant doses of corticosteroids, may increase the risk of infection.(1) If concurrent therapy is warranted, consider the risk of additive immune suppression and monitor based on prescribing information for both agents. When switching from agents with immune effects, the half-life and mechanism of action of these drugs must be taken into consideration in order to prevent additive immunosuppressive effects.(1)
DISCUSSION: The most common infections reported by ublituximab-treated patients in the clinical trial periods included upper respiratory tract infections and urinary tract infections. Serious, including life-threatening or fatal, bacterial and viral infections were observed in patients receiving ublituximab.(1) Serious and/or fatal bacterial, fungal, and new or reactivated viral infections have been associated with other anti-CD20 B-cell depleting therapies. There were no cases of progressive multifocal leukoencephalopathy (PML) reported during the clinical trials; however, there have been reports of PML during or following completion of other anti-CD20 B-cell depleting therapies.(1)
Immunosuppressives; Immunomodulators/Ustekinumab
SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed.
MECHANISM OF ACTION: Ustekinumab, immunosuppressives, and immunomodulators all suppress the immune system.(1)
CLINICAL EFFECTS: Concurrent use of ustekinumab with immunosuppressive or immunomodulating agents may result in an increased risk for serious infections.(1)
PREDISPOSING FACTORS: None determined.
PATIENT MANAGEMENT: The US manufacturer of ustekinumab recommends caution because the concurrent use of ustekinumab with immunosuppressive agents may increase the risk of infection. If concurrent therapy is warranted, consider the risk of additive immune suppression and monitor based on prescribing information for both agents.(1)
DISCUSSION: Ustekinumab has not been studied in combination with other immunosuppressants in psoriasis studies. In psoriatic arthritis studies, concomitant methotrexate use did not appear to influence the safety or efficacy of ustekinumab. In Crohn's disease and ulcerative colitis studies, concomitant use of immunosuppressants or corticosteroids did not appear to influence the safety or efficacy of ustekinumab. If concurrent therapy is warranted, consider the potential for increased immunosuppressive risks from both agents.(1) The most common infections reported by ustekinumab treated patients in the clinical trial periods included nasopharyngitis(8%) and upper respiratory tract infection(5%). Serious bacterial, mycobacterial, fungal, and viral infections were observed in patients receiving ustekinumab. Cases of interstitial pneumonia, eosinophilic pneumonia, and cryptogenic organizing pneumonia resulting in respiratory failure or prolonged hospitalization have been reported in patients receiving ustekinumab.(1)
Contraindications
*Known hypersensitivity to pertuzumab, trastuzumab, or hyaluronidase-zzxf, or any ingredient in the formulation.
There are no contraindication contraindications for this drug.
- Cardiomyopathy
- Heart failure
- Interstitial pneumonitis
- Left ventricular failure
- Pregnancy
- Pulmonary disease
- Neutropenic disorder
Adverse reactions
The most common adverse effects occurring in >30% of patients receiving pertuzumab/trastuzumab/hyaluronidase-zzxf for neoadjuvant and adjuvant treatment of breast cancer include alopecia, nausea, diarrhea, anemia, and asthenia.
The most common adverse effects (based on IV pertuzumab) occurring in >30% of patients receiving IV pertuzumab in combination with trastuzumab and docetaxel for treatment of metastatic breast cancer include diarrhea, alopecia, neutropenia, nausea, fatigue, rash, and peripheral neuropathy.
More Frequent
- Anemia
- Anemia
- Dyspnea
- Dyspnea
- Hypersensitivity drug reaction
- Injection site sequelae
- Neutropenic disorder
- Neutropenic disorder
- Thrombocytopenic disorder
- Thrombocytopenic disorder
Less Frequent
- Cardiomyopathy
- Chronic heart failure
- Heart failure
- Herpes simplex infection
- Hypersensitivity drug reaction
- Influenza
- Left ventricular failure
- Leukopenia
- Palmar-plantar erythrodysesthesia
Rare or Very Rare
- Acute respiratory distress syndrome
- Anaphylaxis
- Anaphylaxis
- Angioedema
- Cardiac arrhythmia
- Chronic heart failure
- Glomerulonephritis
- Hypoxia
- Interstitial pneumonitis
- Kidney disease with reduction in glomerular filtration rate (GFr)
- Left ventricular failure
- Leukopenia
- Pleural effusions
- Pulmonary edema
- Pulmonary fibrosis
- Pulmonary infiltrates
- Tumor lysis syndrome
- Tumor lysis syndrome
More Frequent
- Alopecia
- Alopecia
- Anorexia
- Arthralgia
- Chills
- Cough
- Diarrhea
- Diarrhea
- Dizziness
- Dizziness
- Dry skin
- Dysgeusia
- Dysgeusia
- Dyspepsia
- Edema
- Eye tearing
- Fatigue
- Fatigue
- Fever
- Fever
- Flushing
- General weakness
- Headache disorder
- Headache disorder
- Infection
- Injection site sequelae
- Insomnia
- Insomnia
- Myalgia
- Nail disorders
- Nausea
- Nausea
- Pain
- Peripheral edema
- Peripheral neuropathy
- Pharyngitis
- Pharyngitis
- Pruritus of skin
- Skin rash
- Skin rash
- Stomatitis
- Stomatitis
- Upper respiratory infection
- Upper respiratory infection
- Vomiting
- Vomiting
Less Frequent
- Acne vulgaris
- Acute abdominal pain
- Anorexia
- Arthralgia
- Back pain
- Bone pain
- Bronchitis
- Chills
- Constipation
- Constipation
- Dyschromia
- Dyspepsia
- Epistaxis
- Erythema
- Flushing
- General weakness
- Granulocytopenic disorder
- Mouth irritation
- Myalgia
- Nail disorders
- Palpitations
- Paresthesia
- Paronychia
- Peripheral neuritis
- Peripheral neuropathy
- Rhinitis
- Tachycardia
- Urinary tract infection
Rare or Very Rare
- Autoimmune thrombocytopenia
- Hypertension
- Pruritus of skin
Precautions
No enhanced messaging available.
Safety and efficacy of pertuzumab/trastuzumab/hyaluronidase-zzxf have not been established in pediatric patients.
Pertuzumab/trastuzumab/hyaluronidase-zzxf may cause fetal harm. (See Fetal/Neonatal Morbidity and Mortality under Cautions.) In postmarketing reports, use of IV trastuzumab during pregnancy resulted in cases of oligohydramnios and oligohydramnios sequence manifesting as pulmonary hypoplasia, skeletal abnormalities, and neonatal death.
If pertuzumab is used during pregnancy or if the patient becomes pregnant while receiving the drug or within 7 months after discontinuance of therapy, the patient should be apprised of the potential fetal hazard; the patient and clinician should immediately notify Genentech (1-888-835-2555).
It is not known whether pertuzumab/trastuzumab/hyaluronidase-zzxf is distributed into milk, or if the drug has any effect on milk production or the nursing infant. Human immunoglobulin G (IgG) is distributed into human milk, but is not found in neonatal or infant circulation in substantial amounts. Trastuzumab is distributed into milk in monkeys; however, no adverse effects on neonatal development were associated with this exposure.
Consider the benefits of breast-feeding and the importance of pertuzumab/trastuzumab/hyaluronidase-zzxf to the woman as well as potential adverse effects on the breast-fed infant from the drug or underlying maternal condition. This consideration should also take into account the elimination half-life of pertuzumab and the trastuzumab wash out period of 7 months.
The manufacturer makes no specific dosage recommendations for geriatric patients.
In the FeDeriCa study, 11% of patients were >=65 years of age, and 1.6% were >=75 years of age. The manufacturer states that clinical studies of pertuzumab/trastuzumab/hyaluronidase-zzxf did not include sufficient numbers of patients >=65 years of age to determine whether geriatric patients respond differently than younger patients. In a population pharmacokinetic analysis, no substantial differences in pharmacokinetics were observed between geriatric and younger adults.
In studies with IV trastuzumab, the risk of cardiac function was increased in geriatric patients compared with younger patients receiving treatment for adjuvant therapy or metastatic disease. In clinical trials of IV pertuzumab in combination with trastuzumab, the risk of decreased appetite, anemia, decreased weight, asthenia, dysgeusia, peripheral neuropathy, and hypomagnesemia was increased in geriatric patients compared with younger patients.
ICD codes
| Code | Type | Description |
|---|---|---|
| HEr2-positive carcinoma of breast | ||
| C50 | ICD10CM | Malignant neoplasm of breast |
| C50.1 | ICD10CM | Malignant neoplasm of central portion of breast |
| C50.11 | ICD10CM | Malignant neoplasm of central portion of breast, female |
| C50.111 | ICD10CM | Malignant neoplasm of central portion of right female breast |
| C50.112 | ICD10CM | Malignant neoplasm of central portion of left female breast |
| C50.119 | ICD10CM | Malignant neoplasm of central portion of unspecified female breast |
| C50.12 | ICD10CM | Malignant neoplasm of central portion of breast, male |
| C50.121 | ICD10CM | Malignant neoplasm of central portion of right male breast |
| C50.122 | ICD10CM | Malignant neoplasm of central portion of left male breast |
| C50.129 | ICD10CM | Malignant neoplasm of central portion of unspecified male breast |
| C50.2 | ICD10CM | Malignant neoplasm of upper-inner quadrant of breast |
| C50.21 | ICD10CM | Malignant neoplasm of upper-inner quadrant of breast, female |
| C50.211 | ICD10CM | Malignant neoplasm of upper-inner quadrant of right female breast |
| C50.212 | ICD10CM | Malignant neoplasm of upper-inner quadrant of left female breast |
| C50.219 | ICD10CM | Malignant neoplasm of upper-inner quadrant of unspecified female breast |
| C50.22 | ICD10CM | Malignant neoplasm of upper-inner quadrant of breast, male |
| C50.221 | ICD10CM | Malignant neoplasm of upper-inner quadrant of right male breast |
| C50.222 | ICD10CM | Malignant neoplasm of upper-inner quadrant of left male breast |
| C50.229 | ICD10CM | Malignant neoplasm of upper-inner quadrant of unspecified male breast |
| C50.3 | ICD10CM | Malignant neoplasm of lower-inner quadrant of breast |
| C50.31 | ICD10CM | Malignant neoplasm of lower-inner quadrant of breast, female |
| C50.311 | ICD10CM | Malignant neoplasm of lower-inner quadrant of right female breast |
| C50.312 | ICD10CM | Malignant neoplasm of lower-inner quadrant of left female breast |
| C50.319 | ICD10CM | Malignant neoplasm of lower-inner quadrant of unspecified female breast |
| C50.32 | ICD10CM | Malignant neoplasm of lower-inner quadrant of breast, male |
| C50.321 | ICD10CM | Malignant neoplasm of lower-inner quadrant of right male breast |
| C50.322 | ICD10CM | Malignant neoplasm of lower-inner quadrant of left male breast |
| C50.329 | ICD10CM | Malignant neoplasm of lower-inner quadrant of unspecified male breast |
| C50.4 | ICD10CM | Malignant neoplasm of upper-outer quadrant of breast |
| C50.41 | ICD10CM | Malignant neoplasm of upper-outer quadrant of breast, female |
| C50.411 | ICD10CM | Malignant neoplasm of upper-outer quadrant of right female breast |
| C50.412 | ICD10CM | Malignant neoplasm of upper-outer quadrant of left female breast |
| C50.419 | ICD10CM | Malignant neoplasm of upper-outer quadrant of unspecified female breast |
| C50.42 | ICD10CM | Malignant neoplasm of upper-outer quadrant of breast, male |
| C50.421 | ICD10CM | Malignant neoplasm of upper-outer quadrant of right male breast |
| C50.422 | ICD10CM | Malignant neoplasm of upper-outer quadrant of left male breast |
| C50.429 | ICD10CM | Malignant neoplasm of upper-outer quadrant of unspecified male breast |
| C50.5 | ICD10CM | Malignant neoplasm of lower-outer quadrant of breast |
| C50.51 | ICD10CM | Malignant neoplasm of lower-outer quadrant of breast, female |
| C50.511 | ICD10CM | Malignant neoplasm of lower-outer quadrant of right female breast |
| C50.512 | ICD10CM | Malignant neoplasm of lower-outer quadrant of left female breast |
| C50.519 | ICD10CM | Malignant neoplasm of lower-outer quadrant of unspecified female breast |
| C50.52 | ICD10CM | Malignant neoplasm of lower-outer quadrant of breast, male |
| C50.521 | ICD10CM | Malignant neoplasm of lower-outer quadrant of right male breast |
| C50.522 | ICD10CM | Malignant neoplasm of lower-outer quadrant of left male breast |
| C50.529 | ICD10CM | Malignant neoplasm of lower-outer quadrant of unspecified male breast |
| C50.6 | ICD10CM | Malignant neoplasm of axillary tail of breast |
| C50.61 | ICD10CM | Malignant neoplasm of axillary tail of breast, female |
| C50.611 | ICD10CM | Malignant neoplasm of axillary tail of right female breast |
| C50.612 | ICD10CM | Malignant neoplasm of axillary tail of left female breast |
| C50.619 | ICD10CM | Malignant neoplasm of axillary tail of unspecified female breast |
| C50.62 | ICD10CM | Malignant neoplasm of axillary tail of breast, male |
| C50.621 | ICD10CM | Malignant neoplasm of axillary tail of right male breast |
| C50.622 | ICD10CM | Malignant neoplasm of axillary tail of left male breast |
| C50.629 | ICD10CM | Malignant neoplasm of axillary tail of unspecified male breast |
| C50.8 | ICD10CM | Malignant neoplasm of overlapping sites of breast |
| C50.81 | ICD10CM | Malignant neoplasm of overlapping sites of breast, female |
| C50.811 | ICD10CM | Malignant neoplasm of overlapping sites of right female breast |
| C50.812 | ICD10CM | Malignant neoplasm of overlapping sites of left female breast |
| C50.819 | ICD10CM | Malignant neoplasm of overlapping sites of unspecified female breast |
| C50.82 | ICD10CM | Malignant neoplasm of overlapping sites of breast, male |
| C50.821 | ICD10CM | Malignant neoplasm of overlapping sites of right male breast |
| C50.822 | ICD10CM | Malignant neoplasm of overlapping sites of left male breast |
| C50.829 | ICD10CM | Malignant neoplasm of overlapping sites of unspecified male breast |
| C50.9 | ICD10CM | Malignant neoplasm of breast of unspecified site |
| C50.91 | ICD10CM | Malignant neoplasm of breast of unspecified site, female |
| C50.911 | ICD10CM | Malignant neoplasm of unspecified site of right female breast |
| C50.912 | ICD10CM | Malignant neoplasm of unspecified site of left female breast |
| C50.919 | ICD10CM | Malignant neoplasm of unspecified site of unspecified female breast |
| C50.92 | ICD10CM | Malignant neoplasm of breast of unspecified site, male |
| C50.921 | ICD10CM | Malignant neoplasm of unspecified site of right male breast |
| C50.922 | ICD10CM | Malignant neoplasm of unspecified site of left male breast |
| C50.929 | ICD10CM | Malignant neoplasm of unspecified site of unspecified male breast |
ICD code information from First Databank (FDB).
Formulary status
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Last reviewed · Source: First Databank (FDB) drug data
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