Omlyclo (omalizumab-igec)

Monoclonal Antibodies To Immunoglobulin E (IgE) Subcutaneous Syringe (Ml)

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Omalizumab, a chimeric human-murine (humanized) anti-IgE monoclonal antibody, is an antiasthmatic and antiallergic agent.

Omalizumab is a recombinant DNA-derived humanized anti-IgE monoclonal antibody. The drug is prepared from cultures of genetically altered mouse myeloma cells in which most of the mouse-derived portions have been replaced with human-derived portions to reduce antigenicity. The resultant humanized antibody is expressed in cultures of Chinese hamster ovary cells.

Its composite sequences of proteins are 95% human and 5% murine, with the murine portion effectively hidden after binding to IgE and therefore unlikely to elicit an immunogenic response. Omalizumab binds specifically to circulating IgE and blocks its binding with the high-affinity IgE receptor (FcepsilonRI) on the surface of mast cells, basophils, and dendritic cells; inhibition of such binding interferes with the synthesis and release of mediators of the allergic response (e.g., leukotrienes, cytokines, chemokines). In patients with allergic asthma, treatment with omalizumab inhibits IgE-mediated inflammation, as evidenced by reduced blood and tissue eosinophils and reduced inflammatory mediators, including IL-4, IL-5, and IL-13.

Omalizumab markedly attenuates the early- and late-phase inflammatory response, the increase in airway hyperresponsiveness, and the influx of eosinophils into the airways following inhaled allergen challenge. Down-regulation of FcepsilonRIs on the surface of mast cells and basophils as a result of the drug binding to IgE and decreasing circulating IgE may be involved in the drug's effects in chronic spontaneous urticaria. The mechanism of omalizumab's effects on the symptoms of chronic spontaneous urticaria has not been fully elucidated.

In clinical studies in patients with asthma and aeroallergen skin-test reactivity, mean serum concentrations of free (unbound) IgE reportedly were reduced by more than 96% in patients receiving omalizumab at recommended dosages; however, total serum IgE concentrations in omalizumab-treated patients are elevated because omalizumab-IgE complexes are eliminated more slowly than free IgE.

Similarly, a dose-dependent reduction in serum concentrations of free IgE (and an increase in total serum IgE concentrations) was observed in clinical studies of omalizumab in patients with chronic spontaneous urticaria. Maximum suppression of free IgE concentrations was observed 3 days following the first dose. Increase of free IgE concentrations and decrease of total IgE concentrations toward pretreatment values occurred over a 16-week follow-up period following discontinuance of omalizumab.

Omalizumab is absorbed slowly with peak serum concentrations attained after an average of 7-8 days; absolute bioavailability averages 62%. Omalizumab is degraded by the reticuloendothelial system and endothelial cells in the liver; it is eliminated in part into the bile as unchanged drug. The half-life is 26 days in asthmatic patients and 24 days in patients with chronic spontaneous urticaria.

USES: Omalizumab is used to control and prevent symptoms (such as wheezing and shortness of breath) caused by asthma that is due to year-round allergens. Controlling symptoms of asthma helps you maintain your normal activities and cuts down on time lost from work or school. Omalizumab may also be used to treat certain growths in the nose (chronic rhinosinusitis with nasal polyps) or to treat hives from an unknown cause (chronic spontaneous urticaria-CSU).

Omalizumab is also used in people with a certain type of food allergy (IgE-mediated food allergy) while continuing to avoid food allergens. It may help lower the risk of having serious allergic reactions. This medication must be used regularly to be effective.

It does not work right away and should not be used as an emergency treatment for serious allergic reactions or to relieve sudden asthma attacks. If an asthma attack occurs, use your quick-relief inhaler (such as albuterol, salbutamol) as prescribed. This monograph is about the following omalizumab products: omalizumab and omalizumab-igec.

Generic name: omalizumab-igec
Pronunciation: (OH-ma-LIZ-ue-mab)
Drug class: Monoclonal Antibodies To Immunoglobulin E (IgE)
Therapeutic class: Respiratory Therapy Agents

Reference product & biosimilars

NameBiosimilarInterchangeable
Xolair Reference
Genentech
Xolair Reference
Genentech
Celltrion Usa, Biosimilar Interchangeable

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Indications

The following indications are listed for Omlyclo:

  • Chronic Idiopathic Urticaria
  • Chronic Rhinosinusitis With Nasal Polyposis
  • Ige-Mediated Food Allergy
  • Moderate Persistent Asthma
  • Severe Persistent Asthma

Also known as: Anaphylactic Food Allergy.

Dosing

In patients with asthma, chronic rhinosinusitis with nasal polyps (CRSwNP), and IgE-mediated food allergy, dosage should be based on the primary diagnosis for which omalizumab is prescribed. Initial dosing in patients with these conditions is determined based on serum total IgE levels and body weight. Dosage of omalizumab in patients with chronic spontaneous urticaria (CSU) is not dependent on serum IgE level or body weight.

Drug interactions

No formal drug interactions have been conducted with omalizumab.

Contraindications

*Known history of severe hypersensitivity to omalizumab or any ingredient in the formulation.

Adverse reactions

Adverse effects reported in >=1% of adults and adolescents >=12 years of age with asthma receiving omalizumab in clinical studies include arthralgia, general pain, leg pain, fatigue, dizziness, fracture, arm pain, pruritus, dermatitis, and earache.

Adverse effects reported in >=3% of pediatric patients 6 to <12 years of age with asthma receiving omalizumab in clinical studies include nasopharyngitis, headache, pyrexia, upper abdominal pain, pharyngitis streptococcal, otitis media, viral gastroenteritis, arthropod bites, and epistaxis.

The most common adverse reactions (>=3%) reported in patients with chronic rhinosinusitis with nasal polyposis (CRSwNP) receiving omalizumab in clinical studies include headache, injection site reaction, arthralgia, upper abdominal pain, and dizziness.

The most common adverse reactions (>=3%) reported in patients with IgE-mediated food allergy receiving omalizumab in clinical studies were injection site reactions and pyrexia.

Adverse effects (>=2%) reported in patients with chronic spontaneous urticaria receiving omalizumab in controlled clinical studies include nausea, nasopharyngitis, sinusitis, upper respiratory tract infection, viral upper respiratory tract infection, arthralgia, headache, and cough.

Precautions

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ICD codes

CodeTypeDescription
Chronic idiopathic urticaria
L50.1ICD10CMIdiopathic urticaria
Chronic rhinosinusitis with nasal polyposis
J32ICD10CMChronic sinusitis
J32.8ICD10CMOther chronic sinusitis
J32.9ICD10CMChronic sinusitis, unspecified
J33ICD10CMNasal polyp
J33.0ICD10CMPolyp of nasal cavity
J33.1ICD10CMPolypoid sinus degeneration
J33.8ICD10CMOther polyp of sinus
J33.9ICD10CMNasal polyp, unspecified
Ige-mediated food allergy
T78.00xAICD10CMAnaphylactic reaction due to unspecified food, initial encounter
T78.00xDICD10CMAnaphylactic reaction due to unspecified food, subsequent encounter
T78.070ICD10CMAnaphylactic reaction due to milk and dairy products with tolerance to baked milk
T78.070AICD10CMAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, initial encounter
T78.070DICD10CMAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, subsequent encounter
T78.070SICD10CMAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, sequela
T78.071ICD10CMAnaphylactic reaction due to milk and dairy products with reactivity to baked milk
T78.071AICD10CMAnaphylactic reaction due to milk and dairy products with reactivity to baked milk, initial encounter
T78.071DICD10CMAnaphylactic reaction due to milk and dairy products with reactivity to baked milk, subsequent encounter
T78.071SICD10CMAnaphylactic reaction due to milk and dairy products with reactivity to baked milk, sequela
T78.079ICD10CMAnaphylactic reaction due to milk and dairy products, unspecified
T78.079AICD10CMAnaphylactic reaction due to milk and dairy products, unspecified, initial encounter
T78.079DICD10CMAnaphylactic reaction due to milk and dairy products, unspecified, subsequent encounter
T78.079SICD10CMAnaphylactic reaction due to milk and dairy products, unspecified, sequela
T78.080ICD10CMAnaphylactic reaction due to egg with tolerance to baked egg
T78.080AICD10CMAnaphylactic reaction due to egg with tolerance to baked egg, initial encounter
T78.080DICD10CMAnaphylactic reaction due to egg with tolerance to baked egg, subsequent encounter
T78.080SICD10CMAnaphylactic reaction due to egg with tolerance to baked egg, sequela
T78.081ICD10CMAnaphylactic reaction due to egg with reactivity to baked egg
T78.081AICD10CMAnaphylactic reaction due to egg with reactivity to baked egg, initial encounter
T78.081DICD10CMAnaphylactic reaction due to egg with reactivity to baked egg, subsequent encounter
T78.081SICD10CMAnaphylactic reaction due to egg with reactivity to baked egg, sequela
T78.089ICD10CMAnaphylactic reaction due to eggs, unspecified
T78.089AICD10CMAnaphylactic reaction due to eggs, unspecified, initial encounter
T78.089DICD10CMAnaphylactic reaction due to eggs, unspecified, subsequent encounter
T78.089SICD10CMAnaphylactic reaction due to eggs, unspecified, sequela
T78.11ICD10CMOther adverse food reactions due to milk and dairy products
T78.110ICD10CMOther adverse food reactions due to milk and dairy products with tolerance to baked milk
T78.110AICD10CMOther adverse food reactions due to milk and dairy products with tolerance to baked milk, initial encounter
T78.110DICD10CMOther adverse food reactions due to milk and dairy products with tolerance to baked milk, subsequent encounter
T78.110SICD10CMOther adverse food reactions due to milk and dairy products with tolerance to baked milk, sequela
T78.111ICD10CMOther adverse food reaction due to milk and dairy products with reactivity to baked milk
T78.111AICD10CMOther adverse food reaction due to milk and dairy products with reactivity to baked milk, initial encounter
T78.111DICD10CMOther adverse food reaction due to milk and dairy products with reactivity to baked milk, subsequent encounter
T78.111SICD10CMOther adverse food reaction due to milk and dairy products with reactivity to baked milk, sequela
T78.119ICD10CMOther adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified
T78.119AICD10CMOther adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, initial encounter
T78.119DICD10CMOther adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, subsequent encounter
T78.119SICD10CMOther adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, sequela
T78.12ICD10CMOther adverse food reaction due to eggs
T78.120ICD10CMOther adverse food reaction due to egg with tolerance to baked egg
T78.120AICD10CMOther adverse food reaction due to egg with tolerance to baked egg, initial encounter
T78.120DICD10CMOther adverse food reaction due to egg with tolerance to baked egg, subsequent encounter
T78.120SICD10CMOther adverse food reaction due to egg with tolerance to baked egg, sequela
T78.121ICD10CMOther adverse food reaction due to egg with reactivity to baked egg
T78.121AICD10CMOther adverse food reaction due to egg with reactivity to baked egg, initial encounter
T78.121DICD10CMOther adverse food reaction due to egg with reactivity to baked egg, subsequent encounter
T78.121SICD10CMOther adverse food reaction due to egg with reactivity to baked egg, sequela
T78.129ICD10CMOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified
T78.129AICD10CMOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, initial encounter
T78.129DICD10CMOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, subsequent encounter
T78.129SICD10CMOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, sequela
T78.19ICD10CMOther adverse food reactions, not elsewhere classified
T78.19xAICD10CMOther adverse food reactions, not elsewhere classified, initial encounter
T78.19xDICD10CMOther adverse food reactions, not elsewhere classified, subsequent encounter
T78.19xSICD10CMOther adverse food reactions, not elsewhere classified, sequela
Z91.0110ICD10CMAllergy to milk products, unspecified
Z91.0111ICD10CMAllergy to milk products with tolerance to baked milk
Z91.0112ICD10CMAllergy to milk products with reactivity to baked milk
Z91.0120ICD10CMAllergy to eggs, unspecified
Z91.0121ICD10CMAllergy to eggs with tolerance to baked egg
Z91.0122ICD10CMAllergy to eggs with reactivity to baked egg
Z91.018ICD10CMAllergy to other foods
Moderate persistent asthma
J45.40ICD10CMModerate persistent asthma, uncomplicated
Severe persistent asthma
J45.50ICD10CMSevere persistent asthma, uncomplicated
J45.51ICD10CMSevere persistent asthma with (acute) exacerbation

ICD code information from First Databank (FDB).

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data