Takhzyro (lanadelumab-flyo)

Plasma Kallikrein Inhibitor, Recombinant Monoclonal Antibody Subcutaneous Syringe (Ml)

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

Overview

Lanadelumab, a recombinant fully human immunoglobulin G1 (IgG1) monoclonal antibody, is a plasma kallikrein inhibitor.

Lanadelumab-flyo is a recombinant fully human immunoglobulin G1 (IgG1) kappa light chain monoclonal antibody produced in a recombinant Chinese hamster ovary cell line. The drug binds to plasma kallikrein and inhibits its proteolytic activity. Plasma kallikrein is a protease that cleaves high molecular weight kininogen (HMWK), a cofactor formed during activation of the kallikrein-kinin (or contact) pathway, to generate cleaved HMWK (cHMWK) and bradykinin.

In patients with hereditary angioedema (HAE), low plasma concentrations of functionally active complement 1 (C1)-esterase inhibitor result in unrestrained activity of plasma kallikrein and elevated bradykinin levels, leading to increased vascular permeability and angioedema. By decreasing plasma kallikrein activity, lanadelumab controls excess bradykinin generation in patients with HAE. Concentration-dependent inhibition of plasma kallikrein, measured as a reduction of cHMWK concentrations, has been demonstrated following subcutaneous administration of lanadelumab-flyo at dosages of 150 mg every 4 weeks, 300 mg every 4 weeks, and 300 mg every 2 weeks in patients with HAE.

The pharmacokinetics of lanadelumab-flyo are approximately linear following subcutaneous administration of therapeutic doses in patients with HAE. Peak plasma concentrations are achieved in about 4-5 days, and steady state is reached in approximately 70 days. A mean accumulation ratio at steady state of 1.44, 1.42, or 2.43, respectively, was observed in patients receiving a lanadelumab-flyo dosage of 150 mg every 4 weeks, 300 mg every 4 weeks, or 300 mg every 2 weeks.

The elimination half-life of the drug is 14-15 days. The metabolism of lanadelumab-flyo has not been studied but is expected to be consistent with other endogenous antibodies, involving proteolysis in the liver and phagocytic cells of the immune system into small peptides and amino acids. Exposure to lanadelumab decreases with increasing body weight; however, this difference is not considered clinically important.

Age, sex, and race do not appear to affect the pharmacokinetics of the drug after correcting for body weight.

USES: This medication is used to help prevent severe swelling attacks due to a certain inherited immune disease (hereditary angioedema-HAE). Lanadelumab works by binding to a natural substance made by the body (kallikrein) and blocking its effect. This blocking effect lowers the amount of another natural substance (bradykinin) that causes symptoms during an attack of HAE.

Lanadelumab may help decrease symptoms such as abdominal pain/cramps, diarrhea, vomiting, or rapid swelling and pain of the hands, feet, limbs, face, tongue, or throat.

Generic name: lanadelumab-flyo
Pronunciation: (LAN-a-DEL-ue-mab)
Drug class: Plasma Kallikrein Inhibitor, Recombinant Monoclonal Antibody
Therapeutic class: Cardiovascular Therapy Agents

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Takhzyro:

  • Prevention Of Angioedema Attacks In Patient With Hereditary Angioedema

Also known as: Prevention Of Angioedema Attack In Hereditary Angioneurotic Edema, Prevention Of Angioedema Attacks In Patient With Hae, Prophylaxis Against Angioedema Attacks In Patient With Hae.

Dosing

No dosing information is available for this tab.

Drug interactions

No formal drug interaction studies with lanadelumab-flyo have been performed to date.

Use of rescue medications, such as plasma-derived and recombinant complement 1 (C1)-esterase inhibitor (human), icatibant, or ecallantide, for breakthrough hereditary angioedema attacks had no effect on clearance and volume of distribution of lanadelumab. In addition, the manufacturer states that concomitant use of analgesic, antibacterial, antihistamine, anti-inflammatory, or antirheumatic drugs had no effect on clearance and volume of distribution of lanadelumab.

Contraindications

*None.

Adverse reactions

The most common adverse effects reported in >=10% of patients receiving lanadelumab-flyo in clinical studies include injection site reactions (e.g., pain, erythema, bruising), upper respiratory tract infection, headache, rash, myalgia, dizziness, and diarrhea.

Precautions

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ICD codes

CodeTypeDescription
Prevention of angioedema attacks in patient with hereditary angioedema
D84.1ICD10CMDefects in the complement system

ICD code information from First Databank (FDB).

Formulary status

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