Alhemo Pen (concizumab-mtci)

Antihemophilic Products Subcutaneous Pen Injector (ML)

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

Overview

Concizumab-mtci, a humanized immune globulin G type 4 (IgG4) monoclonal antibody, is a tissue factor pathway inhibitor (TFPI) antagonist.

Concizumab-mtci is a monoclonal antibody that inhibits endogenous tissue factor pathway inhibitor (TFPI), enhancing factor Xa production during the initiation phase of coagulation. This promotes thrombin formation and clot development to achieve hemostasis in patients with hemophilia A or B regardless of inhibitor status. The activity of concizumab is not affected by factor VIII or factor IX inhibitors, and the drug does not induce or increase the development of these inhibitors due to lack of structural or sequence similarity.

Following a single subcutaneous loading dose of 1 mg/kg, steady-state concentrations of concizumab-mtci were reached by day 4 and remained stable with once daily maintenance dosing. Exposure increased in a greater-than-dose-proportional manner following subcutaneous administration. Time to maximum plasma concentration ranged from 8-99 hours following a single dose of 0.05-3 mg/kg.

Concizumab-mtci is eliminated through both linear and non-linear mechanisms due to target-mediated drug disposition (TMDD), shifting to linear catabolism once TFPI is saturated. About 90% of the drug is eliminated within 4 days of the last dose, with a half-life of approximately 1 day. Concizumab-mtci is metabolized into small peptides via catabolic pathways.

Pharmacokinetics were not significantly affected by age (12-79 years), race, or hemophilia type (A or B with or without inhibitors). Although no studies have evaluated renal or hepatic impairment, altered exposure is not expected because concizumab-mtci is a monoclonal antibody. Drug exposure increases with body weight, as observed across a range of weights from 27-130.7 kg.

Higher doses of concizumab-mtci led to lower levels of free TFPI and prolonged suppression. In patients with inhibitors receiving concizumab-mtci prophylaxis, pre-dose free TFPI dropped from 88.3 ng/mL at baseline to 10.7 ng/mL at week 24, compared to 76 ng/mL in those treated on-demand. In patients without inhibitors receiving concizumab-mtci prophylaxis, pre-dose free TFPI dropped from 84.2 ng/mL at baseline to 11.1 ng/mL at week 24, compared to 80.6 ng/mL in those treated on-demand.

Thrombin peak levels indicated restored thrombin generation with concizumab-mtci.

USES: This medication is used by people with a certain inherited bleeding problem (hemophilia A or B) to help prevent or lessen how often you have bleeding problems. Concizumab belongs to a class of medications known as monoclonal antibodies. It works by helping your blood to clot normally, which helps prevent bleeding due to hemophilia.

Generic name: concizumab-mtci
Pronunciation: (kon-SIZ-ue-mab)
Drug class: Antihemophilic Products
Therapeutic class: Hematological Agents

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Alhemo Pen:

  • Bleeding Prevention In Hereditary Factor Ix Deficiency
  • Bleeding Prevention In Hereditary Factor Viii Deficiency

Also known as: Bleeding Prevention In Classic Hemophilia, Bleeding Prevention In Congenital Factor Viii Deficiency, Bleeding Prevention In Hemophilia A, Bleeding Prophylaxis In Hemophilia A, Hemorrhage Prophylaxis In Hemophilia A, Prevention Of Bleeding Episode In Hemophilia A.

Dosing

Concizumab-mtci is dosed by body weight (kg); recalculate the dose if the patient's body weight changes.

Drug interactions

No formal drug interaction studies have been conducted to date.

Contraindications

*Patients with a known history of serious hypersensitivity to the drug or any of its components.

Adverse reactions

Adverse reactions reported in >=5% of concizumab-mtci-treated patients in clinical studies were injection site reactions, headache, and urticaria.

Precautions

No enhanced messaging available.

ICD codes

CodeTypeDescription
Bleeding prevention in hereditary factor IX deficiency
D67ICD10CMHereditary factor IX deficiency
Bleeding prevention in hereditary factor VIII deficiency
D66ICD10CMHereditary factor VIII deficiency

ICD code information from First Databank (FDB).

Formulary status

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