Imaavy (nipocalimab-aahu)

Antimyasthenic Agents Intravenous Vial (Ml)

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

Overview

Nipocalimab-aahu, a recombinant human immunoglobulin G1 (IgG1) monoclonal antibody, is a neonatal fragment crystallizable (Fc) receptor blocker.

Nipocalimab-aahu, a recombinant human immunoglobulin G1 lambda (IgG1lambda) monoclonal antibody, is a neonatal Fc receptor blocker. Unlike other neonatal Fc receptor inhibitors, nipocalimab-aahu has an aglycosylated Fc region, a modification that eliminates Fc-mediated effector functions such as Fcgamma-receptor binding, antibody-dependent cell-mediated cytotoxicity (ADCC), and complement-dependent cytotoxicity (CDC). The specific modification of the antibody is clinically important in the treatment of generalized myasthenia gravis, where additional immune activation or complement-driven inflammation could worsen disease pathology.

By retaining high-affinity binding to the neonatal Fc receptor while lacking effector activity, nipocalimab functions as a selective Fc receptor blocker that accelerates IgG catabolism and lowers circulating IgG and pathogenic acetylcholine receptor (AChR) and muscle-specific tyrosine kinase (MuSK) autoantibody levels without immune-cell depletion or broad immunosuppression and without causing cell lysis, tissue damage, or activation of immune responses by these effector mechanisms.

Nipocalimab exhibits non-linear, concentration-dependent pharmacokinetics. Following a single IV infusion, exposure of nipocalimab increased in a dose-proportional manner while the AUC increased in a greater than dose-proportional manner at doses ranging from 0.3-60 mg/kg (4 times higher than the recommended maintenance dose). The mean half-life of nipocalimab-aahu is 29.3 hours.

The drug is expected to be degraded by proteolytic enzymes into small particles and amino acids. The pharmacokinetics of nipocalimab are not affected by age, sex, or race.

USES: Nipocalimab is used to treat a certain muscle condition (generalized myasthenia gravis). It may help to improve symptoms of muscle weakness. It is also used to treat warm autoimmune hemolytic anemia (wAIHA).

It may help to improve symptoms of anemia (such as shortness of breath, tiredness).

Generic name: nipocalimab-aahu
Pronunciation: (NIP-oh-KAL-i-mab)
Drug class: Antimyasthenic Agents
Therapeutic class: Locomotor System

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Imaavy:

  • Anti-Acetylcholine Receptor (Achr) Antibody Positive Generalized Myasthenia Gravis
  • Anti-Muscle-Specific Tyrosine Kinase (Musk) Antibody Positive Generalized Myasthenia Gravis
  • Autoimmune Hemolytic Anemia

Also known as: Achr-Ab(+) Generalized Myasthenia Gravis, Acquired Hemolytic Anemia Due To Antibodies.

Dosing

No dosing information is available for this tab.

Drug interactions

No formal drug interaction studies have been conducted with nipocalimab-aahu. Since nipocalimab-aahu is not metabolized by cytochrome P-450 (CYP) enzymes, interactions with medications that are substrates, inhibitors, or inducers of CYP enzymes are not expected. Nipocalimab-aahu undergoes degradation by proteolytic enzymes into small peptides and amino acids.

Contraindications

*History of serious hypersensitivity reaction to nipocalimab or any product excipients.

Adverse reactions

The most common adverse reactions experienced in 10% or more of patients with generalized myasthenia gravis receiving nipocalimab-aahu include respiratory tract infections, peripheral edema, and muscle spasms.

Precautions

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ICD codes

CodeTypeDescription
Anti-acetylcholine receptor (Achr) antibody positive generalized myasthenia gravis
G70.0ICD10CMMyasthenia gravis
G70.00ICD10CMMyasthenia gravis without (acute) exacerbation
G70.01ICD10CMMyasthenia gravis with (acute) exacerbation
Anti-muscle-specific tyrosine kinase (muSk) antibody positive generalized myasthenia gravis
G70.0ICD10CMMyasthenia gravis
G70.00ICD10CMMyasthenia gravis without (acute) exacerbation
G70.01ICD10CMMyasthenia gravis with (acute) exacerbation
Autoimmune hemolytic anemia
D59.0ICD10CMDrug-induced autoimmune hemolytic anemia
D59.1ICD10CMOther autoimmune hemolytic anemias
D59.10ICD10CMAutoimmune hemolytic anemia, unspecified
D59.11ICD10CMWarm autoimmune hemolytic anemia
D59.12ICD10CMCold autoimmune hemolytic anemia
D59.13ICD10CMMixed type autoimmune hemolytic anemia
D59.19ICD10CMOther autoimmune hemolytic anemia

ICD code information from First Databank (FDB).

Formulary status

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