Emapalumab-lzsg
Generic Name: emapalumab-lzsg
Brand Names:
Gamifant
11 DESCRIPTION Emapalumab-lzsg is an interferon gamma (IFNγ) neutralizing antibody. Emapalumab-lzsg is produced in Chinese Hamster Ovary cells by recombinant DNA technology. Emapalumab-lzsg is an IgG1 immunoglobulin with a molecular weight of approximately 148 kDa.
Overview
11 DESCRIPTION Emapalumab-lzsg is an interferon gamma (IFNγ) neutralizing antibody. Emapalumab-lzsg is produced in Chinese Hamster Ovary cells by recombinant DNA technology. Emapalumab-lzsg is an IgG1 immunoglobulin with a molecular weight of approximately 148 kDa.
Uses
1 INDICATIONS AND USAGE GAMIFANT is indicated for the treatment of: adult and pediatric (newborn and older) patients with primary hemophagocytic lymphohistiocytosis (HLH) with refractory, recurrent or progressive disease or intolerance with conventional HLH therapy. adult and pediatric ( newborn and older) patients with HLH/macrophage activation syndrome (MAS) in known or suspected Still’s disease, including systemic Juvenile Idiopathic Arthritis (sJIA), with an inadequate response or intolerance to glucocorticoids, or with recurrent MAS.
Dosage
2 DOSAGE AND ADMINISTRATION For intravenous infusion only: Primary HLH recommended starting dosage: 1 mg/kg as an intravenous infusion over 1 hour twice per week. ( 2.1 ) HLH/MAS in Still’s disease recommended starting dose: 6 mg/kg, followed by 3 mg/kg every 3 days for 5 doses, then 3 mg/kg twice per week. Given as an intravenous infusion over 1 hour. ( 2.2 ) For both indications, the dose may be titrated up to a maximum of 10 mg/kg. ( 2.5 , 2.6 ) 2.1 Recommended Dosage for Primary Hemophagocytic Lymphohistiocytosis The recommended starting dose of GAMIFANT is 1 mg/kg given as a central or peripheral intravenous infusion over 1 hour twice per week (every three to four days).
Side Effects
6 ADVERSE REACTIONS The following adverse reactions are described elsewhere in the labeling: Infections [see Warnings and Precautions ( 5.1 )] Increased Risk of Infection with Use of Live Vaccines [see Warnings and Precautions ( 5.2 )] Infusion-Related Reactions [see Warnings and Precautions ( 5.3 )] In patients with primary HLH, the most common adverse reactions (≥ 20%) were: infections, hypertension, infusion-related reactions, and pyrexia. ( 6.1 ) In patients with HLH/MAS in Still’s disease, the most common adverse reactions (≥20%) were:viral infections, including cytomegalovirus infection or reactivation, and rash. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact 1-866-773-5274 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Interactions
7 DRUG INTERACTIONS 7.1 Effect of GAMIFANT on Cytochrome P450 Substrates The formation of CYP450 enzymes may be suppressed by increased levels of cytokines (such as IFNγ) during chronic inflammation. By neutralizing IFNγ, use of GAMIFANT may normalize CYP450 activities which may reduce the efficacy of drugs that are CYP450 substrates due to increased metabolism. Upon initiation or discontinuation of concomitant GAMIFANT, monitor for reduced efficacy and adjust dosage of CYP450 substrate drugs as appropriate.
Warnings
5 WARNINGS AND PRECAUTIONS Infections: Monitor patients for signs and symptoms and treat promptly. Test for latent tuberculosis. Consider administering prophylactic treatment against Herpes Zoster, Pneumocystis jirovecii and fungal infections. ( 5.1 ) Live Vaccines: Do not administer live or live attenuated vaccines to patients receiving GAMIFANT. ( 5.2 ) Infusion-Related Reactions: Monitor patients for infusion-related reactions. Interrupt infusion for severe infusion reactions and institute appropriate medical management. ( 5.3 ) 5.1 Infections GAMIFANT may increase the risk of fatal and serious infections to include specific pathogens favored by IFNγ neutralization, including mycobacteria, Herpes Zoster virus, and Histoplasma Capsulatum. 4 CONTRAINDICATIONS None. None. ( 4 )
Pregnancy
8.1 Pregnancy Risk Summary There are no available data on GAMIFANT use in pregnant women to inform a drug-associated risk of adverse developmental outcomes. In an animal reproduction study, a murine surrogate anti-mouse IFNγ antibody administered to pregnant mice throughout gestation crossed the placental barrier, and no fetal harm was observed (see Data ) . The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S.
Storage
16 HOW SUPPLIED/STORAGE AND HANDLING GAMIFANT (emapalumab-lzsg) injection is a sterile, clear to slightly opalescent, colorless to slightly yellow solution supplied in the following packaging configuration: NDC 66658-501-01 – containing one 10 mg/2 mL (5 mg/mL) single-dose vial NDC 66658-505-01 – containing one 50 mg/10 mL (5 mg/mL) single-dose vial NDC 66658-510-01 – containing one 100 mg/20 mL (...
Frequently Asked Questions
What is Emapalumab-lzsg used for?▼
1 INDICATIONS AND USAGE GAMIFANT is indicated for the treatment of: adult and pediatric (newborn and older) patients with primary hemophagocytic lymphohistiocytosis (HLH) with refractory, recurrent or progressive disease or intolerance with conventional HLH therapy. adult and pediatric ( newborn and older) patients with HLH/macrophage activation syndrome (MAS) in known or suspected Still’s disease, including systemic Juvenile Idiopathic Arthritis (sJIA), with an inadequate response or intolerance to glucocorticoids, or with recurrent MAS.
What are the side effects of Emapalumab-lzsg?▼
6 ADVERSE REACTIONS The following adverse reactions are described elsewhere in the labeling: Infections [see Warnings and Precautions ( 5.1 )] Increased Risk of Infection with Use of Live Vaccines [see Warnings and Precautions ( 5.2 )] Infusion-Related Reactions [see Warnings and Precautions ( 5.3 )] In patients with primary HLH, the most common adverse reactions (≥ 20%) were: infections, hypertension, infusion-related reactions, and pyrexia. ( 6.1 ) In patients with HLH/MAS in Still’s disease, the most common adverse reactions (≥20%) were:viral infections, including cytomegalovirus infection or reactivation, and rash. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact 1-866-773-5274 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Can I take Emapalumab-lzsg during pregnancy?▼
8.1 Pregnancy Risk Summary There are no available data on GAMIFANT use in pregnant women to inform a drug-associated risk of adverse developmental outcomes. In an animal reproduction study, a murine surrogate anti-mouse IFNγ antibody administered to pregnant mice throughout gestation crossed the placental barrier, and no fetal harm was observed (see Data ) . The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S.
What are the important warnings for Emapalumab-lzsg?▼
5 WARNINGS AND PRECAUTIONS Infections: Monitor patients for signs and symptoms and treat promptly. Test for latent tuberculosis. Consider administering prophylactic treatment against Herpes Zoster, Pneumocystis jirovecii and fungal infections. ( 5.1 ) Live Vaccines: Do not administer live or live attenuated vaccines to patients receiving GAMIFANT. ( 5.2 ) Infusion-Related Reactions: Monitor patients for infusion-related reactions. Interrupt infusion for severe infusion reactions and institute appropriate medical management. ( 5.3 ) 5.1 Infections GAMIFANT may increase the risk of fatal and serious infections to include specific pathogens favored by IFNγ neutralization, including mycobacteria, Herpes Zoster virus, and Histoplasma Capsulatum. 4 CONTRAINDICATIONS None. None. ( 4 )
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Medical Disclaimer
This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.