Ibalizumab
FDA Drug Information • Also known as: Trogarzo
- Brand Names
- Trogarzo
- Dosage Form
- SOLUTION
- Product Type
- DRUG FOR FURTHER PROCESSING
Description
11 DESCRIPTION TROGARZO is a CD4-directed post-attachment HIV-1 inhibitor. Ibalizumab-uiyk is a CD4 domain 2-directed humanized monoclonal antibody of immunoglobulin G (IgG) isotype 4 with a molecular weight of approximately 150 kDa. Ibalizumab-uiyk is produced by recombinant DNA technology in murine myeloma non-secreting 0 (NS0) cells. TROGARZO Injection is a sterile, colorless to slightly yellow and clear to slightly opalescent solution with no visible particles in a single-dose vial for intravenous administration (by IV infusion or IV push). Each single-dose vial delivers approximately 1.33 mL containing 200 mg of ibalizumab-uiyk, and contains the following inactive ingredients: 10 mM L-histidine (2.06 mg), 0.045% polysorbate 80 (0.60 mg), 52 mM sodium chloride (4.04 mg) and 5.2% sucrose (69.2 mg). TROGARZO solution has a pH of 6.0 and contains no preservative.
What Is Ibalizumab Used For?
1 INDICATIONS AND USAGE TROGARZO, in combination with other antiretroviral(s), is indicated for the treatment of human immunodeficiency virus type 1 (HIV-1) infection in heavily treatment-experienced adults with multidrug resistant HIV-1 infection failing their current antiretroviral regimen. TROGARZO, a CD4-directed post-attachment HIV-1 inhibitor, in combination with other antiretroviral(s), is indicated for the treatment of human immunodeficiency virus type 1 (HIV-1) infection in heavily treatment-experienced adults with multidrug resistant HIV-1 infection failing their current antiretroviral regimen.
Dosage and Administration
2 DOSAGE AND ADMINISTRATION The recommended dosage regimen is a single loading dose of 2,000 mg followed by a maintenance dose of 800 mg every 2 weeks administered as a diluted intravenous infusion (IV infusion) or undiluted intravenous push (IV push). ( 2.1 , 2.2 , 2.3 ) Duration of IV Infusion or IV Push IV Infusion (Diluted) IV Push (Undiluted) Loading Dose 2,000 mg Over at least 30 minutes Over at least 90 seconds Maintenance Dose 800 mg Over at least 15 minutes Over at least 30 seconds 2.1 Recommended Dosage The recommended dosage regimen is a single loading dose of 2,000 mg followed by a maintenance dose of 800 mg every 2 weeks administered as a diluted intravenous infusion (IV infusion) or undiluted intravenous push (IV push) [ see Dosage and Administration ( 2.2 , 2.3 ) ]. TROGARZO is available in a single-dose, 2 mL vial containing 150 mg/mL of ibalizumab-uiyk. Each vial delivers approximately 1.33 mL containing 200 mg of ibalizumab-uiyk. Dose modifications of TROGARZO are not required when administered with any other antiretroviral or any other treatments. 2.2 Preparation Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Discard vial if solution is cloudy, if there is pronounced discoloration or if there is foreign particulate matter. See Table 1 for the appropriate number of vials required to prepare both the loading dose of 2,000 mg and the maintenance doses of 800 mg. Table 1. Recommended TROGARZO Dose and Number of Vials Per Administration TROGARZO Dose TROGARZO Vials (Total Volume to be Withdrawn) Loading dose of 2,000 mg (IV infusion or undiluted IV push) 10 vials (13.3 mL) Maintenance dose of 800 mg (IV infusion or undiluted IV push) 4 vials (5.32 mL) TROGARZO solution for IV infusion or IV push should be prepared by a trained medical professional using aseptic technique as follows: For intravenous infusion For administration as an IV infusion, the appropriate number of vials are diluted in 250 mL of 0.9% Sodium Chloride Injection, USP.
Side Effects (Adverse Reactions)
6 ADVERSE REACTIONS The following adverse drug reactions are discussed in other sections of the labeling: Immune Reconstitution Inflammatory Syndrome [see Warnings and Precautions ( 5.2 )] The most common adverse reactions (incidence ≥ 5%) were diarrhea, dizziness, nausea, and rash. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact THERA patient support ® at 1-833-23THERA (1-833-238-4372) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. A total of 350 subjects have been exposed to TROGARZO in the ibalizumab clinical development program, including 45 subjects who received TROGARZO through expanded access programs. A total of 19 subjects received TROGARZO via IV push. The safety profile of TROGARZO administered via IV push (Trial TMB-302) was similar to that seen with IV infusion administration (Trial TMB-301) [see Clinical Pharmacology ( 12.3 )]. Trial TMB-301 The primary safety assessment of TROGARZO is based on 24 weeks of data from Trial TMB-301. TMB-301 was a single-arm trial of TROGARZO which enrolled 40 heavily treatment-experienced subjects with multidrug resistant HIV-1 on a failing HIV treatment regimen. Subjects received a single 2,000 mg IV loading dose of TROGARZO followed seven days later by the initiation of an optimized background regimen (OBR) including at least one agent to which the subject's virus was susceptible. Two weeks after the TROGARZO loading dose, 800 mg of TROGARZO was administered IV. The IV administration of TROGARZO 800 mg was continued every 2 weeks through Week 25. The most common adverse reactions (all Grades) reported in at least 5% of subjects were diarrhea, dizziness, nausea, and rash. Table 3 shows the frequency of adverse reactions occurring in 5% or more of subjects. Table 3. Adverse Reactions (All Grades) Reported in ≥ 5% of Subjects Receiving TROGARZO and Optimized Background Regimen for 23 Weeks in Trial TMB-301 % Subjects N=40 Diarrhea 8% Dizziness 8% Nausea 5% Rash Includes pooled terms “rash”, “rash erythematous”, “rash generalized”, “rash macular”, “rash maculopapular”, and “rash papular” 5% Most (90%) of the adverse reactions reported were mild or moderate in severity. Two subjects experienced severe adverse reactions: one subject had a severe rash and one subject developed immune reconstitution inflammatory syndrome manifested as an exacerbation of progressive multifocal leukoencephalopathy. Laboratory Abnormalities Table 4 shows the frequency of laboratory abnormalities (≥ Grade 3) in Trial TMB-301. Table 4. Selected Laboratory Abnormalities (≥ Grade 3) in Trial TMB-301 % Subjects N=40 Bilirubin (≥ 2.6 x ULN) 5% Direct Bilirubin (> ULN) 3% Creatinine (> 1.8 x ULN or 1.5 x baseline) 10% Blood Glucose (> 250 mg/dL) 3% Lipase (> 3.0 x ULN) 5% Uric Acid (> 12 mg/dL) 3% Hemoglobin (< 8.5 g/dL) 3% Platelets (< 50,000/mm 3 ) 3% Leukocytes (< 1.5 x 10 9 cells/L) 5% Neutrophils (< 0.6 x 10 9 cells/L) 5% 6.2 Postmarketing Experience The following adverse reactions have been identified during post‐approval use of TROGARZO. Because these reactions are reported voluntarily from a population of uncertain size, it is not possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Immune system disorders: hypersensitivity reactions including infusion-related reactions and anaphylactic reactions have been reported [see Warnings and Precautions ( 5.1 )] . Skin and subcutaneous tissue disorders: pruritus
Contraindications
4 CONTRAINDICATIONS TROGARZO is contraindicated in patients with a prior hypersensitivity reaction to TROGARZO or any components of the product [see Warnings and Precautions ( 5.1 )]. Prior hypersensitivity reaction to TROGARZO or any components of the product.
Pregnancy and Breastfeeding
8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antiretrovirals during pregnancy. This registry does not include Trogarzo, but likely includes patients’ concomitant antiretroviral drugs. Healthcare providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry (APR) at 1–800–258–4263. Risk Summary Based on animal data, ibalizumab-uiyk use during pregnancy may cause reversible immunosuppression (CD4+ T cell and B cell lymphocytopenia) in infants exposed to ibalizumab-uiyk in utero. Immunoglobulin G (IgG) antibodies, such as ibalizumab-uiyk, are transported across the placenta in significant amounts, especially near term; therefore, ibalizumab-uiyk has the potential to be transferred from the mother to the developing fetus (see Clinical Considerations). There are no available data on ibalizumab-uiyk use in pregnant women to evaluate for a drug- associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes. The 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. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. In a reproductive study in monkeys, reversible decreases in CD4+ T cells and B cells and increases in CD8+ T cells were observed within the first 4 weeks after birth in infants born to pregnant monkeys receiving ibalizumab-uiyk intravenously ( see Data ). Lymphocyte counts returned to near normal levels by 3 months of age. One infant monkey died from a systemic viral infection that may be related to ibalizumab-uiyk-induced immunosuppression. No malformations or premature births were observed in this study. Clinical Considerations Fetal/Neonatal Adverse Reactions...
How Supplied
16 HOW SUPPLIED/STORAGE AND HANDLING TROGARZO (ibalizumab-uiyk) injection is a sterile colorless to slightly yellow and clear to slightly opalescent solution with no visible particles for intravenous administration (by IV infusion or IV push). It is packaged in a single-dose 2 mL clear glass vial containing 200 mg/1.33 mL (150 mg/mL) of ibalizumab-uiyk. TROGARZO vial stopper is not made with natural rubber latex. TROGARZO is available in a carton containing two single-dose vials (NDC 62064-122-02). Store vials under refrigeration at 2 to 8ºC (36-46 ºF). Do not freeze and protect from light. Once diluted, the TROGARZO solution should be administered immediately [see Dosage and Administration ( 2.2 )] .
About This Information
This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.
What are side effects?
Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.
What are drug interactions?
Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.