Bendamustine Hydrochloride

FDA Drug Information • Also known as: Belrapzo, Bendamustine Hydrochloride, Bendeka, Treanda, Vivimusta

Brand Names: Belrapzo, Bendamustine Hydrochloride, Bendeka, Treanda, Vivimusta
Route: INTRAVENOUS
Dosage Form: INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION
Product Type: HUMAN PRESCRIPTION DRUG

Description

11 DESCRIPTION Bendamustine hydrochloride is an alkylating agent. The chemical name of bendamustine hydrochloride monohydrate is 5-[Bis(2-chloroethyl)-amino]-1-methyl-1H-benzimidazole-2- butanoic acid hydrochloride monohydrate. Its empirical molecular formula is C 16 H 21 Cl 2 N 3 O 2 ∙ HCl.H 2 O and the molecular weight is 412.74. Bendamustine hydrochloride monohydrate contains a mechlorethamine group and a benzimidazole heterocyclic ring with a butyric acid substituent, and has the following structural formula: VIVIMUSTA (bendamustine hydrochloride injection) is intended for intravenous use after dilution with either 0.9% Sodium Chloride Injection, USP or 2.5% Dextrose/0.45% Sodium Chloride Injection, USP. It is supplied as a sterile, clear, and colorless to yellow solution in a clear glass multiple-dose vial. Each milliliter contains 25 mg of bendamustine hydrochloride equivalent to 22.7 mg of bendamustine, 5 mg of monothioglycerol, 39.45 mg (5% v/v) of absolute alcohol, and q.s. to 1 mL polyethylene glycol 400. Sodium hydroxide is used to adjust pH of polyethylene glycol 400. VIVIMUSTA Structure

What Is Bendamustine Hydrochloride Used For?

1 INDICATIONS & USAGE VIVIMUSTA is an alkylating drug indicated for treatment of patients with:

Chronic lymphocytic leukemia (CLL). Efficacy relative to first line therapies other than chlorambucil has not been established. ( 1.1 )

Indolent B-cell non-Hodgkin lymphoma (NHL) that has progressed during or within six months of treatment with rituximab or a rituximab-containing regimen. ( 1.2 ) 1.1 Chronic Lymphocytic Leukemia (CLL) VIVIMUSTA is indicated for the treatment of adult patients with chronic lymphocytic leukemia. Efficacy relative to first line therapies other than chlorambucil has not been established. 1.2 Non-Hodgkin Lymphoma (NHL) VIVIMUSTA is indicated for the treatment of adult patients with indolent B-cell non-Hodgkin lymphoma that has progressed during or within six months of treatment with rituximab or a rituximab-containing regimen.

Dosage and Administration

2 DOSAGE & ADMINISTRATION For CLL :

100 mg/m 2 infused intravenously over 20 minutes on Days 1 and 2 of a 28 day cycle, up to 6 cycles ( 2.1 ) For NHL :

120 mg/m 2 infused intravenously over 20 minutes on Days 1 and 2 of a 21 day cycle, up to 8 cycles ( 2.2 ) 2.1 Dosing Instructions for CLL Recommended Dosage The recommended dosage is 100 mg/m 2 administered intravenously over 20 minutes on Days 1 and 2 of a 28-day cycle for up to 6 cycles. Dose Delays, Dose Modifications and Re-initiation of Therapy for CLL Delay VIVIMUSTA for Grade 4 hematologic toxicity or clinically significant Grade 2 or greater non-hematologic toxicity. Once non-hematologic toxicity has recovered to less than or equal to Grade 1 and/or the blood counts have improved [Absolute Neutrophil Count (ANC) greater than or equal to 1 x 10 9 /L and platelets greater than or equal to 75 x 10 9 /L], reinitiate VIVIMUSTA at the discretion of the healthcare provider. In addition, consider dose reduction [ see Warnings and Precautions ( 5.1 )] Dose modifications for hematologic toxicity: for Grade 3 or greater toxicity, reduce the dose to 50 mg/m 2 on Days 1 and 2 of each cycle; if Grade 3 or greater toxicity recurs, reduce the dose to 25 mg/m 2 on Days 1 and 2 of each cycle. Dose modifications for non-hematologic toxicity: for clinically significant Grade 3 or greater toxicity, reduce the dose to 50 mg/m 2 on Days 1 and 2 of each cycle. Consider dose re-escalation in subsequent cycles at the discretion of the healthcare provider. 2.2 Dosing Instructions for NHL Recommended Dosage The recommended dosage is 120 mg/m 2 administered intravenously over 20 minutes on Days 1 and 2 of a 21-day cycle for up to 8 cycles. Dose Delays, Dose Modifications and Re-initiation of Therapy for NHL Delay VIVIMUSTA for Grade 4 hematologic toxicity or clinically significant Grade 2 or greater non-hematologic toxicity. Once non-hematologic toxicity has recovered to less than or equal to Grade 1 and/or the blood counts have improved [Absolute Neutrophil Count (ANC) greater than or equal to 1 x 10 9 /L and platelets greater than or equal to 75 x 10 9 /L], reinitiate VIVIMUSTA at the discretion of the healthcare provider. In addition, consider dose reduction [see Warnings and Precautions ( 5.1 )] Dose modifications for hematologic toxicity: for Grade 4 toxicity, reduce the dose to 90 mg/m 2 on Days 1 and 2 of each cycle; if Grade 4 toxicity recurs, reduce the dose to 60 mg/m 2 on Days 1 and 2 of each cycle. Dose modifications for non-hematologic toxicity: for Grade 3 or greater toxicity, reduce the dose to 90 mg/m 2 on Days 1 and 2 of each cycle; if Grade 3 or greater toxicity recurs, reduce the dose to 60 mg/m 2 on Days 1 and 2 of each cycle. 2.3 Preparation and Administration VIVIMUSTA is a hazardous drug. Follow applicable special handling and disposal procedures. 1 VIVIMUSTA is a clear and colorless to yellow solution in a multiple-dose vial. Store VIVIMUSTA refrigerated at 2°C to 8°C (36°F to 46°F)....

Side Effects (Adverse Reactions)

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labelling:

Myelosuppression [see Warnings and Precautions ( 5.1 )]

Infections [see Warnings and Precautions ( 5.2 )]

Progressive Multifocal Leukoencephalopathy [see Warnings and Precautions ( 5.3 )]

Anaphylaxis and Infusion-Related Reactions [see Warnings and Precautions ( 5.4 )]

Tumor Lysis Syndrome [see Warnings and Precautions ( 5.5 )]

Skin Reactions [see Warnings and Precautions ( 5.6 )]

Hepatotoxicity [see Warnings and Precautions ( 5.7 )]

Other Malignancies [see Warnings and Precautions ( 5.8 )]

Extravasation Injury [see Warnings and Precautions ( 5.9 )]

Adverse reactions (> 5%) during infusion and within 24 hours post-infusion are nausea, and fatigue. ( 6.1 )

Most common adverse reactions (≥15%) for CLL are anemia, thrombocytopenia, neutropenia, lymphopenia, leukopenia, hyperbilirubinemia, pyrexia, nausea, vomiting. ( 6.1 )

Most common adverse reactions (≥15%) for NHL are lymphopenia, leukopenia, anemia neutropenia, thrombocytopenia, nausea, fatigue, vomiting, diarrhea, pyrexia, constipation, anorexia, cough, headache, weight decreased dyspnea, rash, and stomatitis. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Azurity Pharmaceuticals, Inc. at 1-800-461-7449 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trials 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. Chronic Lymphocytic Leukemia (CLL) The data described below reflect exposure to bendamustine hydrochloride in 153 patients. Bendamustine hydrochloride was studied in an active-controlled, randomized trial. The population was 45-77 years of age, 63% were male, 100% were White, and had treatment naïve CLL. All patients started the study at a dose of 100 mg/m2 intravenously over 30 minutes on Days 1 and 2 every 28 days. Adverse reactions were reported according to NCI CTC v.2.0. In the randomized CLL clinical study, non-hematologic adverse reactions (any grade) in the bendamustine hydrochloride group that occurred with a frequency greater than 15% were pyrexia (24%), nausea (20%), and vomiting (16%). Other adverse reactions seen frequently in one or more studies included asthenia, fatigue, malaise, and weakness; dry mouth; somnolence; cough; constipation; headache; mucosal inflammation and stomatitis. Worsening hypertension was reported in 4 patients treated with bendamustine hydrochloride and in none treated with chlorambucil. Three of these 4 adverse reactions were described as a hypertensive crisis and were managed with oral medications and resolved. The most frequent adverse reactions leading to study withdrawal for patients receiving bendamustine hydrochloride were hypersensitivity (2%) and pyrexia (1%). Table 2 summarizes the adverse reactions that were reported in ≥ 5% of patients in either treatment group in the randomized CLL clinical study. Table 2: Non-Hematologic Adverse Reactions that Occurred in at Least 5% of Patients Who Received Bendamustine Hydrochloride or Chlorambucil in the Randomized CLL Clinical Study Adverse Reaction Bendamustine Hydrochloride (N=153) Chlorambucil (N=143) All Grades n (%) Grade 3 or 4 n (%) All Grades n (%) Grade 3 or 4 n (%) Total number of patients with at least 1 adverse reaction 121 (79) 52 (34) 96 (67) 25 (17) Gastrointestinal disorders Nausea 31 (20) 1 (<1) 21 (15) 1 (<1) Vomiting 24 (16) 1 (<1) 9 (6) 0 Diarrhea 14 (9) 2 (1) 5 (3) 0 General disorders and administration site conditions Pyrexia 36 (24) 6 (4) 8 (6) 2 (1) Fatigue 14 (9) 2 (1) 8 (6) 0 Asthenia 13 (8) 0 6 (4) 0 Chills 9 (6) 0 1 (<1) 0 Immune system disorders Hypersensitivity 7 (5) 2 (1) 3 (2) 0 Infections and infestations Nasopharyngitis 10 (7) 0 12 (8) 0 Infection 9 (6) 3 (2) 1 (<1) 1...

Drug Interactions

7 DRUG INTERACTIONS Consider alternative therapies that are not CYP1A2 inducers or inhibitors during treatment with VIVIMUSTA. ( 7.1 ) 7.1 Effect of Other Drugs on VIVIMUSTA CYP1A2 Inhibitors The coadministration of VIVIMUSTA with CYP1A2 inhibitors may increase bendamustine plasma concentrations and may result in increased incidence of adverse reactions with VIVIMUSTA [see Clinical Pharmacology ( 12.3 )]. Consider alternative therapies that are not CYP1A2 inhibitors during treatment with VIVIMUSTA. CYP1A2 Inducers The coadministration of VIVIMUSTA with CYP1A2 inducers may decrease bendamustine plasma concentrations and may result in decreased efficacy of VIVIMUSTA [see Clinical Pharmacology ( 12.3 )]. Consider alternative therapies that are not CYP1A2 inducers during treatment with VIVIMUSTA.

Contraindications

4 CONTRAINDICATIONS VIVIMUSTA is contraindicated in patients with a known hypersensitivity (e.g., anaphylactic and anaphylactoid reactions) to bendamustine, polyethylene glycol 400, dehydrated alcohol, or monothioglycerol [see Warnings and Precautions ( 5.4 )] History of a hypersensitivity reaction to bendamustine, polyethylene glycol 400, dehydrated alcohol, or monothioglycerol. Reactions to bendamustine hydrochloride have included anaphylaxis and anaphylactoid reactions. ( 4 , 5.4 )

Pregnancy and Breastfeeding

8.1 Pregnancy Risk Summary In animal reproduction studies, intraperitoneal administration of bendamustine to pregnant mice and rats during organogenesis at doses 0.6 to 1.8 times the maximum recommended human dose (MRHD) resulted in embryo-fetal and/or infant mortality, structural abnormalities, and alterations to growth (see Data). There are no available data on bendamustine hydrochloride use in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes. Advise pregnant women of the potential risk to a fetus. 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. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data Bendamustine hydrochloride was intraperitoneally administered once to mice from 210 mg/m 2 (approximately 1.8 times the MRHD) during organogenesis and caused an increase in resorptions, skeletal and visceral malformations (exencephaly, cleft palates, accessory rib, and spinal deformities) and decreased fetal body weights. This dose did not appear to be maternally toxic and lower doses were not evaluated. Repeat intraperitoneal administration of bendamustine hydrochloride in mice on gestation days 7 to 11 resulted in an increase in resorptions from 75 mg/m 2 (approximately 0.6 times the MRHD) and an increase in abnormalities from 112.5 mg/m 2 (approximately 0.9 times the MRHD), similar to those seen after a single intraperitoneal administration. Bendamustine hydrochloride was intraperitoneally administered once to rats from 120 mg/m 2 (approximately the MRHD) on gestation days 4, 7, 9, 11, or 13 and caused embryo and fetal lethality as indicated by increased resorptions and a decrease in live fetuses. A...

Overdosage

10 OVERDOSAGE The intravenous lethal dose 50 (LD 50 ) of bendamustine hydrochloride is 240 mg/m 2 in the mouse and rat. Toxicities included sedation, tremor, ataxia, convulsions and respiratory distress. Across all clinical experience, the reported maximum single dose received was 280 mg/m 2 . Three of four patients who received this dose showed ECG changes considered dose-limiting at 7 and 21 days post-dosing. These changes included QT prolongation (one patient), sinus tachycardia (one patient), ST and T wave deviations (two patients) and left anterior fascicular block (one patient). Cardiac enzymes and ejection fractions remained normal in all patients. No specific antidote for bendamustine hydrochloride overdose is known. Management of overdosage should include general supportive measures, including monitoring of hematologic parameters and ECGs.

How Supplied

16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied VIVIMUSTA (bendamustine hydrochloride injection) is a sterile clear, colorless to yellow solution for intravenous use supplied in individual cartons of multiple-dose vials providing 100 mg bendamustine hydrochloride per 4 mL. 100 mg/4 mL (25 mg/mL) NDC 24338-270-01 Safe Handling and Disposal VIVIMUSTA (bendamustine hydrochloride injection) is a hazardous drug. Follow applicable special handling and disposal procedures 1 . Care should be exercised in the handling and preparation of solutions prepared from VIVIMUSTA. The use of gloves and safety glasses is recommended to avoid exposure in case of breakage of the vial or other accidental spillage. If gloves come in contact with VIVIMUSTA prior to dilution, remove gloves and follow disposal procedures. If a solution of VIVIMUSTA (bendamustine hydrochloride injection) contacts the skin, wash the skin immediately and thoroughly with soap and water. If VIVIMUSTA (bendamustine hydrochloride injection) contacts the mucous membranes, flush thoroughly with water. Storage Store VIVIMUSTA (bendamustine hydrochloride injection) refrigerated at 2°C to 8°C (36°F to 46°F). Retain in original carton until time of use to protect from light.

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.