৳ 126,784/unit
Pack: ৳ 126,784
৳ 126,784/unit
Pack: ৳ 126,784
At a glance
Obinutuzumab is a CD20-directed cytolytic monoclonal antibody used for chronic lymphocytic leukemia (CLL) and follicular lymphoma (FL). It binds to CD20 antigen on B-cells to mediate B-cell lysis.
Indications
- Previously untreated chronic lymphocytic leukemia (with chlorambucil)
- Previously untreated follicular lymphoma (with chemotherapy + maintenance)
- Refractory or relapsed follicular lymphoma (with bendamustine + maintenance)
Pharmacology
Obinutuzumab binds to CD20 antigen to mediate B-cell lysis through immune effector cells (ADCC, ADCP), direct apoptosis, and complement-dependent cytotoxicity (CDC).
Dosage
CLL (with Chlorambucil, 6 x 28-day cycles):
- Cycle 1, Day 1: 100 mg at 25 mg/hour over 4 hours; Day 2: 900 mg at 25-50 mg/hour, increased by 50 mg/hour every 30 min to max 400 mg/hour; Days 8 & 15: 1,000 mg at 50-100 mg/hour, increased by 50-100 mg/hour every 30 min to max 400 mg/hour
- Cycles 2-6, Day 1: 1,000 mg at 50-100 mg/hour to max 400 mg/hour
FL (Induction + Maintenance): Induction: 1,000 mg on Cycle 1, Days 1,8,15 and Cycles 2-6/8, Day 1; Maintenance: 1,000 mg every 2 months for up to 2 years
Side effects
Common Side Effects (>10%):
- Infusion related reactions (69%)
- Neutropenia (33%)
- Hypocalcemia (32%)
- Hyperkalemia (31%)
- Hyponatremia (29%)
- Creatinine increased (28%)
- AST/SGOT increased (28%)
- AST/SGPT increased (25%)
- Hypoalbuminemia (16%)
- Alkaline phosphatase increased (16%)
- Thrombocytopenia (15%)
- Hypokalemia (13%)
- Anemia (12%)
Serious: Hepatitis B reactivation, PML, tumor lysis syndrome, infections
Use in pregnancy
Use in Pregnancy: Obinutuzumab is highly unsafe during pregnancy; animal studies show fetal B-cell depletion; consider potential risk to fetus.
Pregnancy Category: D — always consult a doctor before taking during pregnancy.
Precautions & warnings
- Caution in patients with history or current hepatitis B virus infection
- Risk of tumor lysis syndrome (high tumor burden, high lymphocyte count)
- Cardiac and respiratory impairment
- Caution in renal impairment
- Avoid live viral vaccines
- Caution during pregnancy and lactation
Overdose effects
Limited information on overdose; symptomatic treatment.
Storage conditions
Store at 2-8°C in refrigerator; do not freeze; protect from light; do not shake.