Generic Name and Formulations:
Bortezomib 3.5mg/vial; lyophilized pwd for IV or SC inj after reconstitution; contains mannitol.
Millennium Pharmaceuticals, Inc.
|Additional Adults dosing for multiple myeloma retreatment.|
Multiple myeloma. Mantle cell lymphoma in patients who have received at least one prior therapy.
Give as a 3–5 second IV bolus inj or as SC inj into thigh or abdomen (rotate sites). Previously untreated multiple myeloma: Treat for nine 6-week cycles in combination with oral melphalan and oral prednisone. Cycles 1–4: 1.3mg/m2 twice weekly (Days 1, 4, 8, 11, 22, 25, 29, 32); Cycles 5–9: 1.3mg/m2 once weekly (Days 1, 8, 22, 29). Relapsed multiple myeloma or mantle cell lymphoma: Standard schedule: 1.3mg/m2 twice weekly for 2 weeks (Days 1, 4, 8, 11) then 10 day rest period (Days 12–21); Extended therapy (if using >8 cycles): may use standard schedule, or maintenance schedule: 1.3mg/m2 once weekly for 4 weeks (Days 1, 8, 15, 22) then 13-day rest period (Days 23–35). Multiple myeloma patients who have previously responded to bortezomib (alone or in combination) and have relapsed at least 6 months after completing prior bortezomib therapy: may retreat starting at last tolerated dose, given twice weekly every 3 weeks (Days 1, 4, 8, 11); max 8 cycles. Allow at least 72hrs between consecutive doses. May be given as a single agent or in combination with dexamethasone. Dose modifications: see full labeling. SC inj may be considered for patients with pre-existing or at high-risk of peripheral neuropathy. Moderate-to-severe hepatic impairment: reduce to 0.7mg/m2 in 1st cycle; may consider dose increase to 1mg/m2 or further decrease to 0.5mg/m2 in subsequent cycles based on tolerance.
Boron or mannitol sensitivity. Intrathecal administration.
Hepatic impairment. Pre-existing severe neuropathy; treat only after careful risk-benefit assessment. Monitor for development or worsening of peripheral neuropathy; consider dose or schedule adjustment. Diabetes (closely monitor blood glucose). History of syncope. Avoid dehydration; give fluids and electrolytes. Heart disease (monitor for CHF). Interrupt therapy and evaluate if new or worsening cardiopulmonary symptoms develop. Monitor CBC, platelets, and for toxicities. High tumor burden (monitor for tumor lysis syndrome). Pregnancy (Cat.D); avoid. Nursing mothers: not recommended.
Concomitant strong CYP3A4 inducers (eg, rifampin): not recommended; efficacy may be reduced. Avoid St. John's Wort. Potentiated by strong CYP3A4 inhibitors (eg, ketoconazole, ritonavir); consider reducing bortezomib dose. Caution with hypotensives and hypoglycemics.
GI toxicity (eg, nausea, diarrhea, constipation, vomiting; interrupt therapy if severe), thrombocytopenia, neutropenia, anemia, leukopenia, lymphopenia, peripheral neuropathy, fatigue, neuralgia, rash, pyrexia, anorexia, asthenia, herpes reactivation, insomnia, dyspnea, paresthesia, headache, decreased appetite, dizziness, blurred vision, edema, arthralgia, pain, dysesthesia, psychiatric disorders, cough, pruritus, orthostatic hypotension, CHF, decreased LVEF, hepatotoxicity; rare: posterior reversible encephalopathy syndrome (discontinue if occurs).