Generic Name and Formulations:
Ixabepilone 15mg/vial, 45mg/vial; pwd for IV infusion after constitution and dilution; diluent contains alcohol, polyoxyethylated castor oil.
Indications for IXEMPRA:
Metastatic or locally advanced breast cancer: In combination with capecitabine after failure of an anthracycline and a taxane; and as monotherapy after failure of an anthracycline, a taxane, and capecitabine.
Pretreat with both H1 and H2 blockers 1hr before infusion; and with steroid if previous hypersensitivity reaction occurred. 40mg/m2 by IV infusion over 3hrs, once every 3wks. Use max body surface area (BSA) of 2.2m2 to calculate dose if BSA >2.2m2. Moderate hepatic impairment (as monotherapy): initially 20mg/m2 per dose; max 30mg/m2 per dose (see literature). Neuropathy, myelosuppression, concomitant strong CYP3A4 inhibitors: reduce dose. Concomitant strong CYP3A4 inducers: consider gradual dose increases. See literature.
Baseline neutrophils <1500cells/mm3 or platelets <100,000cells/mm3. AST or ALT >2.5XULN or bilirubin >1XULN (in combination with capecitabine).
Toxicity in hepatic impairment.
Monitor CBC and liver function at baseline, then periodically. Hepatic impairment (ALT or AST >10XULN or bilirubin >3XULN: not recommended; ALT or AST >5XULN: limited data, use caution). Diabetes. Neuropathy. Cardiac disease (discontinue if cardiac ischemia or cardiac dysfunction occurs). Monitor for signs/symptoms of neuropathy, neutropenia. Pregnancy (Cat.D), nursing mothers: not recommended.
Epothilone microtubule inhibitor.
Potentiated by strong CYP3A4 inhibitors (eg, azole antifungals, protease inhibitors, certain macrolides, nefazodone, grapefruit juice); avoid. Caution with mild or moderate CYP3A4 inhibitors; consider alternative agents. Antagonized by strong CYP3A4 inducers (eg, phenytoin, carbamazepine, rifampin, rifabutin, dexamethasone, phenobarbital); avoid. Avoid St. John's wort.
Peripheral sensory neuropathy, fatigue, asthenia, myalgia, arthralgia, alopecia, GI upset, stomatitis, mucositis, musculoskeletal pain, palmar-plantar erythrodysesthesia syndrome, anorexia, abdominal pain, nail disorder, constipation; myelosuppression (neutropenia, leukopenia, anemia, thrombocytopenia); hypersensitivity reactions; others.
Kit—1 vial (w. diluent)