Generic Name and Formulations:
Pemetrexed 100mg/vial, 500mg/vial; pwd for IV inj after reconstitution and dilution; preservative-free.
Lilly, Eli and Company
Locally advanced or metastatic nonsquamous non-small cell lung cancer (NSCLC): in combination with cisplatin as initial treatment, or as maintenance in patients whose disease has not progressed after 4 cycles of platinum-based 1st-line chemotherapy; or as a single agent after prior chemotherapy. Malignant pleural mesothelioma (MPM): in combination with cisplatin in patients whose disease is either unresectable or who are otherwise not candidates for curative surgery. Limitations of use: not for the treatment of squamous cell NSCLC.
See full labeling. 500mg/m2 by IV infusion over 10 mins on Day 1 of each 21-day cycle. Adjust dose if toxicity (esp. myelosuppression) develops. Combination therapy: Give cisplatin beginning 30 mins after pemetrexed infusion. Supplement with oral folic acid and intramuscular vitamin B12 prior to initiating pemetrexed and continue during treatment. Pretreat with corticosteroid the day before, the day of, and day after pemetrexed.
See full labeling. Renal impairment (CrCl <45mL/min): not recommended. Discontinue if Grade 3 or 4 neurotoxicity occurs, or if any Grade 3 or 4 toxicity occurs after two dose reductions. Do not start a treatment cycle unless ANC is ≥1500cells/mm3, platelets ≥100,000cells/mm3 and CrCl ≥45mL/min. Hepatic impairment. Monitor CBCs, platelets, renal and hepatic function. Clinically significant third space fluid: consider draining effusion first. Pregnancy (Cat.D); avoid, use effective contraception. Nursing mothers: not recommended.
May be potentiated by nephrotoxic agents, drugs eliminated by renal tubular secretion (eg, probenecid). Concomitant NSAIDs: use caution in patients with mild to moderate renal insufficiency (esp. ibuprofen).
Fatigue, nausea, anorexia, vomiting, stomatitis, pharyngitis, constipation, fever, infection with neutropenia, rash, desquamation, neutropenia, leukopenia, anemia, thrombocytopenia, elevated creatinine, chest pain, neuropathy; rare: renal failure.
Testing considerations: TS (thymidylate synthase) expression for response and toxicity
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