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BACKGROUND: In this superiority study, pemetrexed was compared with erlotinib in pre-treated patients with metastatic non-small cell lung cancer (NSCLC). METHODS: Patients with stage IIIB/IV NSCLC who progressed after first-line or second-line treatment were randomized to receive either pemetrexed or erlotinib. In total, 21.7% of patients in the pemetrexed arm and 23.5% of patients in the erlotinib arm had squamous cell histology, and treatment was third line in 39.2% and 46.4% of patients, respectively. The primary study endpoint was time to tumor progression (TTP). Epidermal growth factor receptor/v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog (EGFR/KRAS) mutation status also was investigated. RESULTS: There was no difference in terms of the TTP (P 5.195), the objective response rate (P 5.469), or overall survival (P 5.986) between the 2 treatment arms. In patients who had squamous cell histology, erlotinib resulted in a superior TTP compared with pemetrexed (4.1 months vs 2.5 months, respectively; P 5.006). The incidence of grade 3 and 4 neutropenia, thrombocytopenia, and asthenia was significantly higher in the pemetrexed arm, whereas the incidence of grade 3 and 4 skin rash was higher in the erlotinib arm. CONCLUSIONS: Both pemetrexed and erlotinib had comparable efficacy in pre-treated patients with metastatic NSCLC, and the current results indicated that genotyping of tumor cells may have an important effect on treatment efficacy. Cancer 2013;119:2754-64.

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The biweekly administration of paclitaxel/carboplatin regimen in patients with castration-resistant prostate cancer is an active and well-tolerated regimen which merits to be further evaluated in the context of salvage treatment.

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