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CLINICAL TRIAL, PHASE II
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
A phase 2 study with a daily regimen of the oral mTOR inhibitor RAD001 (everolimus) in patients with metastatic clear cell renal cell cancer.
Cancer 2009 June 2
BACKGROUND: Everolimus, an oral mammalian target of rapamycin (mTOR) inhibitor, affects tumor growth by blocking growth factor stimulation, arresting cell cycle progression, and inhibiting angiogenesis. mTOR inhibitors and agents with primarily antiangiogenic activity have been shown to have efficacy in renal cell cancer (RCC). This phase 2 study assessed the efficacy of daily oral dosing with everolimus in patients with RCC.
METHODS: Patients had confirmed predominantly clear cell RCC; had received
RESULTS: Of 41 enrolled patients, 39 were treated and evaluable for safety, 37 of whom were evaluable for response (2 patients withdrew after the first week of therapy). Approximately 78% of the patients were male, the median age was 60 years, 93% had a Zubrod performance status of 0 to 1, and 83% had received prior therapy. The median progression-free survival (PFS) was 11.2 months and the median overall survival was 22.1 months. Partial responses were observed in 5 (14%) patients, stable disease lasting >or=3 months was reported in 27 (73%) patients, and stable disease lasting >or=6 months was reported in 21 (57%) patients. Nausea (38% of patients), anorexia (38% of patients), diarrhea (31% of patients), stomatitis (31% of patients), pneumonitis (31% of patients), and rash (26% of patients) were common. Grade 3 of 4 adverse events included pneumonitis (18% of patients); transaminase elevations (10% of patients); thrombocytopenia, hyperglycemia, and alkaline phosphatase elevations (8% each of patients); and hyperlipidemia (5% of patients).
CONCLUSIONS: In the current study, everolimus demonstrated encouraging antitumor activity against metastatic RCC as indicated by a PFS >or= 6 months for approximately 70% of patients.
METHODS: Patients had confirmed predominantly clear cell RCC; had received
RESULTS: Of 41 enrolled patients, 39 were treated and evaluable for safety, 37 of whom were evaluable for response (2 patients withdrew after the first week of therapy). Approximately 78% of the patients were male, the median age was 60 years, 93% had a Zubrod performance status of 0 to 1, and 83% had received prior therapy. The median progression-free survival (PFS) was 11.2 months and the median overall survival was 22.1 months. Partial responses were observed in 5 (14%) patients, stable disease lasting >or=3 months was reported in 27 (73%) patients, and stable disease lasting >or=6 months was reported in 21 (57%) patients. Nausea (38% of patients), anorexia (38% of patients), diarrhea (31% of patients), stomatitis (31% of patients), pneumonitis (31% of patients), and rash (26% of patients) were common. Grade 3 of 4 adverse events included pneumonitis (18% of patients); transaminase elevations (10% of patients); thrombocytopenia, hyperglycemia, and alkaline phosphatase elevations (8% each of patients); and hyperlipidemia (5% of patients).
CONCLUSIONS: In the current study, everolimus demonstrated encouraging antitumor activity against metastatic RCC as indicated by a PFS >or= 6 months for approximately 70% of patients.
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