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Ref Type Journal Article
PMID (21847063)
Authors Riely GJ, Johnson ML, Medina C, Rizvi NA, Miller VA, Kris MG, Pietanza MC, Azzoli CG, Krug LM, Pao W, Ginsberg MS
Title A phase II trial of Salirasib in patients with lung adenocarcinomas with KRAS mutations.
URL
Abstract Text KRAS mutations are present in 30% of lung adenocarcinomas. Salirasib prevents Ras membrane binding thereby blocking the function of all Ras isoforms. This phase II study determined the activity of salirasib in patients with advanced lung adenocarcinomas with KRAS mutations.Two cohorts of patients with stage IIIB/IV lung adenocarcinoma were eligible: patients with tumors with KRAS mutations who were previously treated with chemotherapy and patients receiving initial therapy who had ≥15 pack-year smoking history. Salirasib was given orally from days 1 to 28 of a 35-day cycle. The primary end point was the rate of nonprogression at 10 weeks.Thirty-three patients were enrolled. Thirty patients had KRAS mutations (23 patients who were previously treated and 7/10 patients who had no prior therapy). Of the previously treated patients, 7 of 23 (30%) had stable disease at 10 weeks, and 4 of 10 (40%) previously untreated patients had stable disease at 10 weeks. No patient had a radiographic partial response (0% observed rate, 95% confidence interval 0-12%). The median overall survival was not reached (>9 months) for previously untreated patients and it was 15 months for patients who received prior chemotherapy. Diarrhea, nausea, and fatigue were the most common toxicities.Salirasib at the current dose and schedule has insufficient activity in the treatment of KRAS mutant lung adenocarcinoma to warrant further evaluation. The successful enrollment of 30 patients with tumors with KRAS mutant lung adenocarcinoma over 15 months at a single site demonstrates that drug trials directed at a KRAS-specific genotype in lung cancer are feasible.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References