Multicenter phase II study of brequinar sodium in patients with advanced lung cancer

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Abstract
A total of 53 patients with advanced lung cancer [non-small-cell (NSC), 21; small-cell (SC), 32] were treated with brequinar sodium. All of the NSC patients were chemotherapy-naive, but 31/32 (97%) SC patients had failed a multiagent chemotherapy program prior to study entry. Brequinar was given intravenously at a median weekly dose of 1200 mg/m2. The toxicity was moderate, with 19 patients (36%) experiencing grade 3 or 4 toxicity. Objective responses were observed in one NSC and two SC patients. We conclude that at this dose and on this schedule, brequinar does not have sufficient activity in patients with NSC or in patients with previously treated SC to warrant further evaluation. However, since responses were observed in previously treated SC lung-cancer patients, further evaluation in chemotherapy-naive patients may be warranted.