A phase II clinical trial found no survival benefit for the lung cancer drug retaspimycin in non-small cell lung cancer (NSCLC). The trial examined NSCLC patients with a history of smoking who were given the chemotherapy agent docetaxel (Taxotere) either with or without retaspimycin. Adding retaspimycin did not improve overall survival in NSCLC patients in general or in the subset of patients with squamous cell carcinoma (a type of NSCLC closely linked to smoking). The company will complete enrollment in a separate study investigating retaspimycin in combination with everolimus (Afinitor) by the end of 2013, but will begin no further clinical trials with retaspimycin.