Study of PX-866 and Docetaxel in Solid Tumors

This is a Phase 1/2 open-label study. In the Phase 1 part of the study, PX-866 was given in combination with docetaxel to patients with incurable locally advanced, recurrent or metastatic cancer. Phase 2 of the study is an open-label, randomized evaluation of the antitumor activity and safety of PX-866, administered at the MTD/RD identified in Phase 1 (8mg daily), in combination with docetaxel versus docetaxel alone in patients with locally advanced, recurrent, or metastatic NSCLC (Group 1) or patients with locally advanced, recurrent, or metastatic SCCHN (Group 2). Group 1 (patients with locally advanced, recurrent, or metastatic NSCLC) is now closed to enrollment. All treatments will be administered on a 21-day cycle. Docetaxel 75 mg/m2 will be administered IV on Day 1 of each 21-day cycle. PX-866 will be administered orally or via PEG tube (if applicable) once per day on Days 1 to 21 of all treatment cycles in patients randomized to the treatment arm containing PX-866. Patients will be evaluated for progression approximately every 6 weeks. Patients with stable disease (SD) or better, per investigator assessment, will receive repeat cycles of treatment on a 21-day schedule until disease progression, unacceptable toxicity or withdrawal of consent.