| Completed | 1/2 | 178 | US, Canada | PX-866 (SCCHN), Cetuximab (SCCHN), Erbitux, PX-866 (CRC), Cetuximab (CRC) | Cascadian Therapeutics Inc. | Incurable Metastatic Colorectal Carcinoma, Incurable Progressive, Recurrent or Metastatic Squamous Cell Carcinoma of the Head and Neck | 11/13 | 01/14 | | |