Onconova Therapeutics, Inc...today announced an update on the investigator-initiated Phase 1/2a trial of oral rigosertib plus nivolumab in advanced metastatic KRAS mutated (KRAS+) non-small cell lung cancer (NSCLC). The clinical data to date provide preliminary evidence of potential anti-cancer activity of rigosertib-nivolumab combination therapy in advanced metastatic KRAS+ non-small cell lung cancer.