Biotechnology Following encouraging results from a Phase Ib study in Japan, Bayer, Bristol-Myers Squibb and Ono Pharmaceutical are collaborating on a clinical trial evaluating the combination of the German firm’s kinase inhibitor Stivarga (regorafenib) and anti-PD-1 immune checkpoint inhibitor Opdivo (nivolumab) from B-MS and Ono, in patients with microsatellite-stable metastatic colorectal cancer (MSS mCRC), the most common type of CRC. 18 July 2019