As Cardiff Oncology Inc. dosed the first patient in its phase II study of onvansertib (CRDF-004) in a first-line setting to treat RAS-mutated metastatic colorectal cancer (mCRC), the company also revealed positive efficacy data from its discontinued phase II of onvansertib as a second-line treatment of bevacizumab-naïve RAS-mutated mCRC.