Cardiff Oncology, Inc. is a clinical-stage biotechnology company. It is leveraging PLK1 inhibition, a well-validated oncology drug target, to develop novel therapies across a range of cancers with unmet medical need. It is focused on clinical programs in indications, such as RAS-mutated metastatic colorectal cancer (mCRC), and in investigator-initiated trials in metastatic pancreatic ductal adenocarcinoma (mPDAC), small cell lung cancer (SCLC), and triple negative breast cancer (TNBC). Its lead drug candidate, Onvansertib, is an oral, small-molecule drug candidate that is highly specific for PLK1 inhibition with a 24-hour half-life. It has other ongoing and planned clinical trials of onvansertib: one trial (CRDF-004) in first-line treatment in patients with RAS-mutated mCRC, and investigator-initiated trials in first-line mPDAC, relapsed SCLC and unresectable locally advanced or metastatic TNBC.