Cardiff Oncology Announces Positive Update from its Randomized Phase 2 Trial of Onvansertib in First-line RAS-mutated mCRC

Core Insights - Cardiff Oncology, Inc. announced positive results from the CRDF-004 Phase 2 clinical trial, demonstrating that onvansertib combined with FOLFIRI/bevacizumab (bev) shows dose-dependent improvements in overall response rates and progression-free survival (PFS) in patients with RAS-mutated metastatic colorectal cancer (mCRC) [1][3][4] Group 1: Clinical Trial Results - The trial showed that the 30 mg dose of onvansertib with FOLFIRI/bev is selected for further registrational trials based on its efficacy [2][3] - In the intent-to-treat analysis, onvansertib with FOLFIRI/bev outperformed both standard of care (SoC) regimens, with a confirmed objective response rate (ORR) of 44.4% for the 30 mg dose [1][3] - Median PFS for the 30 mg onvansertib group was not reached, indicating a potential benefit over SoC [3][4] Group 2: Safety and Tolerability - Onvansertib was reported to be safe and well-tolerated, with no significant additive toxicity observed in the trial [1][3] - Grade 3 or higher adverse events were infrequent, with neutropenia being the most common treatment-emergent adverse event [5] Group 3: Future Plans - Cardiff Oncology plans to initiate a registrational program later this year, pending finalization of trial design in consultation with the FDA [2][3] - The company expects to provide final data and registrational plans in the first half of 2026 [1][3] Group 4: Industry Context - There is a significant unmet need for improved first-line treatment options for patients with RAS-mutated mCRC, as current treatments have not significantly advanced in over two decades [5] - Onvansertib's novel mechanism of action and promising preliminary results support the need for further investigation in a large Phase 3 trial [5]