Cardiff Unveils Phase 1 Results of Onvensertib for Chronic Myelomonocytic Leukemia at ASH 2025
Clinical Trial Results: Cardiff Oncology presented new data from a Phase 1 trial of onvansertib, a PLK1 inhibitor, for treating relapsed/refractory chronic myelomonocytic leukemia (CMML) at the ASH Annual Meeting, showing preliminary efficacy in about 40% of patients.
Drug Tolerability: Onvansertib was well-tolerated as a monotherapy, with manageable treatment-emergent adverse events reported among the nine enrolled patients.
Future Development Plans: Although Cardiff Oncology does not plan to further develop onvansertib for CMML, the results support its potential in treating various hematologic and solid tumors.
Stock Performance: Following the announcement, Cardiff Oncology's stock rose by 10.90% to $2.34, with a slight increase in after-hours trading, reflecting positive investor sentiment.
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Cardiff Oncology Management Shakeup and Trial Update
- Management Changes: Cardiff Oncology announced the resignation of CEO Mark Erlander and CFO James Levine, with board member Mani Mohindru appointed as interim CEO, reflecting a focus on execution and clinical advancement that may impact investor confidence negatively.
- Clinical Trial Data Update: In the CRDF-004 Phase 2 trial for RAS-mutated metastatic colorectal cancer, the 30 mg dose group achieved a confirmed objective response rate of 72.2%, significantly higher than the 43.2% in the standard care group, indicating the potential efficacy of the new drug and possibly driving future registrational trials.
- Registrational Trial Plans: Based on clinical data, Cardiff Oncology plans to initiate a registrational trial later this year comparing onvansertib with standard care for 1L patients, which, if successful, could help expand market share.
- Analyst Perspective: William Blair lowered the probability of success from 50% to 45%, suggesting that the abrupt management changes and narrow focus on onvansertib may limit market opportunities, leading to a 31.9% drop in stock price to $2, close to the 52-week low.

Cardiff Oncology Shares Plunge 35% Following CEO and CFO Resignations
- Executive Departures: Cardiff Oncology's CEO Mark Erlander and CFO James Levine resigned, causing shares to plummet approximately 35% to a new 52-week low, indicating market concerns over leadership instability.
- Interim Leadership: The board appointed veteran biotech executive Mani Mohindru as interim CEO to replace Erlander, ensuring operational continuity during the executive transition period.
- Financial Stability: Brigitte Lindsay was promoted to Chief Accounting Officer to maintain the finance department's functionality, reflecting the company's commitment to financial management amid leadership changes.
- Clinical Trial Update: Cardiff announced plans to further test a 30 mg dose of its lead drug onvansertib in combination with FOLFIRI/bevacizumab, with a registrational trial expected to begin later this year pending FDA design confirmation, aiming to provide new treatment options for RAS-mutated metastatic colorectal cancer.






