On March 19, 2026 Cardiff Oncology, Inc. (Nasdaq: CRDF), a clinical-stage biotechnology company leveraging PLK1 inhibition to develop novel therapies across a range of cancers, reported that new preclinical data highlighting the potential of its highly specific oral PLK1 inhibitor, onvansertib, in combination with trastuzumab deruxtecan (T-DXd) will be presented at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2026, taking place April 17-22, 2026 in San Diego, California.
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The poster presentation will showcase findings demonstrating that onvansertib enhanced the antitumor activity of T-DXd and reversed resistance in therapy-resistant HER2-low breast cancer models.
Poster Presentation Details:
Title: PLK1 inhibitor onvansertib potentiates the antitumor efficacy of trastuzumab deruxtecan (T-DXd) and reverses its resistance in therapy-resistant HER2-low breast cancer models
Date & Time: April 19, 2026 | 2:00 PM – 5:00 PM PT
Abstract Number: 329
The poster will be made available on the Scientific Publications page of the Company’s website following the presentation.
About Onvansertib
Onvansertib is a highly specific, oral PLK1 inhibitor currently in mid-stage clinical development for RAS-mutated metastatic colorectal cancer. It is also being evaluated in multiple other cancers through investigator-initiated studies, including metastatic pancreatic ductal adenocarcinoma (mPDAC), small cell lung cancer (SCLC), triple-negative breast cancer (TNBC), and chronic myelomonocytic leukemia (CMML).
(Press release, Cardiff Oncology, MAR 19, 2026, View Source [SID1234663774])