HR+/HER2- is the largest subset of breast cancer in the United States, representing approximately 73% of diagnoses in the U.S. We believe the migration of the FDA-approved CDK4/6 inhibitors to earlier lines of treatment for metastatic breast cancer patients has created an opportunity for effective and well-tolerated oral therapies prior to patients advancing to receive various chemotherapy options. In the initial studies of SM-88, there were encouraging tumor responses in the HR+/HER2- patients, including complete responses or complete resolution of their tumor. The OASIS trial is aimed to confirm this activity and possibly identify the next step in the development path in this setting for SM-88.
Focus on Second-line Precision Promise Pancreatic Cancer Program
We undertook a comprehensive review of the two ongoing trials evaluating SM-88 in pancreatic cancer—Precision Promise, the Pancreatic Cancer Network-sponsored trial which is evaluating SM-88 as a second-line therapy, and TYME-88-Panc (Part 2), our clinical trial evaluating SM-88 as a third-line therapy.
The enrollment rates for TYME-88-Panc trial have progressed more slowly than the Company initially anticipated, due in large part to the COVID-19 pandemic, and our current projections for enrollment for these trials indicate that Precision Promise is likely to complete enrollment in a similar timeline to TYME-88-Panc. Furthermore, we identified higher-than-expected drop-out rates in patients randomized to the chemotherapy control arm, which could potentially impact the interpretive and regulatory utility of the data.
Based on the comparable enrollment completion timelines, the potential to reach a larger number of patients earlier in their disease in the second-line Precision Promise trial, potential impacts on data utility and expected resources needed for 3rd line study success, we made the decision to focus our resource allocation and development priorities toward second-line treatments with the Precision Promise trial and portfolio diversification into breast cancer. Accordingly, the Company has decided to stop enrollment in TYME-88-Panc and to begin the process of closing down the trial. We would like to thank the physicians and especially the patients who participated with this study.
“We believe that the market opportunities in HR+/HER2- breast cancer, second-line pancreatic and soft tissue sarcomas are incredibly compelling and increase the total addressable market of the pipeline. Based on the data, we have chosen to focus on these three categories first. Moreover, we expect our data-driven approach will allow us to better understand which target populations may most benefit from SM-88. We are excited about our new path forward and believe it will build more value for our stakeholders and improve the lives of people we endeavor to help,” concluded Mr. Cunningham.
Recently Appointed Members to the Leadership Team
In connection with our strategic review, a priority was to enhance our management team with the expertise to guide us through our next stage of development.
Acting Chief Medical Officer – Dr. Jan M. Van Tornout
Dr. Van Tornout brings over 25 years of medical experience in academia and industry, including over 15 years of global drug development in pharmaceutical and biotech settings and encompassing preclinical, IND, FIH, phase II-IV, (s)NDA, BLA, safety, medical affairs, clinical operations and regulatory experience. He has led clinical management and oncology teams at Natera, INOVIO Pharmaceuticals, Astellas Pharma, Bristol Myers Squibb and Amgen. Dr. Van Tornout has also served as a medical strategy consultant for various biotech companies including Cyclacel Pharmaceuticals, GlaxoSmithKline, Puma Biotechnology, Maverick Therapeutics, ERT, Huya Bioscience, and Gradalis.