BTX-9341 demonstrated potent degradation of CDK4/6 and tumor growth regression in resistant cells in preclinical breast cancer models, along with robust blood brain barrier penetration
SOS1 degraders exhibited antiproliferative effects and inhibited tumor cell growth in a broad range of KRAS-mutated cell lines
SAN DIEGO, May 25, 2023 /PRNewswire/ -- Biotheryx, Inc., a biopharmaceutical company discovering and developing a portfolio of first-in-class protein degraders with a focus on validated targets in cancer and inflammatory disease, today announced two poster presentations at the 2023 American Society of Clinical Oncology (ASCO) Annual Meeting, being held June 2–6, 2023, in Chicago, Illinois and online. The presentations highlight preclinical data for bifunctional degraders of CDK4/6, including development candidate BTX-9341, for the treatment of estrogen receptor positive (ER+)/human epidermal growth factor receptor 2 negative (HER2-), and of son of sevenless homolog 1 (SOS1) for the treatment of KRAS mutant cancers.
"These new preclinical data demonstrate the potential of our bifunctional CDK4/6 and SOS1 degraders to potently degrade their targets, ultimately effectively inhibiting tumor growth together with the strength of Biotheryx's PRODEGY platform to efficiently design first-in-class degraders," said Philippe Drouet, President and Chief Executive Officer of Biotheryx. "Besides these encouraging efficacy results, BTX-9341, our oral CDK4/6 development candidate, exhibited superior blood brain barrier penetration versus inhibitors and good tumor exposure when dosed orally. We look forward to advancing BTX-9341 towards clinical development to overcome drug resistance challenges faced by patients with solid tumors such as ER+/HER2- breast cancer."
2023 ASCO Annual Meeting Presentation Details:
Title: Discovery of CDK4/6 bifunctional degraders for ER+/HER2- breast cancer and triple negative breast cancer
Presenter: Hannah Majeski, Ph.D., Principal Scientist – Biology
Abstract #: 1083
Session: Breast Cancer – Metastatic
Session Date and Time: Sunday, June 4, 2023, at 8:00 a.m. CDT
Title: Development of bifunctional CRBN-SOS1 degraders for treatment of mutant KRAS cancers
Presenter: Kyle Begovich, Ph.D., Senior Scientist – Biology
Abstract #: 3151
Session: Developmental Therapeutics – Molecularly Targeted Agents and Tumor Biology
Session Date and Time: Saturday, June 3, 2023, at 8:00 a.m. CDT
Following the presentations at the meeting, PDF copies of the presentations and posters will be available in the "Publications and Presentations" section of Biotheryx's website.
About Biotheryx, Inc.
Biotheryx is a biopharmaceutical company discovering and developing a portfolio of first-in-class protein degraders, including bifunctional degraders and molecular glues. Our initial focus is on deploying the differentiated potential of degraders towards validated targets in cancer and inflammatory disease. Members of our founding and scientific teams previously developed the first U.S. Food and Drug Administration (FDA) approved modulators of Cereblon, the most widely validated E3 ligase involved in protein degradation, and we have applied our expertise in Cereblon binding to build our proprietary PRODEGY platform. Our pipeline of bifunctional degraders includes BTX-9341, the first-ever degrader of CDK4/6 for solid tumors, and the first-ever degraders of SOS1 for pan-KRAS mutant cancers and PDE4 for inflammatory diseases. Our pipeline of molecular glues includes BTX-1188, a rationally designed, dual-targeting molecular glue degrader of GSPT1 and IKZF1/3 for acute myeloid leukemia and solid tumors, and undisclosed oncology targets through our research collaboration and license agreement with Incyte. For more information, please visit www.biotheryx.com and engage with us on LinkedIn.
SOURCE Biotheryx, Inc.