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FDA Study May Proceed Notice Received for Phase 2 Trial of TPST-1495 for the Treatment of Familial Adenomatous Polyposis (FAP)

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Tempest Therapeutics
Tempest Therapeutics

Second clinical program entering Phase 2 with data expected 2026

BRISBANE, Calif., March 13, 2025 (GLOBE NEWSWIRE) -- Tempest Therapeutics, Inc. (Nasdaq: TPST), a clinical-stage biotechnology company developing first-in-class1 targeted and immune-mediated therapeutics to fight cancer, today announced that the Cancer Prevention Clinical Trials Network received a “Study May Proceed” letter from the U.S. Food and Drug Administration (FDA) to evaluate TPST-1495, the company’s novel dual receptor inhibitor of prostaglandin (PGE2) signaling, in a Phase 2 clinical trial for the treatment of patients with Familial Adenomatous Polyposis (FAP).

“Receiving the FDA’s clearance to proceed with our Phase 2 clinical trial for TPST-1495, our second clinical program, in FAP marks an important step forward in developing new treatment options for patients suffering from this high-risk disease that significantly increases the risk of multiple GI cancers,” said Sam Whiting M.D., Ph.D., chief medical officer and head of R&D of Tempest. “This collaboration with the Cancer Prevention Clinical Trials Network, financially supported by the National Cancer Institute’s Division of Cancer Prevention, underscores the urgent need for innovative approaches in cancer prevention, and we look forward to advancing this potential promising therapy to help patients facing this difficult disease."

The Phase 2 study in patients with FAP will begin this year and will be run by the Cancer Prevention Clinical Trials Network and funded by the National Cancer Institute (“NCI”) Division of Cancer Prevention.

About the TPST-1495 FAP Study

The planned Phase 2 study will evaluate the efficacy and safety of TPST-1495 in patients with Familial Adenomatous Polyposis (FAP) who have previously undergone colectomy. The primary efficacy objective is to assess the activity of TPST-1495 in reducing duodenal polyp burden in patients with FAP comparing baseline endoscopy to endoscopy after 6 months of treatment with TPST-1495. Additional objectives include reduction of polyp burden in retained rectum or IPAA and to assess the safety of TPST-1495.

About Tempest Therapeutics

Tempest Therapeutics is a clinical-stage biotechnology company advancing a diverse portfolio of small molecule product candidates containing tumor-targeted and/or immune-mediated mechanisms with the potential to treat a wide range of tumors. The company’s novel programs range from early research to later-stage investigation in a randomized global study in first-line cancer patients. Tempest is headquartered in Brisbane, California. More information about Tempest can be found on the company’s website at www.tempesttx.com.