GlobeNewswire Inc | Oct 1, 2021 08:00AM EDT

October 01, 2021

SOUTH SAN FRANCISCO, Calif., Oct. 01, 2021 (GLOBE NEWSWIRE) -- Tempest Therapeutics, Inc. (Nasdaq: TPST), a clinical-stage oncology company developing potentially first-in-class therapeutics that combine both targeted and immune-mediated mechanisms, today announced the acceptance of a presentation on TPST-1495, a selective antagonist of both EP2 and EP4 prostaglandin receptors, at the Society for Immunotherapy of Cancers (SITC) 36th Annual Meeting taking place November 10-14, 2021 at the Walter E. Washington Convention Center in Washington, D.C.

Details of the poster presentation are as follows:

Title: Dual blockade of the EP2 and EP4 PGE2 receptors with TPST-1495 is an optimal approach for drugging the prostaglandin pathwayAbstract 850#:Category: Novel Single Agent ImmunotherapiesDate/ 11/12/2021 ? 11/13/2021, 7:00 am ? 8:30 pm ETtime:Location: Poster Hall

To view the abstract details, please visit the SITC 2021 website located at https://www.sitcancer.org/2021/home.

About TPST-1495

TPST-1495 is an orally-available small molecule designed to block the EP2 and EP4 receptors in the prostaglandin (PGE2) pathway, while sparing the homologous but differentially active EP1 and EP3 receptors. PGE2 signaling through EP2 and EP4 has been observed both to enhance tumor progression and promote immune suppression. Tempest has conductedhead-to-headpreclinical studies comparing TPST-1495 to single antagonists of EP2 and EP4 and observed significantly enhanced activity of TPST-1495 in both overcoming PGE2-mediated suppression of human immune cells in vitro, as well as significantly increased anti-tumor activity in mouse models of human colorectal cancer. Tempest is currently evaluating the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and possible anti-tumor activity of TPST-1495 in a multicenter Phase 1a/1b dose and schedule optimization study in subjects with advanced solid tumors, withthe potential to expand in indicationsknown to be prostaglandin-driven, including colorectal cancer, or CRC, and in a tumor indication-agnostic, biomarker-selected cohort.

About Tempest Therapeutics

Tempest Therapeutics is a clinical-stage oncology company advancing small molecules that combine both targeted and immune-mediated mechanisms with the potential to treat a wide range of tumors. The companys two novel clinical programs are TPST-1495 and TPST-1120, antagonists of EP2/EP4 and PPAR, respectively. Both TPST-1495 and TPST-1120 are advancing through Phase 1 studies designed to study both agents as monotherapies and in combination with other approved agents. Tempest is also developing an orally available inhibitor of TREX-1 designed to activate the cGAS/STING pathway selectively. Tempest is headquartered in South San Francisco and supported by notable healthcare investors.More information about Tempest can be found on the companys website at www.tempesttx.com.

Forward-Looking Statements

This press release contains forward-looking statements (including within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and Section 27A of the Securities Act of 1933, as amended (the Securities Act)) concerning Tempest Therapeutics, Inc. (Tempest). These statements may discuss goals, intentions and expectations as to future plans, trends, events, results of operations or financial condition, or otherwise, based on current beliefs of the management of Tempest, as well as assumptions made by, and information currently available to, management of Tempest. Forward-looking statements generally include statements that are predictive in nature and depend upon or refer to future events or conditions, and include words such as may, will, should, would, could, expect, anticipate, plan, likely, believe, estimate, project, intend, potentially, and other similar expressions. All statements that are not historical facts are forward-looking statements, including: any statements regarding the progress, scope or timing of the development and evaluation in clinical trials of our product candidates; the benefits that may be derived from any future products or the commercial; or market opportunity with respect to any of our future products. Forward-looking statements are based on information available to Tempest as of the date hereof and are not guarantees of future performance. Actual results could differ materially from those contained in any forward-looking statement as a result of various factors, including, without limitation: our inability to successfully or timely develop our product candidates; our inability to realize any benefits from any future products; and our failure to realize any commercial or market benefit from future products, if any.These and other risks are described in greater detail in the Form 10-Q filed by Tempest with the Securities and Exchange Commission on August 12, 2021. Except as required by applicable law, Tempest undertakes no obligation to revise or update any forward-looking statement, or to make any other forward-looking statements, whether as a result of new information, future events or otherwise. These forward-looking statements should not be relied upon as representing Tempests views as of any date subsequent to the date of this press release and should not be relied upon as prediction of future events. In light of the foregoing, investors are urged not to rely on any forward-looking statement in reaching any conclusion or making any investment decision about any securities of Tempest.

Investor Contact:

Sylvia WheelerWheelhouse Life Science Advisorsswheeler@wheelhouselsa.com

Media Contact:

Aljanae Reynolds Wheelhouse Life Science Advisorsareynolds@wheelhouselsa.com