Kineta Presents New Preclinical Data on Lead Anti-CD27 Monoclonal Antibody at the Society for Immunotherapy of Cancer’s (SITC) 38th Annual Meeting

Lead Anti-CD27 Monoclonal Antibody Showed High Binding Affinity and Specificity

Drives Strong T Cell Activation and Proliferation as well as NK Cell Activation

Demonstrated In Vivo Antitumor Efficacy as a Single Agent and in Combination with Checkpoint Inhibitors in Solid and Hematological Tumor Models

SEATTLE, Nov. 03, 2023 (GLOBE NEWSWIRE) -- Kineta, Inc. (Nasdaq: KA), a clinical-stage biotechnology company focused on the development of novel immunotherapies in oncology that address cancer immune resistance, announced today the presentation of new preclinical data on the company’s anti-CD27 agonist monoclonal antibodies (mAbs) at the Society for Immunotherapy of Cancer’s (SITC) 38th Annual Meeting. Thierry Guillaudeux, Ph.D., Chief Scientific Officer of Kineta, presented the company’s poster revealing new preclinical data.

“We are thrilled to share the growing body of preclinical evidence from our selected lead anti-CD27 antibody, including the compelling new tumor model data as a monotherapy and in combination with other checkpoint therapies demonstrating antitumor efficacy in multiple types of mouse models,” said Dr. Guillaudeux. “We believe that our antibody has the potential to be a best-in-class, next-generation immunotherapy capable of addressing diverse types of solid and hematologic cancers.”

Key highlights from the poster presentation:

Dr. Guillaudeux presented data from in vitro and in vivo assessments to identify anti-CD27 agonist antibody lead candidates. The lead agonist anti-CD27 mAbs demonstrated high affinity binding to both human and cynomolgus monkey CD27 and not to mouse CD27. Additionally, they exhibited high specificity against CD27 with no cross-reactivity detected against other members of the tumor necrosis factor receptor superfamily (TNFRSF).

Furthermore, the agonist anti-CD27 antibodies share a different and complementary binding site to CD27 than CD70 (CD27 natural ligand) and induced strong NFkB signaling in the absence or presence of cross-linking. The anti-CD27 antibody-mediated NFkB activation acted in synergy with CD70. The strong agonist proprieties of the company’s lead anti-CD27 antibodies were further demonstrated on T cell proliferation and activation as well as NK cell activation.

Lastly, Kineta’s selected lead anti-CD27 candidate demonstrated antitumor efficacy in vivo as a single agent and in combination with other immunotherapies in multiple solid and hematological mouse tumor models.

The poster presentation is available for viewing under in the CD-27 section of the company's website at .

SITC Presentation Details:

Title: CD27 is a new promising T cell co-stimulatory target for the cancer immunotherapy – Development and selection of a lead anti-CD27 agonist antibody

Abstract Number: 1357

Date / Time: Friday, November 3 at 9:00 A.M. – 7:00 P.M. Pacific Time

Location: Exhibit Halls A and B1 – San Diego Convention Center

About Kineta

Kineta (Nasdaq: KA) is a clinical-stage biotechnology company with a mission to develop next-generation immunotherapies that transform patients’ lives. Kineta has leveraged its expertise in innate immunity and is focused on discovering and developing potentially differentiated immunotherapies that address the major challenges with current cancer therapy. The company’s immuno-oncology pipeline includes KVA12123, a novel VISTA blocking immunotherapy currently in a Phase 1/2 clinical trial in patients with advanced solid tumors, and a preclinical monoclonal antibody targeting CD27. For more information on Kineta, please visit , and follow Kineta on Twitter, LinkedIn and Facebook.

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This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. The use of words such as, but not limited to, “believe,” “expect,” “estimate,” “project,” “intend,” “future,” “potential,” “continue,” “may,” “might,” “plan,” “will,” “should,” “seek,” “anticipate,” or “could” and other similar words or expressions are intended to identify forward-looking statements. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based on Kineta’s current beliefs, expectations and assumptions regarding the future of Kineta’s business, future plans and strategies, clinical results and other future conditions. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. No representations or warranties (expressed or implied) are made about the accuracy of any such forward-looking statements.

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FOR FURTHER INFORMATION, PLEASE CONTACT:

Kineta, Inc.:

Jacques Bouchy

EVP Investor Relations & Business Development

Investor Relations:

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LifeSci Advisors, LLC

Source: Kineta, Inc.