Kineta Presents Phase 1/2 Clinical Trial Design of KVA12.1 at the Society for Immunotherapy of Cancer (SITC) 36th Annual Meeting

SEATTLE, Nov. 29, 2021 /PRNewswire/ — Kineta, Inc., a clinical stage biotechnology company focused on the development of novel immunotherapies in oncology, announced today a presentation describing the Phase 1/2 trial design supporting KVA12.1 for the potential treatment of difficult-to-treat solid tumors at the Society for Immunotherapy of Cancer (SITC) 36th Anniversary Annual Meeting. Thierry Guillaudeux, PhD, Senior Vice President Immuno-oncology at Kineta, presented a poster outlining the first-in-human clinical trial design KVA 12.1, a novel fully human anti-VISTA antibody, in monotherapy and in combination with an anti-PD1 antibody.   

"Our fully human anti-VISTA antibody, KVA12.1, which binds to a unique epitope has been optimized to reduce the potential risks of severe inflammation. It demonstrates excellent clinical characteristics including an extended pharmacokinetic (PK) profile," said Thierry Guillaudeux, PhD, Senior Vice President Immuno-oncology at Kineta. "We are encouraged by the exceptional preclinical results of KVA12.1 and are eager to enter the clinic with KVA12.1 in the third quarter of 2022."

The Phase 1/2 study will be a multicenter, open label, dose escalation and dose expansion study of intravenous infusion of KVA12.1 as a monotherapy and in combination with a fixed dose of an anti-PD1 antibody in patients with advanced refractory or metastatic solid tumors. 

Study objectives detailed from the SITC poster presentation:

  • Primary objective: Evaluate the safety, tolerability, Dose Limiting Toxicity (DLT), Maximum Tolerated Dose (MTD) and Identify the Recommended Phase 2 Dose (RP2D) of VISTA-Mab when administered alone and in combination with an anti-PD1 antibody.
  • Secondary objectives: Further describe i) the PK of KVA12.1; ii) VISTA-Receptor Occupancy; and iii) the anti-tumor activity of KVA12.1 (alone and in combination).

Presentation Details:
Title: KVA 12.1 a novel fully human anti-VISTA antibody clinical trial design in monotherapy and in combination with an anti-PD1 antibody 
Date Presented: November 12-13, 2021
Presenter: Thierry Guillaudeux, PhD
Poster: Click on the link below to view the poster:

VISTA Publications – Poster Presentation at SITC 2021

KVA12.1 is a fully human, optimized IgG1 monoclonal antibody (mAb) that was designed to bind to VISTA through a unique epitope. KVA12.1 drives strong antitumor immune cell activation:

  • Increases inflammatory monocyte differentiation and activation
  • Increases HLA-dependent T cell activation
  • Reduces MDSC-mediated T cell suppression

In preclinical models, KVA12.1 demonstrates strong single agent efficacy in poorly immunogenic "cold tumors" and complementary efficacy when dosed in combination with immune checkpoint inhibitors (ICIs) like PD-1 or CTLA-4. It is well-tolerated with no change in IL6 or TNFα levels, which are responsible for cytokine release syndrome (CRS), in toxicology studies.  KVA12.1 is being developed as an intravenous infusion.

KVA12.1 may be an effective immunotherapy for many types of cancer patients including non-small cell lung cancer (NSCLC), colorectal (CRC), renal cell carcinoma (RCC), head and neck squamous cell carcinoma (HNSCC), and ovarian (OC) cancers.

Kineta is a clinical stage biotechnology company with a mission to develop next generation immunotherapies that transform patients’ lives. We have leveraged our expertise in innate immunity to develop first or best-in-class immunotherapies that address the major challenges with current cancer therapy. For more information on Kineta visit our website,, and follow us on Twitter, LinkedIn and Facebook.

NOTICE: This document contains certain forward-looking statements, including without limitation statements regarding Kineta’s plans for pre-clinical and clinical studies, regulatory filings, investor returns and anticipated drug effects in human subjects. You are cautioned that such forward-looking statements are not guarantees of future performance and involve risks and uncertainties inherent in Kineta’s business which could significantly affect expected results, including without limitation progress of drug development, ability to raise capital to fund drug development, clinical testing and regulatory approval, developments in raw material and personnel costs, and legislative, fiscal, and other regulatory measures. All forward-looking statements are qualified in their entirety by this cautionary statement, and Kineta undertakes no obligation to revise or update any forward-looking statement to reflect events or circumstances after the issuance of this press release.

Jacques Bouchy
(206) 378-0400

SOURCE Kineta, Inc.