(Kineta) A Fully Human anti-VISTA Antibody as a Promising Therapy Against Poorly Immunogenic Tumors

anti-hVISTA against poorly immunogenic tumors

April 10, 2021

Background

  • VISTA (V-domain Ig Suppressor of T cell Activation) is a unique B7 family member, mainly expressed on myeloid cells, neutrophils, NK cells and Treg
  • VISTA is highly expressed on MDSC and Treg in the TME and play an important role in immune modulation
  • VISTA is a negative regulator that directly suppresses T-cell activation and proliferation
  • High VISTA expression correlates with poor survival in cancer patients
  • VISTA is a unique Immune checkpoint inhibitor for tumor immunotherapy

Conclusion

  • 107 fully human ScFv anti-VISTA antibodies were generated and analyzed
  • Kineta’s anti-VISTA lead antibody is highly specific
  • Kineta’s anti-VISTA lead antibody activates monocytes, and this activation is NK dependent
  • Kineta’s anti-VISTA lead antibody reverse MDSC suppression of T cells
  • Kineta’s anti-human VISTA lead antibody induces strong anti-tumor response as a single agent or in combo-therapies with anti-PDL1 or anti-CTLA4 in different hard to treat tumor models
  • KVA 12.1 is our lead antibody for IND enabling studies.

Related products

Catalogue product

hVISTA

The hVISTA mouse enables the in vivo efficacy assessment and profiling of immuno-oncology agents targeting the human immune checkpoint VISTA in fully immunocompetent mice.

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