(Anaveon) ANV600 is a potent, cis-signaling, IL-2Rβ/γ directed IL-2 which efficiently expands intratumoral stem-like CD8 T cells

PD-1 & strong tumor growth inhibition

April 14, 2023


ANV600 is a novel PD-1 targeted, IL-2Rβ/γ directed IL-2

ANV600 consists of a proprietary PD-1 binding moiety and an IL-2Rβ/γ directed interleukin-2/anti-IL-2 fusion protein, thus targeting the cytokine to PD-1 expressing T cells. The IL-2 agonist arm of ANV600 includes an anti-IL-2 antibody with high affinity to the IL-2Rα binding domain of IL-2. The cytokine is directly fused to the light chain of the antibody through a peptide linker, allowing ANV600 to present IL-2 to the dimeric β/γ IL-2 receptor on CD8 PD-1+ T cells, while sterically excluding binding to the high affinity trimeric α/β/γ IL-2 receptor.

In the tumor microenvironment, the pool of PD-1+ T cells is primarily composed of tumor antigen experienced cells. ANV600 potently and selectively proliferates tumor specific PD-1+ stem-like CD8 T cells and effector cells, and markedly reduces tumor growth in poorly immunogenic syngeneic mouse tumor models.

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