On May 17, 2023 IN8bio, Inc. (Nasdaq: INAB), a leading clinical-stage biopharmaceutical company focused on innovative gamma-delta T cell therapies, reported positive preclinical data underscoring the potential of its DeltEx Gamma-Delta T cells to target and kill ovarian cancer (Press release, In8bio, MAY 17, 2023, View Source [SID1234631807]). The data were featured in a poster presentation at the American Society of Cell & Gene Therapy (ASGCT) (Free ASGCT Whitepaper) 26th Annual Meeting and showed that DeltEx Gamma-Delta T cells were able to target and kill ovarian cancer cells, even in platinum-resistant and treatment-resistant cell lines.

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"These findings highlight the synergy of combining gamma-delta T cells with chemotherapy to target solid tumors, even outside the brain," said William Ho, CEO and co-founder of IN8bio. "We are encouraged by these data that suggest that a combination using DeltEx Gamma-Delta T cells may provide a promising new approach to treating patients with ovarian cancer."

IN8bio’s DeltEx Drug Resistance Immunotherapy, or DeltEx DRI, gamma-delta T cells are engineered to be more effective at killing cancer cells. These cells are designed to be resistant to the killing effects of chemotherapy, allowing them to remain functional and be used concurrently in combinations to create a strong synergistic tumor killing effect. The preclinical data demonstrates that temozolomide (TMZ), an alkylating agent that creates DNA double-stranded breaks, can work synergistically in combination with poly ADP-ribose polymerase inhibitors (PARPi) to significantly increase NKG2D ligand (NKG2D-L) expression. NKG2D-L are proteins that make cancer cells more visible to the immune system, particularly to gamma-delta T cells, and resulted in greater killing of ovarian cancer cells, even in platinum-resistant and treatment-resistant ovarian cell lines.

Lawrence Lamb, Ph.D., co-founder and Chief Scientific Officer of IN8bio, expressed great optimism about the broad implications of this research and approach, "These data serve as a compelling proof-of-concept, demonstrating how gamma-delta T cell biology could seek out and eradicate tumor cells across a broad range of challenging cancer indications." In addition, "We are encouraged by these results and look forward to evaluating the applicability of INB-400 in ovarian cancer and other solid tumor targets as soon as possible."

About INB-400

INB-400 is IN8bio’s DeltEx chemotherapy resistant autologous and allogeneic drug resistant immunotherapy (DRI) technology. Allogeneic INB-400 will expand the application of DRI gamma-delta T cells into other solid tumor types through the development of allogeneic or "off-the-shelf" DeltEx DRI technology.