Amlitelimab - Model OX40L - SAR445229 (Formerly KY1005) - Human Monoclonal Antibody

Amlitelimab SAR445229 (formerly KY1005) is a human monoclonal antibody that targets OX40L, a key regulator of the immune system. Amlitelimab is designed to rebalance the immune system by blocking inappropriate activation and proliferation of ‘pro-inflammatory’ effector T cells and promoting expansion of ‘anti-inflammatory’ regulatory T cells, without broad suppression of the immune system. We believe this mechanism-of-action means Amlitelimab could be applicable to a range of autoimmune and inflammatory diseases. In our Phase 1 clinical trial in healthy volunteers, Amlitelimab was able to block T cell-driven skin inflammation while being well tolerated. We believe the immune-modulating mechanism of Amlitelimab has broad potential therapeutic application in multiple diseases caused by immune dysregulation.