IL-7 receptor alpha

Class

Anti-IL-7Ralpha monoclonal antibody

Interleukin-7 receptor alpha (IL-7Rα, also called CD127) is a cell-surface protein that pairs with the common gamma chain to form the receptor for interleukin-7, a cytokine produced by stromal and epithelial cells. Signaling through this receptor is essential for the development, survival, and homeostatic maintenance of T lymphocytes, particularly naive and memory T cells, which depend on continuous low-level IL-7 signaling to persist in the body. In autoimmune and chronic inflammatory diseases, self-reactive or pathogenic T cell populations rely on this same survival pathway to expand and persist. Monoclonal antibodies directed against IL-7Rα block the receptor, preventing IL-7 from engaging it and thereby reducing survival signals to these T cell populations. This offers a rationale distinct from broadly cytotoxic immunosuppression: rather than eliminating T cells indiscriminately, IL-7Rα blockade aims to selectively contract populations most dependent on IL-7-driven maintenance, while sparing other arms of immunity less reliant on this axis. This mechanism is being explored across a range of T cell-mediated autoimmune conditions where reducing the pool of pathogenic memory and effector T cells is thought to have therapeutic value.