In autoimmune diseases such as inflammatory bowel disease (IBD), the function of regulatory CD8 T cells (CD8 Treg) is compromised, in part due to the expression of inhibitory KIR receptors (KIR2DL1/2/3) and insufficient inducible T-cell co-stimulator (ICOS) signaling. Mozart Therapeutics Inc. has discovered MTX-201, a new bispecific antibody targeting inhibitory KIR and ICOS that are co-expressed by CD8 Tregs.
MTX-101 (Mozart Therapeutics Inc.) is a bispecific CD8 Treg modulator that targets CD8 and the KIR2DL family, including KIR2DL1, KIR2DL2 and KIR2DL3, and is being developed for the treatment of CD4-driven autoimmunity and restoring immune balance.
Mozart Therapeutics Inc. has reported preclinical pharmacologic and tolerability data for MTX-101, a bispecific CD8 regulatory T-cell (Treg) modulator targeting inhibitory KIR2DL(1/2/3) and CD8 expressed on CD8 Tregs. The autoimmune checkpoint inhibitor aims to restore CD8 Treg function, acting early in the autoimmune disease process to halt downstream inflammation and prevent further complication. The initial therapeutic focus for MTX-101 is gastrointestinal autoimmune disorders.
Mozart Therapeutics Inc. CEO Katie Fanning said the firm’s $55 million series A financing will allow the filing of an IND, probably in early 2024, for a prospect in celiac disease. Founded in July 2020, Seattle-based Mozart is based on research into the CD8 T-cell regulatory network, which has been found to play an important role in surveillance, recognition and elimination of inappropriately activated autoreactive and pathogenic immune cells.
