Cabaletta Bio Inc is a clinical-stage biotechnology company focused on the discovery and development of engineered T cell therapies for B cell-mediated autoimmune diseases. Its technology uses chimeric autoantibody receptor T cells that are designed to selectively bind and eliminate B cells that produce disease-causing autoantibodies while sparing normal B cells. The firm offers preclinical development for the treatment of muscle-specific kinase myasthenia gravis, mucocutaneous PV, and Hemophilia A with factor VIII, or FVIII, alloantibodies. Its products comprise of DSG3/1-CAART, MuSK-CAART, and FVIII-CAART. The firm's initial focus is on Pemphigus Vulgaris, which is an autoimmune blistering skin disease.