cabaletta bio, inc., a clinical-stage biotechnology company, focuses on the discovery and development of engineered t cell therapies for patients with b cell-mediated autoimmune diseases. its proprietary technology utilizes chimeric autoantibody receptor (caar) t cells that are designed to selectively bind and eliminate b cells, which produce disease-causing autoantibodies or pathogenic b cells. the company's lead product candidate is dsg3-caart, which is in phase i clinical trial for the treatment of mucosal pemphigus vulgaris, an autoimmune blistering skin disease, and hemophilia a with factor viii alloantibodies. its product candidate pipeline also include musk-caart, a preclinical stage product to treat a subset of patients with myasthenia gravis; fviii-caart, a discovery stage product to treat a subset of patients with hemophilia a; and dsg3/1-caart, a discovery stage product for the treatment of mucocutaneous pemphigus vulgaris. cabaletta bio, inc. has a collaboration with the un