4D Molecular Therapeutics, Inc. is a clinical-stage gene therapy company that engineers therapeutic agents by leveraging its proprietary adeno-associated virus (AAV) vector technology. The company's developmental efforts are concentrated across a trio of therapeutic fields: ophthalmology (eye conditions), cardiology (heart ailments), and pulmonology (respiratory disorders). Within its active pipeline, three specific product candidates have advanced into clinical trial phases, all currently undergoing Phase 1/2 clinical assessment: 4D-125 is being evaluated for the treatment of X-linked retinitis pigmentosa. 4D-110 targets choroideremia. 4D-310 is focused on addressing Fabry disease.