Freeline Therapeutics Holdings plc is a biopharmaceutical company, currently in its clinical development phase, focused on creating groundbreaking gene therapies. These innovative treatments leverage adeno-associated virus (AAV) vector technology to tackle inherited, systemic, and severely debilitating genetic conditions. The company's leading therapeutic candidate, verbrinacogene setparvovec (FLT180a), is presently undergoing Phase 1/2 clinical trials for the management of hemophilia B in adult males.