AVROBIO, Inc., a clinical-stage gene therapy company, develops hematopoietic stem cell gene therapies to treat rare diseases in the United States. Its gene therapies employ hematopoietic stem cells that are harvested from the patient and then modified with a lentiviral vector to insert the equivalent of a functional copy of the gene that is mutated in the target disease. The company's pipeline includes AVR-RD-02, which is in phase 1/2 clinical trial for the treatment of Gaucher disease type 1 and 3; AVR-RD-01, which is in phase 2 clinical trials for the treatment of Fabry disease; and AVR-RD-03 that is in preclinical stage for the treatment of Pompe disease. The company was incorporated in 2015 and is headquartered in Cambridge, Massachusetts.