Sarepta Therapeutics, Inc., a commercial-stage biopharmaceutical company, focuses on the discovery and development of RNA-targeted therapeutics, gene therapies, and other genetic therapeutic modalities for the treatment of rare diseases. It offers EXONDYS 51 injection to treat duchenne muscular dystrophy (duchenne) in patients with confirmed mutation of the dystrophin gene that is amenable to exon 51 skipping; VYONDYS 53 for the treatment of duchenne in patients with confirmed mutation of the dystrophin gene that is amenable to exon 53 skipping; AMONDYS 45 for the treatment of duchenne in patients with confirmed mutation of the dystrophin gene; and ELEVIDYS, an adeno-associated virus based gene therapy for the treatment of ambulatory pediatric patients aged 4 through 5 years with duchenne with a confirmed mutation in the duchenne gene. The company is also developing SRP-5051, a peptide conjugated PMO that binds exon 51 of dystrophin pre-mRNA; and SRP-9003, a limb-girdle muscular dystrophies gene therapy program. It has collaboration and license agreements with F. Hoffman-La Roche Ltd; Nationwide Children's Hospital; Genevant Sciences; University of Florida; Dyno Therapeutics; Hansa Biopharma; Duke University; Genethon; and StrideBio. The company was incorporated in 1980 and is headquartered in Cambridge, Massachusetts.

PTC Therapeutics, Inc., a biopharmaceutical company, focuses on the discovery, development, and commercialization of medicines to patients with rare disorders in the United States and internationally. The company offers Translarna and Emflaza for the treatment of Duchenne muscular dystrophy; Upstaza to treat aromatic l-amino acid decarboxylas (AADC) deficiency, a central nervous system disorder; Tegsedi and Waylivra for the treatment of rare diseases; and Evrysdi to treat spinal muscular atrophy (SMA) in adults and children. Its development pipeline products include Sepiapterin for the treatment of phenylketonuria; PTC518 splicing platform, which is being developed for the treatment of Huntington's disease; and ferroptosis and inflammation platforms, including vatiquinone to treat Friedreich ataxia and utreloxastat for the treatment of amyotrophic lateral sclerosis. The company distributes its products through third-party distributors. It has collaborations with F. Hoffman-La Roche Ltd, Hoffman-La Roche Inc., the SMA Foundation, National Taiwan University, Akcea Therapeutics, Inc., and Shiratori Pharmaceutical Co., Ltd. The company has license and collaboration agreement with Novartis Pharmaceuticals Corporation to develop PTC518 Huntington's disease program. PTC Therapeutics, Inc. was incorporated in 1998 and is headquartered in South Plainfield, New Jersey.

Beam Therapeutics Inc., a biotechnology company, engages in the development of precision genetic medicines for patients suffering from serious diseases in the United States. It develops BEAM-101 for the treatment of sickle cell disease or beta-thalassemia; and BEAM-302, a liver-targeting LNP formulation to treat severe alpha-1 antitrypsin deficiency; BEAM-201, an anti-CD7 CAR-T product candidate, which is in Phase 1/2 clinical trials for the treatment of refractory T-cell acute lymphoblastic leukemia/T cell lymphoblastic lymphoma; and BEAM-301, a liver-targeting LNP formulation for the treatment of glycogen storage disease 1a. The company has research collaboration agreement with Pfizer Inc., focus on in vivo base editing programs for targets rare genetic diseases of the liver, muscle, and central nervous system; Apellis Pharmaceuticals to conduct preclinical research on target specific genes within the complement system in various organs, including the eye, liver, and brain; Verve Therapeutics, Inc., for cardiovascular disease treatments; Sana Biotechnology, Inc., to research, develop, and commercialize rights to CRISPR Cas12b for cell therapy programs; and Orbital Therapeutics design RNA for the prevention, treatment or diagnosis of human disease. Beam Therapeutics Inc. was incorporated in 2017 and is based in Cambridge, Massachusetts.

Dyne Therapeutics, Inc., a clinical-stage muscle disease company, operates as a biotechnology company that focuses on advancing therapeutics for genetically driven muscle diseases in the United States. It is developing a portfolio of muscle disease therapeutics, including programs in myotonic dystrophy type 1; duchenne muscular dystrophy; and facioscapulohumeral dystrophy, as well as rare skeletal muscle, and cardiac and metabolic muscle diseases using its FORCE platform that delivers disease-modifying therapeutics. Dyne Therapeutics, Inc. was incorporated in 2017 and is headquartered in Waltham, Massachusetts.

Capricor Therapeutics, Inc., a clinical-stage biotechnology company, focuses on the development of transformative cell and exosome-based therapeutics for the treatment of duchenne muscular dystrophy (DMD) and other diseases with unmet medical needs. The company's lead candidate, CAP-1002, an allogeneic cardiac-derived cell therapy, which has completed phase 3 clinical trial for the treatment of patients with late-stage Duchenne muscular dystrophy (DMD). It also focused on developing StealthX, an engineered exosome-based vaccine candidate, under phase 1 clinical study for a range of therapeutic applications, including targeted RNA, protein, and small molecule therapeutics to treat or prevent a variety of diseases. In addition, the company develops CAP-2003, under pre-clinical development for the treatment of trauma related injuries and conditions. It has collaboration and distribution agreement with Nippon Shinyaku Co. Ltd., collaboration agreement with National Institute of Allergy and Infectious Diseases, license agreements with the Johns Hopkins University and Cedars-Sinai Medical Center, as well as cell line license agreement with Life Technologies Corporation. The company was founded in 2005 and is headquartered in San Diego, California.

Stoke Therapeutics, Inc., an early-stage biopharmaceutical company, develops medicines to treat the underlying causes of severe genetic diseases in the United States. The company utilizes its proprietary targeted augmentation of nuclear gene output to develop antisense oligonucleotides to selectively restore protein levels. Its lead clinical candidate is STK-002, which is in preclinical stage for the treatment of autosomal dominant optic atrophy. The company also develops STK-001, which is in phase I/II clinical trial to treat Dravet syndrome; and programs focused on multiple targets, including haploinsufficiency diseases of the central nervous system and eye. The company has a license and collaboration agreement with Acadia Pharmaceuticals Inc. for the discovery, development, and commercialization of novel RNA-based medicines for the treatment of severe and rare genetic neurodevelopmental diseases of the central nervous system. The company was formerly known as ASOthera Pharmaceuticals, Inc. and changed its name to Stoke Therapeutics, Inc. in May 2016. Stoke Therapeutics, Inc. was incorporated in 2014 and is headquartered in Bedford, Massachusetts.

Fulcrum Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on developing products for improving the lives of patients with genetically defined diseases in the areas of high unmet medical need in the United States. Its product candidates are losmapimod, a small molecule for the treatment of facioscapulohumeral muscular dystrophy is under phase III clinical trial; and pociredir, a fetal hemoglobin inducer for the treatment of sickle cell disease and beta-thalassemia is under phase I clinical trial. The company is also discovering drug targets for the treatments of rare neuromuscular, muscular, central nervous system, and hematologic disorders, as well as cardiomyopathies and pulmonary diseases. It has collaboration and license agreement with Acceleron Pharma Inc. to identify biological targets to modulate specific pathways associated with a targeted indication within the pulmonary disease space; MyoKardia, Inc. to discover and develop therapies for the treatment of genetic cardiomyopathies; and Sanofi for the development and commercialization of losmapimod, an oral small molecule being investigated for the treatment of facioscapulohumeral muscular dystrophy. Fulcrum Therapeutics, Inc. was Incorporated in 2015 and is headquartered in Cambridge, Massachusetts.

Sangamo Therapeutics, Inc., a clinical-stage genomic medicine company, focuses on translating science into medicines that transform the lives of patients and families afflicted with serious diseases in the United States. The company's clinical-stage product candidates are ST-920, a gene therapy product candidate, which is in Phase 1/2 clinical study for the treatment of Fabry disease; TX200, a chimeric antigen receptor engineered regulatory T cell (CAR-Treg) therapy product candidate that is in Phase 1/2 clinical study for the prevention of immune-mediated rejection in HLA-A2 mismatched kidney transplantation; SB-525, a gene therapy product candidate, which is in Phase 3 clinical trial for the treatment of moderately severe to severe hemophilia A; BIVV003, a zinc finger nuclease gene-edited cell therapy product candidate that is in Phase 1/2 PRECIZN-1 clinical study for the treatment of sickle cell disease. Its preclinical development products focus on CAR-Treg cell therapies for autoimmune disorders and genome engineering for neurological diseases. Sangamo Therapeutics, Inc. has collaborative and strategic partnerships with Biogen MA, Inc.; Kite Pharma, Inc.; Pfizer Inc.; Sanofi S.A.; Novartis Institutes for BioMedical Research, Inc.; Shire International GmbH; Dow AgroSciences LLC; Sigma-Aldrich Corporation; Genentech, Inc.; Open Monoclonal Technology, Inc.; and California Institute for Regenerative Medicine. The company was formerly known as Sangamo BioSciences, Inc. and changed its name to Sangamo Therapeutics, Inc. in January 2017. Sangamo Therapeutics, Inc. was incorporated in 1995 and is headquartered in Richmond, California.