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.

MeiraGTx Holdings plc, a clinical stage gene therapy company, focusing on developing treatments for patients with serious diseases. The company develops various therapies for ocular diseases, including inherited retinal diseases and large degenerative ocular diseases, neurodegenerative diseases, and xerostomia. Its programs in clinical development include Phase I/II clinical stage programs in achromatopsia, X-linked retinitis pigmentosa, and RPE65-deficiency; Phase I clinical trials for radiation-induced xerostomia; and Parkinson's program that has completed a Phase II trial. It has a research collaboration agreement with Janssen Pharmaceuticals, Inc. for the research, development, and commercialization of gene therapies for the treatment of inherited retinal disease. The company was incorporated in 2015 and is based in New York, New York.

Design Therapeutics, Inc. a biopharmaceutical company, researches, designs, develops, and commercializes small molecule therapeutic drugs for the treatment of genetic diseases in the United States. The company utilizes its GeneTAC platform to design and develop therapeutic candidates for inherited diseases caused by nucleotide repeat expansion. Its lead product candidates for potentially disease-modifying treatment comprises Friedreich Ataxia, a monogenic, autosomal recessive, progressive multi-system disease that affects organ systems dependent on mitochondrial function that brings to neurological, cardiac, and metabolic dysfunction; Myotonic Dystrophy Type-1, a dominantly-inherited, monogenic progressive neuromuscular disease affecting skeletal muscle, heart, brain, and other organs; Fuchs Endothelial Corneal Dystrophy, a genetic eye disease characterized by bilateral degeneration of corneal endothelial cells and progressive loss of vision; and Huntington's Disease, a dominantly inherited, monogenic neurodegenerative disease characterized by movement, cognitive, and psychiatric disorders. Design Therapeutics, Inc. was incorporated in 2017 and is headquartered in Carlsbad, California.

Neurogene Inc., a biotechnology company, develops genetic medicines for rare neurological diseases. The company's product candidates include NGN-401 which is packaged in an adeno-associated virus 9 that is in Phase 1/2 clinical trial for the treatment of Rett syndrome; and NGN-101, a conventional gene therapy candidate that is in Phase 1/2 clinical trial to treat CLN5 Batten disease. It has a license agreement with The University of North Carolina, the University of Edinburgh, Virovek, Inc., and Sigma-Aldrich Co. LLC. The company is headquartered in New York, New York.

Voyager Therapeutics, Inc., a biotechnology company, focuses on the treatment of gene therapy and neurology diseases. The company's lead clinical candidate is VY-TAU01, an anti-tau antibody program for the treatment of alzheimer's disease. Its product pipeline includes superoxide dismutase 1 silencing gene therapy, which is in preclinical trial for the treatment of amyotrophic lateral sclerosis; tau silencing gene therapy, which is in preclinical trial for the treatment of alzheimer's disease; and vectorized anti-amyloid antibody, a gene therapy targeting anti-amyloid for the treatment of alzheimer's disease and is in preclinical trial. In addition, the company develops VY-FXN01, which is in preclinical trial to treat friedreich's ataxia; and GBA1 gene replacement to treat parkinson's disease and is in preclinical trial. Further, it provides research program for the treatment of Huntington's disease. The company has collaboration and license agreements with Alexion; AstraZeneca Rare Disease; Novartis Pharma AG; Neurocrine Biosciences, Inc; and Sangamo Therapeutics, Inc. Voyager Therapeutics, Inc. was incorporated in 2013 and is headquartered in Lexington, Massachusetts.

Solid Biosciences Inc., a life science company, develops therapies for neuromuscular and cardiac diseases in the United States. The company's lead product candidate is SGT-003, a gene transfer candidate for the treatment of Duchenne muscular dystrophy; and SGT-501 to treat Catecholaminergic polymorphic ventricular tachycardia. It is also developing AVB-401 for the treatment of BAG3-mediated dilated cardiomyopathy; SGT-601 to treat a rare cardiac disease characterized by mutations in the gene that codes for cardiac troponin T protein, which helps coordinate contraction of the heart muscle; SGT-701 for treatment of rare inherited disease characterized by mutations in the RBM20 gene, a cardiac splicing factor that regulates alternative splicing, and codes for RNA binding motif protein 20; and AVB-202-TT to treat Friedreich's ataxia, as well as other drugs for the treatment of cardiac and other diseases. In addition, the company is involved in developing platform technologies, including capsid libraries and dual gene expression, a technology for packaging multiple transgenes into one capsid. The company has collaboration and license agreement with Ultragenyx Pharmaceutical Inc. to develop and commercialize new gene therapies for Duchenne; and a license agreement with the University of Washington, University of Missouri, and University of Florida. Solid Biosciences Inc. was incorporated in 2013 and is headquartered in Charlestown, Massachusetts.

Tenaya Therapeutics, Inc., a biotechnology company, discovers, develops, and delivers therapies for heart disease in the United States. It develops its products through gene editing, cellular regeneration, and gene addition. The company is developing TN-201, a gene therapy for myosin binding protein C3-associated hypertrophic cardiomyopathy which is in phase 1 clinical trial; TN-301, a small molecule for heart failure with preserved ejection fraction which is in phase 1 clinical trial; and TN-401, a gene therapy for plakophilin 2-associated arrhythmogenic right ventricular cardiomyopathy which is in preclinical stage. It also develops an adeno-associated virus-based gene therapy designed to deliver the dworf gene for patient with dilated cardiomyopathy; and reprogramming program for heart failure due to prior myocardial infarction. Tenaya Therapeutics, Inc. was incorporated in 2016 and is headquartered in South San Francisco, California.

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.