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.

Rapport Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on the discovery and development of small molecule medicines for patients suffering from central nervous system (CNS) disorders. Its lead product candidate is receptor associated protein (RAP)-219, an investigational small molecule that is designed to inhibit TARPy8-containing AMPARs with picomolar affinity for the treatment of focal epilepsy and other CNS disorders, including peripheral neuropathic pain and bipolar disorder. The company also develops RAP-199, a TARPy8 targeted molecule with differentiated chemical and pharmacokinetic properties; and nicotinic acetylcholine receptor (nAChR) programs, such as a6 nAChR to treat chronic pain and a9a10 nAChR for the treatment of hearing disorders. Rapport Therapeutics, Inc. was incorporated in 2022 and is headquartered in Boston, 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.

Editas Medicine, Inc., a clinical stage genome editing company, focuses on developing transformative genomic medicines to treat a range of serious diseases. It develops a proprietary gene editing platform based on CRISPR technology. The company develops EDIT-101, which is in Phase 1/2 BRILLIANCE trial for Leber Congenital Amaurosis; and reni-cel, a clinical development gene-edited medicine to treat sickle cell disease and transfusion-dependent beta-thalassemia. In addition, the company is developing alpha-beta T cells for solid and liquid tumors; and gamma delta T cell therapies to treat cancer. It has a research collaboration with Juno Therapeutics, Inc. to develop engineered T cells for cancer; collaboration and nonexclusive license agreement with Genevant Sciences to develop Novel mRNA-LNP gene editing therapeuticsand strategic alliance and option agreement with Allergan Pharmaceuticals International Limited, as well as collaboration with Bristol Myers Squibb for research and development of alpha-beta T cell medicines for the treatment of cancer and autoimmune diseases. The company was formerly known as Gengine, Inc. and changed its name to Editas Medicine, Inc. in November 2013. Editas Medicine, Inc. was incorporated in 2013 and is based in Cambridge, Massachusetts.

Neumora Therapeutics, Inc., a clinical-stage biopharmaceutical company, engages in developing therapeutic treatments for brain diseases, neuropsychiatric disorders, and neurodegenerative diseases. The company develops navacaprant (NMRA-140), a novel once-daily oral kappa opioid receptor antagonist, which is in phase 3 clinical trials for the treatment of major depressive disorder. It also develops NMRA-511 that is in phase 1 clinical trials in patients with agitation associated with dementia due to Alzheimer's disease; and NMRA-266, which is in the phase 1 clinical trial for the treatment of schizophrenia and other neuropsychiatric disorders. In addition, its preclinical phase product includes NMRA-NMDA for the treatment of schizophrenia; NMRA-CK1d, a CK1d inhibitor program for the treatment of amyotrophic lateral sclerosis; NMRA-NLRP3 for the treatment of certain neurodegenerative conditions; and NMRA-GCase for the treatment of Parkinson's disease. The company was formerly known as RBNC Therapeutics, Inc. and changed its name to Neumora Therapeutics, Inc. in October 2021. Neumora Therapeutics, Inc. was incorporated in 2019 and is headquartered in Watertown, Massachusetts.

C4 Therapeutics, Inc., a clinical-stage biopharmaceutical company, develops novel therapeutic candidates to degrade disease-causing proteins for the treatment of cancer, neurodegenerative conditions, and other diseases. Its lead product candidate is CFT7455, an orally bioavailable MonoDAC degrader of protein that is in Phase 1/2 trial targeting IKZF1 and IKZF3 for multiple myeloma and non-Hodgkin lymphomas, including peripheral T-cell lymphoma and mantle cell lymphoma, currently under Phase 1/2 clinical trials. The company is also developing CFT1946, an orally bioavailable BiDAC degrader targeting V600X mutant BRAF to treat melanoma, non-small cell lung cancer (NSCLC), colorectal cancer, and other solid malignancies, currently under Phase 1/2 clinical trials; and CFT8919, an orally bioavailable, allosteric, and mutant-selective BiDAC degrader of epidermal growth factor receptor, or EGFR, with an L858R mutation in NSCLC. It has strategic collaborations with F. Hoffmann-La Roche Ltd and Hoffmann-La Roche Inc.; Biogen MA, Inc.; Betta Pharmaceuticals, Co., Ltd.; and Merck Sharp & Dohme, LLC, as well as Calico Life Sciences LLC. The company was incorporated in 2015 and is headquartered in Watertown, Massachusetts.

Cyclerion Therapeutics, Inc., a biopharmaceutical company, develops treatments for serious diseases. It is developing Olinciguat, an orally administered vascular soluble guanylate cyclase (sGC) stimulator, which is in Phase 2 clinical trial to out-license for cardiovascular diseases; and Praliciguat, a systemic sGC stimulator that is licensed to Akebia Therapeutics, Inc. for the treatment of rare kidney disease. The company was incorporated in 2018 and is headquartered in Cambridge, Massachusetts.

Syros Pharmaceuticals, Inc., a biopharmaceutical company, focuses on the development of treatment for hematologic malignancies. The company's lead product candidates are Tamibarotene, a selective retinoic acid receptor alpha agonist, which is in Phase III clinical trial for genomically defined subset of patients with myelodysplastic syndrome and Phase II clinical trial for patients with acute myeloid leukemia; SY-2101, a novel oral form of arsenic trioxide for treating patients with acute promyelocytic leukemia; and SY-5609, a cyclin-dependent kinase 7 inhibitor, which is in a Phase I clinical trial in patients with select advanced solid tumors. The company was formerly known as LS22, Inc. and changed its name to Syros Pharmaceuticals, Inc. in August 2012. Syros Pharmaceuticals, Inc. was incorporated in 2011 and is headquartered in Cambridge, Massachusetts.