Cytokinetics, Incorporated, a late-stage biopharmaceutical company, focuses on discovering, developing, and commercializing muscle activators and inhibitors as potential treatments for debilitating diseases. It develops small molecule drug candidates primarily engineered to impact muscle function and contractility. The company's drug candidates include omecamtiv mecarbil, a novel cardiac myosin activator that is in Phase III clinical trial in patients with heart failure. It also develops CK-136, a novel cardiac troponin activator that is in Phase I clinical trial; CK-586, a small molecule cardiac myosin inhibitor, that is in Phase I clinical trial; and aficamten, a novel cardiac myosin inhibitor, which is in Phase III clinical trial for the treatment of patients with symptomatic obstructive hypertrophic cardiomyopathy. The company has a strategic alliance with Ji Xing Pharmaceuticals Limited; and a collaboration and license agreement for the development and commercialization of aficamten in Japan for the treatment of patients with obstructive and non-obstructive hypertrophic cardiomyopathy. Cytokinetics, Incorporated was incorporated in 1997 and is headquartered in South San Francisco, California.

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.

Milestone Pharmaceuticals Inc., a biopharmaceutical company, focuses on the development and commercialization of cardiovascular medicines. The company's lead product candidate is etripamil, a novel and potent calcium channel blocker, which is in Phase III clinical trial for the treatment of paroxysmal supraventricular tachycardia in the United States and Canada; and Phase II clinical trial for the treatment of atrial fibrillation and rapid ventricular rate. It has a license and collaboration agreement with Ji Xing Pharmaceuticals to develop and commercialize etripamil prophylactic and therapeutic uses in humans, as well as with the Montreal Heart Institute, the WCN network, and other research centers. The company was incorporated in 2003 and is headquartered in Montréal, Canada.

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.

Cadrenal Therapeutics, Inc. operates as a clinical development biopharmaceutical company. The company focuses on developing Tecarfarin, a novel oral and reversible anticoagulant to prevent heart attacks, strokes, and deaths due to blood clots in patients with rare cardiovascular conditions requiring chronic anticoagulation, such as patients with left ventricular assist devices, end-stage kidney disease, atrial fibrillation, and thrombotic anti-phospholipid syndrome. Cadrenal Therapeutics, Inc. was incorporated in 2022 and is headquartered in Ponte Vedra, Florida.

BioCardia, Inc., a clinical-stage regenerative medicine company, develops cellular and cell-derived therapeutics for cardiovascular and pulmonary diseases in the United States. Its lead product candidate is CardiAMP, an autologous mononuclear cell therapy system in Phase III clinical trial for the treatment of ischemic heart failure with reduced ejection fraction and refractory angina resulting from chronic myocardial ischemia. The company is also developing an allogeneic cells therapy platform, which is an investigational culture expanded bone marrow derived mesenchymal cell therapy in Phase I/II trial to treat ischemic heart failure and acute respiratory distress syndrome. In addition, it offers the Helix biotherapeutic delivery system for minimally invasive targeted delivery of biologic agents to the heart; and Morph deflectable guides and sheaths. The company has collaboration agreements with CellProthera in the development of ProtheraCytes, which is currently under Phase II trial for the treatment of acute myocardial infarction. BioCardia, Inc. is based in Sunnyvale, California.

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.

Windtree Therapeutics, Inc., a biotechnology company, focuses on the development of therapeutics for the treatment of acute cardiovascular diseases. The company's lead product candidate is istaroxime, which is in Phase 2b clinical trial for the treatment of acute decompensated heart failure, as well as for the treatment of early cardiogenic shock. It also develops AEROSURF, an aerosolized KL4 surfactant that is in Phase 2b clinical trial to treat respiratory distress syndrome in premature infants; Surfaxin, a lyophilized KL4 surfactant, which is in Phase 2a clinical trial for the treatment of lung injury resulting from COVID-19; Rostafuroxin that is in Phase 2b clinical trial for the treatment of genetically associated hypertension; and oral and intravenous SERCA2a activator, which is in preclinical trial for the treatment of chronic and acute heart failure. In addition, it is developing aPKCi Inhibitor for the treatment of cutaneous malignancies and solid tumors that is in preclinical trials. Windtree Therapeutics, Inc. has a collaboration with Universita degli Studi di Milano-Bicocca for the discovery and development of new SERCA2a compounds for the treatment of chronic and acute human heart failure; a strategic alliance with Laboratorios del Dr. Esteve, S.A. for the development, marketing, and sale of a portfolio of potential KL4 surfactant products; license, development and commercialization agreement with Lee's Pharmaceutical (HK) Ltd. and Zhaoke Pharmaceutical (Hefei) Co. Ltd.; license agreement with Philip Morris USA, Inc. and Johnson & Johnson; and collaboration with Battelle Memorial Institute for development of its ADS for use in its phase III program. The company was formerly known as Discovery Laboratories, Inc. and changed its name to Windtree Therapeutics, Inc. in April 2016. The company was founded in 1992 and is headquartered in Warrington, Pennsylvania.