Karos Pharmaceuticals is a privately held, clinical-stage biopharmaceutical company advancing innovative medicines for patients living with rare diseases, including fibrotic, inflammatory, and metabolic diseases. Karos' lead clinical candidate, KAR5585, is completing Phase 1 testing for the treatment of pulmonary arterial hypertension (PAH). KAR5585 also is being studied in preclinical research for the treatment of pulmonary hypertension unrelated to PAH. A next-generation TPH1 inhibitor also is being advanced for the treatment of carcinoid syndrome. The Karos leadership team and scientific staff have extensive R&D experience and collaborate closely with key opinion leaders and experts in rare diseases with significant medical needs. Karos is supported by leading life science investor New Leaf Venture Partners.
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The Karos Pharmaceuticals annual revenue was $4 million in 2026.
1 people are employed at Karos Pharmaceuticals.
Karos Pharmaceuticals is based in New Haven, Connecticut.
The NAICS codes for Karos Pharmaceuticals are [3254, 325, 32541, 32].
The SIC codes for Karos Pharmaceuticals are [2834, 28, 283].