Nurix Therapeutics is a clinical-stage biopharmaceutical company in San Francisco pioneering targeted protein degradation - medicines that destroy disease-causing proteins rather than merely blocking them. Built on its DELigase discovery engine that harnesses the cell's ubiquitin-proteasome system and DNA-encoded library screening, Nurix is advancing a pipeline of degraders and degrader antibody conjugates for cancer and autoimmune disease, led by the BTK degrader bexobrutideg (NX-5948). The company is partnered with Roche, Sanofi, Gilead, and Pfizer (via Seagen) and trades on Nasdaq under NRIX.
Protagonist Therapeutics is a Newark, California clinical-stage biopharmaceutical company that turns peptides - short chains of amino acids long dismissed as too fragile to be drugs - into stable, often orally available medicines. Its proprietary peptide discovery and engineering platform powers a pipeline spanning hematology, inflammation/immunology and metabolic disease, anchored by rusfertide (a hepcidin mimetic for polycythemia vera under FDA Priority Review) and icotrokinra, an oral IL-23 receptor blocker partnered with Johnson & Johnson that reached the U.S. market in 2026. Publicly traded on Nasdaq as PTGX, the company pairs internal discovery with high-value pharma partnerships.
Star Therapeutics is a South San Francisco clinical-stage biotech building first-in-class antibody medicines for serious diseases, with a 'pipeline-in-a-product' approach. Its lead asset VGA039, developed through subsidiary Vega Therapeutics, is a once-monthly subcutaneous monoclonal antibody targeting Protein S, now in Phase 3 for von Willebrand disease.
Adam Rosenthal is the CEO and Founder of Star Therapeutics, a clinical-stage biotech he launched in 2018 with a mission to develop life-changing therapies for rare diseases. An MIT and Harvard-trained biomedical engineer, Rosenthal built Star around the insight that shared biology across multiple rare diseases can yield single therapies addressing many conditions at once. His lead asset VGA039 - a first-in-class monoclonal antibody targeting Protein S - entered Phase 3 trials in 2025 for von Willebrand disease, the most common inherited bleeding disorder. Star has raised over $315 million from top-tier life sciences investors including Sanofi Ventures and Viking Global Investors.