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HexemBio
HexemBio is a New York- and Berkeley-based biotech building what it calls the first blood stem cell rejuvenation therapy. Its Synthetic Human Yolk Sac platform recreates the embryonic environment where blood stem cells first arise, temporarily placing a patient's own aged hematopoietic stem cells into that synthetic young niche before returning them by IV infusion - rather than gene-editing or chemically reprogramming the cells. The company launched publicly in April 2026 with a $10.4M seed round led by Draper Associates, holds an FDA Orphan Drug Designation for a bone-marrow-transplant program in blood cancers, and is targeting first-in-human trials in 2027.
Mohan Iyer
Mohan Iyer is a General Partner at SOSV's IndieBio SF, the world's leading biotech accelerator. With 25+ years operating life science startups across Genentech, Tethys Bioscience, Second Genome, and Pendulum Therapeutics, he brings rare bench-to-boardroom experience to pre-seed biotech founders. Trained as a chemical and biomedical engineer before earning his MBA from Yale, Iyer has spent his career translating disruptive biology into products the world actually needs — and now bets on founders doing the same.