Andreessen Horowitz Bio + Health

Andreessen Horowitz was founded in 2009 in Menlo Park by Marc Andreessen and Ben Horowitz (Wikipedia). Its Bio + Health team describes itself as partnering with founders 'redefining the frontiers of medicine and healthcare', from life sciences to care delivery, with a team that combines former founders and operators with MDs, PhDs and technologists. The practice invests from seed to growth and is best known for computational biology and health-system software rather than classic biotech company creation. Oncology appears through precision medicine bets: the Bio + Health page lists IDRx (targeted therapies for gastrointestinal stromal tumours) and Cartography Biosciences (tumour-specific antigen discovery for cancer immunotherapy), alongside AI drug discovery firms such as Genesis and insitro.