Andreessen Horowitz Bio + Health
The life sciences and healthcare arm of the Silicon Valley venture firm Andreessen Horowitz (a16z). It backs founders who mix biology, software and care delivery, including a small number of cancer drug and diagnostics start-ups.
Overview
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.
Portfolio in OnCo (3)
Filter the startups table| Company | Stage | Type | Cancers | Latest round |
|---|---|---|---|---|
| Alpha-9 Oncology Vancouver, CA | Growth stage | radiopharma | Melanoma | Series C 2024, $175M |
| Thyme Care Nashville, TN, US | Growth stage | cro services | Series E 2026, $125M | |
| Valar Labs Palo Alto, CA, US | Startup | ai software | Bladder & urothelial cancerProstate cancerPancreatic ductal adenocarcinoma | Series A 2024, $22M |
Notes
top- Founded year is for the parent firm (Wikipedia). The a16z portfolio page is rendered client-side; oncology names were taken from the Bio + Health landing page.
Pages like this
not linked directly; found by shared links- CompanyGeneral Catalyst
Shares Alpha-9 Oncology and the tag vc.
- CompanyForesite Capital
Shares Thyme Care and the tag vc.
- CompanyDCVC
Shares Valar Labs and the tag vc.
- CompanySamsara BioCapital
Shares Alpha-9 Oncology and the tag vc.
- CompanyLightspeed Venture Partners
Shares Alpha-9 Oncology and the tag vc.
- CompanyFrazier Life Sciences
Shares Alpha-9 Oncology and the tag vc.
- CompanyRA Capital Management
Shares Alpha-9 Oncology and the tag vc.