David Tsao

Co-Founder, BillionToOne · 1 appearance on the record.

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David Tsao co-founded BillionToOne alongside Oguzhan Atay. Together, they built the molecular diagnostics startup from a lab bench into a multibillion-dollar biotech company.

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1 assertion · every statement was checked. The predictions and assertion are the 1 claim: statements the public record can support or contradict. 0 are resolved, and 1 names no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

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Everything David Tsao said on the Y Combinator Startup Podcast that made the record, most notable first. Filter by type, assessment or year in the ledger →

Assertion Not checkable as stated

Tsao: NorthStar Select found actionable cancer targets missed by tissue biopsy

“We ended up testing this person using our North Star Select test. We identified that this person was eligible for A therapy called immunotherapy based on identifying microsatellite instability in the tumor DNA that was in that patient's bloodstream, and this w…”

David Tsao Apr 6, 2026 ▶ 14:30 BillionToOne Is Solving One of Biotech’s Hardest Problems · Y Combinator

The other half of the tape: David Tsao's own voice is left out of every number here. 1 statement on the record names them. every mention, with the transcript →

Statements about David Tsao, by other people (1)

Disclosure

Bilgen: Small R&D teams own products and report directly to co-founders

“We actually have very small you know, research teams. It is essentially principal investigators, like a scientist who is interdisciplinary, who has a small team of, you know, two or three research associates, and they all directly report to David and me, and t…”

Ozan Bilgen Apr 6, 2026 ▶ 15:51 BillionToOne Is Solving One of Biotech’s Hardest Problems · Y Combinator

Appearances (1)

Episode	Date	Speaking time
BillionToOne Is Solving One of Biotech’s Hardest Problems · Y Combinator	Apr 6, 2026	2m

David Tsao

Statements about David Tsao, by other people (1)

Appearances (1)

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