David Tsao
Co-founder of BillionToOne and a scientist-entrepreneur with a background in biology-related research. Helped develop the company's core cell-free DNA technology for prenatal and cancer diagnostics.
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Apr 6, 2026 • 21min
This Startup Wants To Catch Cancer Before It Spreads
David Tsao, BillionToOne co-founder and biotech researcher, joins Oguzhan Atay, the company’s co-founder and CEO in molecular diagnostics. They talk about spotting tiny DNA fragments in blood, turning messy biology into math, building a prenatal test at scale, fixing a rough go-to-market strategy, and pushing toward blood tests that could catch cancer before it spreads.
