Uncommon Therapeutics (YC W25) — A disease focused Biotech, building multiple billion dollar drugs
Our founder Noah, an experienced tech entrepreneur, was directly impacted by a severe genetic disease when his daughter was diagnosed with Rett Syndrome, a disease that afflicts 1 in 10,000 girls. Using an innovative polytherapy strategy, we’ve successfully improved her quality of life, and have designed new therapeutics that each could be worth billions and together could deliver a cure.
Uncommon Therapeutics is a Y Combinator company in the Winter 2025 batch. Its directory entry describes it as: A Disease Focused Biotech, Building Multiple Billion Dollar Drugs. The founders listed are Noah Auerhahn (Founder/CEO), Ryan Lim (Founder) (Y Combinator directory entry, February 21, 2025).
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
Our founder Noah, an experienced tech entrepreneur, was directly impacted by a severe genetic disease when his daughter was diagnosed with Rett Syndrome, a disease that afflicts 1 in 10,000 girls. Using an innovative polytherapy strategy, we’ve successfully improved her quality of life, and have designed new therapeutics that each could be worth billions and together could deliver a cure.
Noah Auerhahn
Founder/CEO
Ryan Lim
Founder
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
One of 65 companies held here in Healthcare › Therapeutics.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
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What They Do, And How The Money Works
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