Ditto Biosciences YC Application

Winter 2026Active

Ditto Biosciences went through Y Combinator in the Winter 2026 batch as a Healthcare company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Winter 2026
Industry: HealthcareDrug Discovery and Delivery
Team size: 3
Status: Active
Launched: 2026

Founders

Dennis SunFounder
Adair BorgesFounder
Emily WeissFounder

What Ditto Biosciences does

Ditto Bio discovers drugs for autoimmune diseases by harnessing parasite biology. Viruses, ticks, and worms have experimented over millions of years to create proteins that control the human immune system. We use AI to identify these proteins and engineer them into next-generation autoimmune therapies. Our team is three PhD scientists from UCSF, UCSD, and UC Berkeley who have worked together for 3+ years in biotech. We have deep expertise in parasite biology, computational biology, and software for AI-based protein structure prediction

Ditto Biosciences's YC application, reconstructed

Y Combinator application

Ditto Biosciences, Winter 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Ditto Biosciences

Describe what your company does in 50 characters or less.

Evolutionary intelligence for autoimmune disease

What is your company going to make? Please describe your product and what it does or will do.

We build AI-driven tools that identify proteins from parasites - like viruses, ticks, and worms - that modulate human immune systems. We then engineer these proteins as drug candidates for autoimmune diseases. Our product is both the discovery platform and engineered biologics.

Where do you live now, and where would the company be based after YC?

We live in San Francisco, CA, and Ditto will remain based here after YC.

Explain your decision regarding location.

San Francisco offers the biotech talent and investor network we need. It's where the three of us live and have collaborated for years at top universities and labs.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real Ditto Biosciences YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Ditto Biosciences's public data (launch notes, founder backgrounds, product description). It shows how a company like Ditto Biosciences would present itself to YC, not the text they submitted.