Ditto Biosciences

Evolutionary intelligence for autoimmune disease

y-combinatorWinter 2026🇺🇸 San Francisco3 people

dittobio.com in LinkedIn 𝕏 Twitter

Adair Borges, Dennis Sun +1 · 3 co-founders

2026Founded

Team

current

Co-founders

current

Stage

Founded

Source for Founded

Profile coverage4 of 8 · missing Funding, Signals, Customers, Stack / tools · last run 8/8/2026

About

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

3 founders

Adair Borges

Founder

Ditto Bio Cofounder | Natural Protein Discovery

in LinkedIn 𝕏 @AdairLBorges

Dennis Sun

Founder

Scientist and operator transforming natural proteins into therapies. Trained in evolutionary and developmental biology at Harvard (AB) and UC Berkeley (PhD). Previously led software teams, product development, and scientific partnerships as Chief of Staff at a $500M biotech. Now building a platform to mine proteins from viruses, ticks, and worms that will become the next blockbuster drugs for autoimmune disease.

in LinkedIn 𝕏 @mezarque

Emily Weiss

Founder

I'm a molecular and computational biologist working to revolutionize drug discovery for autoimmune disease. At Ditto, I lead the platform for engineering parasite-derived therapeutics. I hold a PhD in microbiology, genomics, and plant genetics, with a focus on sequencing, high-throughput screening, and computational pipeline development. Published in Nature Microbiology and eLife. Previously at Illumina, DuPont, and an early-stage biotech venture team.

in LinkedIn 𝕏 @emilycpierce