Biotech pharma

Ditto Biosciences

Website
Founded 2025Origin source ↗Checked 2026-09-15

Overview

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

Company description As recorded 2026-11-08

Founders & team

Dennis Sun

Founder/CEO

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.

Founder profile As recorded 2026-09-15

Adair Borges

Founder

Entrepreneurial scientist using evolution to build the next generation of therapeutics for autoimmune disease. UCSF-trained PhD with expertise spanning parasitology, virology, and genomics. Published over 50 scientific papers, and is a coinventor on a patent for anti-CRISPR proteins. Former Miller Fellow at UC Berkeley, and previously led a venture creation team at an early stage biotech company. Motivated by a lifelong fascination with parasites.

Founder profile As recorded 2026-09-15

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.

Founder profile As recorded 2026-09-15
3team members reported
Source-reported As recorded 2026-09-15

Founded 2025 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
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