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Ditto Biosciences

Ditto Biosciences

Winter 2026

Evolutionary therapies for autoimmune disease

BiotechTherapeuticsDrug discovery

About Company

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.

Active Founders

Adair Borges

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.

Dennis Sun

Dennis Sun

Founder

Scientist and operator transforming natural proteins into therapies. Trained in evolutionary and developmental biology at Harvard and UC Berkeley, and previously led product development and scientific partnerships as Chief of Staff at an early-stage biotech. Now engineering proteins from viruses, ticks, and worms into first-in-class drugs for autoimmune disease.

Emily Weiss

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.

Company Facts

LocationSan Francisco, CA, USA
Team Size3
Founded2026
StatusActive