Harnessing
Hidden Immunity.
Borrowing Nature’s Playbook To Fight Cancer and Autoimmunity
Using AI to decode nature’s signals to guide the next generation of immunotherapy development.
Sift is building a proprietary peptide immunotherapy platform that combines AI, metagenomics, and high-throughput T-cell screening to discover peptides that drastically amplify immune responses, unlocking targeted, effective, and safe treatment for cancers and autoimmune diseases where current therapies fall short. Our ultimate goal is to bring durable disease control to every patient.

Our Science
Harnessing pre-existing microbial immunity to target cancer and other immune-dysregulated diseases.
In oncology, the scarcity of anticancer T cells remains a major barrier to effective treatment across most hematological and solid tumors. At Sift, we address this challenge by pioneering a novel class of T-cell modulators derived from bacteria and viruses that frequently interact with our immune system. Using AI-driven discovery and high-throughput cellular screening, we identify microbially derived peptides that activate a distinct set of memory T cells, capable of recognizing and responding effectively to both microbial and cancer targets of interest.
Our Team
Spinning out of UC Berkeley, the Sift team brings together AI-driven discovery and deep translational immunology, with a proven track record of advancing novel immunotherapies from early concept through IND-enabling development. Collectively, the team has built and scaled high-throughput discovery platforms and led T-cell, peptide, and cell-based immunotherapy programs across leading academic labs, biotech startups, and biopharma. Merging this experience with proprietary datasets and computational pipelines, Sift is shaping a new frontier in immunotherapy—unlocking the power of pre-existing immunity to create a fundamentally new class of cancer treatments.
Contact Us
If you’re curious about Sift’s science, exploring partnership opportunities, or interested in working with Sift, we’d be glad to connect and continue the conversation.
info@siftbio.com | 733 Industrial Rd | San Carlos, CA