Ruth-Anne Pai, PhD
Built with Claude: Life Sciences Hackathon · 2026

Open therapeutic science, from target to a fundable plan.

I'm Ruth-Anne Pai, PhD — an immunologist, protein designer, and person living with eosinophilic esophagitis (EoE). In one week I built an end-to-end body of work: mining public omics to nominate targets, designing antigen-specific protein therapeutics with ESM-family and folding models, and packaging it all into reusable software, three manuscripts, and a development plan — then proved the same engine generalizes by pointing it at a second disease, esophageal cancer. Everything here is open.

3
preprint manuscripts across 3 work streams
2
diseases — EoE and esophageal cancer
12
open-source repositories
2
reusable Specialist Agents (program + manuscript)

How to read this work. This is a one-week, one-person citizen-science project, produced with substantial AI assistance (Anthropic Claude Science) under my direction. Every result here is computational (in-silico) and has not been experimentally or clinically validated; the manuscripts are preprints that have not been peer reviewed. It is shared openly as a method and a set of hypotheses — not medical advice, and not established results.

Find your path

Where would you like to start?

The work spans data mining, protein design, software, and a full biotech plan. Pick the entry point that fits you — each card points to the pages built for you.

Patient-led nonprofit & advocates

Start with the Patient Organization Navigator

A discovery-first AI specialist built for advocates and org leaders: it maps where your disease area stands, what has been done, where the gaps are, and where your funding and capacity sit — resources to review, never a prescription.

Scientists using protein models

De novo design across three programs

Read the methods and structures behind the pMHC-II tolerance work, the CCL26/POSTN effector binders, and the GUCY2C/DKK1 cancer-interception binders — three de novo campaigns, one pipeline.

Biotech, investors & partners

Project Tolera — a roadmap to patients

The full package: platform thesis, market, competitive whitespace, regulatory path, budget, and milestones.

Developers & Claude Science users

Reusable skills & pipelines

Twelve open repositories — skills for target mining, epitope mapping, protein design, manuscript drafting, patient-org navigation, market analysis, peer review, media, and project archiving.

Academics & data scientists

Omics-mined targets, reproducibly

A ten-stage pipeline from public GEO/PRIDE/CELLxGENE data to a ranked, druggability-annotated target shortlist.

Just curious?

The one-week story

How a citizen-scientist took EoE from "here is a disease" to IND-ready design and a plan — all in public.

What the week produced

A drug-development engine for any disease

The throughline isn't a single molecule — it's a reusable pipeline and a pair of AI specialists that take any disease from public data to a full program and a written manuscript. Two agents do the work end to end: the Therapeutic Program Architect (disease → program) and the Manuscript Architect (program → preprint). See the engine that works for any disease →

To prove it, I ran it end to end on three programs across two diseases:

Stream 1 · Tolerance

Personalized pMHC-II tolerance

An antigen-selection engine that turns a person's HLA type into a ranked, manufacturable epitope set — 4,640 peptide×allele evaluations → 832 strong binders — with a folded, groove-validated milk lead on a tolerogenic nanoparticle.

Stream 2 · Effector axis

CCL26 / POSTN binders

A 9-cohort transcriptomic meta-analysis surfaced two high-evidence, no-trial targets; 80→1,920→60 de novo binder designs followed — reported with an honest negative-control calibration.

Stream 3 · Cancer interception

EAC / Barrett's dual-arm program

The same engine pointed at esophageal cancer: TCGA genomics → a whitespace map → two nominated targets (GUCY2C, DKK1) → 16 de novo binders, 15/16 clearing the interface line — proof the method generalizes.

Review the full work

Browse the complete project archive

Every working session behind these programs — target mining, protein design, the business and scientific plan — is captured in a browsable Work Archive: a per-session summary linked to the figures, tables, structures, manuscripts, and code it produced, with a filterable artifact browser and a provenance page for the large datasets. It's built for others to check the work and reuse it for their own tools and programs.

EoE target landscape: literature evidence versus clinical maturity, sized by opportunity score
The EoE target landscape that anchored the week: strong biology, thin pipeline. High-evidence, no-trial targets (CCL26, POSTN, IL-13, CAPN14) mark the unexploited biology this work set out to address.