VPS
VPS - Variant Priority Score Current genetic-testing tools (ClinVar, InterVar, Franklin) can only classify variants that already exist in reference databases - roughly 80% of which are European-ancestry.
Core trick
Scores novel variants by combining ESM-2, Evo2, and REVEL pathogenicity with inheritance-specific maximum credible allele frequency thresholds.
Tags
Description
VPS - Variant Priority Score
Current genetic-testing tools (ClinVar, InterVar, Franklin) can only classify variants that already exist in reference databases - roughly 80% of which are European-ancestry. For the 2 billion people of South Asian descent, most clinically relevant variants are novel: never seen, never classified, never scored. A "negative" report is often not truly negative - it is uninformative.
We built VPS, a phenotype-driven, population-aware, inheritance-aware engine that scores exactly these novel and uncertain-significance variants. A clinician starts from a clinical question, not a gene list; VPS assembles the relevant gene panel, then scores every variant on five transparent axes , pathogenicity (blending the ESM-2 protein language model, the Evo2 DNA language model, and REVEL/AlphaMissense/CADD), inheritance-aware population frequency (Whiffin–Ware maximum credible allele frequency), domain criticality, regional pathogenic density, and AlphaFold structural confidence , into a single 0–100 priority with a plain-English rationale for each variant. Crucially, the frequency axis is inheritance-specific: the same allele can score consistent with a recessive disease yet be far too common for a dominant one, so every panel is split by inheritance model.
Applied to IndiGenomes (1,029 open-source Indian whole genomes, CSIR-IGIB), we scored 3,594 novel variants , absent from every global database , across 6 inheritance panels and 52 genes spanning Wilson disease, sudden cardiac death (recessive and dominant), primary immunodeficiency/HLH, treatable neurometabolic disease, and hereditary breast/ovarian cancer, at 100% coverage across all variant classes (missense, truncating, in-frame indel, and non-coding). As blinded validation, known ClinVar Pathogenic/Likely-Pathogenic variants scored measurably higher than known Benign variants (Wilson: 64.3 vs 57.9) without ClinVar labels ever being used as scoring input — the separation comes purely from independent evidence.
This matters because every one of these 3,594 variants sits in a gene where a missed variant can mean a preventable death , a homozygous cardiac variant in a child, a treatable neurometabolic disorder with a closing therapeutic window, a hereditary-cancer variant invisible to a European-calibrated panel. VPS is a framework for ethnicity-aware variant interpretation: same data, same patient, a different and defensible answer, because it scores what other tools call negative.
(Research-triage tool it ranks which variants warrant functional follow-up, not a clinical diagnostic.)
README excerpt
# VPS — Variant Priority Score ### A population-aware, phenotype-driven, inheritance-aware engine for scoring novel & uncertain-significance variants **Built with Claude: Life Sciences Hackathon | July 2026** Data: [IndiGenomes](https://clingen.igib.res.in/indigen/) (CSIR-IGIB, 1,029 Indian whole genomes, open-source) > ⚕️ **Research-triage tool, not a clinical diagnostic.** VPS ranks how much a novel variant warrants functional follow-up. It does not make clinical calls. --- ## The problem Current variant-interpretation tools (ClinVar, InterVar, Franklin) can only classify variants that **already exist** in reference databases — ~80% of which are European-ancestry. For the 2 billion people of South Asian descent, most clinically relevant variants are **novel**: never seen, never classified, never scored. A "negative" genetic report is often not truly negative — it is uninformative. From IndiGenomes, **710,765** variants are absent from gnomAD and all global databases. **3,594** of them fall in genes across 6 inheritance panels where a missed variant can mean a preventable death — and VPS scores **every one** (100% coverage, all variant classes). ## What VPS does 1. **Phenotype → gene panel.** The physician picks a clinical question, not a gene list. 2. **Inheritance-aware frequency.** AR diseases use recessive Max Credible Allele Frequency (√); AD use the linear form; XL uses hemizygous. The *same* variant scores differently under different inheritance models — which i