Variant knowledge management

Variant Knowledge Management Software for Labs

GENVAR records every classification as a versioned, searchable event on a GA4GH VRS store, so a lab's accumulated judgment stays its own. The software is customized to a lab's classification schema, runs on-premise, and monitors global variant databases for changes.


Built on GA4GH VRS, with a PGVector co-pilot. Engineered for self-hosted deployment.

Variant Knowledge Management Software | NonStop GENVAR

When an analyst leaves, their reasoning leaves too

A lab's most valuable asset is its accumulated clinical judgment: the classifications it has made, the evidence behind them, and the reclassification history that goes with them. Inside a closed vendor platform, that knowledge cannot be queried, migrated cleanly, or used as a foundation for AI, and when ClinVar updates, nobody finds out until a clinician asks.

This is not a rare edge case. Variant evidence changes constantly, and variants of uncertain significance are regularly reclassified, so a lab that cannot surface its own precedents ends up repeating interpretation work it has already done.

What GENVAR includes

GENVAR arrives as a working knowledge repository that a lab shapes to its own classification practice.

  • A GA4GH VRS canonical store, so the same variant links to one record across every workflow
  • Versioned classification events, where a reclassification creates a new version and never overwrites the old
  • An evidence graph that draws on ClinVar, gnomAD, and OMIM
  • Semantic search across the full interpretation history, powered by a PGVector co-pilot
  • ClinVar diff monitoring that surfaces reclassification candidates before a clinician asks
  • A repository structured so the lab's own data can ground and train AI assistance

What's ready to run, and what the lab tailors

The canonical store, the versioning model, and the semantic search already exist, so a project starts around the halfway mark rather than at zero.

Already builtCustomized for the lab
VRS canonical store, versioning model, evidence graph, semantic search, ClinVar monitoringThe classification schema and evidence weighting, the reanalysis triggers, the migration from existing records, integrations

Because that foundation is in place, NonStop estimates a build reaches production 40 to 50 percent faster than starting from scratch, and the lab owns the result when the engagement ends.

Underneath interpretation, as the lab's memory

GENVAR is the canonical record that every interpretation draws on and writes back to. It gives the interpretation layer its precedents and keeps the institutional history searchable.

Shares VRSVariant interpretation (Varion)
MonitorsClinVar for reclassification candidates
SurfacesThe lab's own prior classifications during new cases
DeploysOn-premise or private cloud

From hunting for evidence, down to seconds

Manual curationWith GENVAR
30–60 min a variant to surface the evidenceUnder 2 min to surface variant evidence
~60% of re-work eliminated

* Figures are NonStop estimates and vary by engagement scope.

Because reanalysis of existing data steadily improves diagnostic yield over time, a system that flags variants for re-review turns a forgotten task into recovered diagnoses.

Frequently Asked Questions

Why own your variant knowledge instead of using a vendor platform?
A lab's classifications and reasoning are its most valuable asset. Owned and queryable, they become the foundation for reanalysis and AI, but locked inside a closed format, they cannot be searched, migrated, or built on.
How does GENVAR track ClinVar reclassifications?
It monitors ClinVar for changes and surfaces the variants in a lab's history that are now candidates for re-review, so reclassification becomes a prompted task instead of a missed one.
What makes the variant store canonical?
GENVAR uses GA4GH VRS, so a variant carries one stable identity across germline and somatic workflows, which keeps classifications consistent and migratable.
Is GENVAR an off-the-shelf product?
No. It is a production-tested component that a lab customizes to its own classification schema and reanalysis triggers, and then owns. It shortens the build rather than replacing curation.
Can it run on-premise?
Yes. GENVAR supports on-premise and private-cloud deployment, so the knowledge base and patient data stay inside the lab's infrastructure.

Book a call

Make your lab's judgment a queryable asset

Book a 15-minute scoping call and tell us where the lab's classifications live today. We will show what migration and ownership would look like.

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