ClinVar

NCBI’s public archive of human genetic variants and their clinical significance. The central repository for variant-disease relationships.

What It Does

  • Archives variant classifications from clinical labs and research groups
  • Classification levels: Pathogenic, Likely Pathogenic, VUS, Likely Benign, Benign
  • Submission history shows how classification evolved over time
  • Links to supporting evidence, conditions, and submitters

How to Use

Web

  1. Go to https://www.ncbi.nlm.nih.gov/clinvar/
  2. Search by gene (STRC), variant (c.4976A>C), or condition
  3. Review star rating (0-4 stars = review confidence)

API (E-utilities)

# Search for STRC variants
curl "https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=clinvar&term=STRC[gene]&retmax=100&retmode=json"
 
# Get specific variant
curl "https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=clinvar&id=VARIANT_ID&rettype=vcv&retmode=xml"

Python (Biopython)

from Bio import Entrez
Entrez.email = "[email protected]"
handle = Entrez.esearch(db="clinvar", term="STRC[gene]")
results = Entrez.read(handle)
print(f"STRC variants in ClinVar: {results['Count']}")

Verified Status

VERIFIED — STRC E1659A (c.4976A>C) checked: NOT in ClinVar as of 2026-04. This supports PM2 (absent from databases).

STRC Research Usage

Results (April 2026)

  • 427 STRC variants in ClinVar as of April 2026
  • E1659A (c.4976A>C) remains ABSENT — not submitted by any lab
  • Still untapped: set up alerts for new submissions, submit our VUS-high classification, track reclassification trends

Connections