COL11A2 p.Arg591=
c.1773G>A · rs1771231847 · VCV1434194
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.0011%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | all four deltas below 0.2 · C>A here scores Δ0.21 · evaluated, not missing |
|---|---|---|
| Pangolin | Δ0.25 | loss · gain 0.05 · SpliceAI below 0.2 · independent |
| Constraint at this position | ||
| Conservation | phyloP 1.6 | GERP 1.9, phastCons 1 |
| Overall | ||
| CADD | 17.56 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0011%
South Asian · 1/91,080 alleles
Filtering AF
0.000124%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 9e-05%
Overall
0.000372%
6/1,612,760 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0011% | 91,080 |
| European (non-Finnish) | 0.000424% | 235,994 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- COL11A2
- Protein
- p.Arg591=
- Coding
- c.1773G>A
- MANE Select
- NM_080680
- dbSNP
- rs1771231847
- Type
- single nucleotide variant
- Location
- chr6:33178435 (GRCh38)
- Gene constraint
- LOEUF 0.503 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 50.18
- Residue 591
- the 'disordered' region; the 'triple-helical region' region
Similar variants
- COL11A2 p.Arg591Ser Uncertain significance ★ ⚠ same residue
- COL11A2 c.1119+1G>A Likely pathogenic ★★ same type
- COL11A2 c.1819-2A>G Likely pathogenic ★★ same type
- COL11A2 c.3852+1G>T Likely pathogenic ★★ same type
- COL11A2 c.4392+1G>A Pathogenic ★★ same type
- COL11A2 c.607-2A>T Likely pathogenic ★★ same type
- COL11A2 c.876+1G>A Likely pathogenic ★★ same type
- COL11A2 p.Arg1020Ter Pathogenic/Likely pathogenic ★★ same type
Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →
Cite Sugi Variant
Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/col11a2-p-arg591 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown