COL1A2 p.Pro548=
c.1644C>T · rs760029920 · VCV1777108
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.005%, amr)
Conditions
1
Cardiovascular phenotype
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -9 | GERP -4.4 |
| Overall | ||
| CADD | 0.786 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.005%
Admixed American · 3/59,996 alleles
Filtering AF
0.00133%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000668%
Overall
0.00136%
22/1,613,900 alleles · very rare
exomes 20/1,461,744 · genomes 2/152,156 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.005% | 19,999 |
| African / African-American | 0.00401% | 24,967 |
| European (non-Finnish) | 0.00136% | 73,744 |
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
- COL1A2
- Protein
- p.Pro548=
- Coding
- c.1644C>T
- MANE Select
- NM_000089
- dbSNP
- rs760029920
- Type
- single nucleotide variant
- Location
- chr7:94413926 (GRCh38)
- Gene constraint
- LOEUF 0.339 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
- Structure
- AlphaFold pLDDT 55.02 · 5 PDB
- Residue 548
- the 'disordered' region
Similar variants
- COL1A2 c.2565+1G>A Pathogenic ★★ same condition
- COL1A2 p.Ala1119Thr Pathogenic/Likely pathogenic ★★ same condition
- COL1A2 p.Gly259Ser Pathogenic/Likely pathogenic ★★ same condition
- COL1A2 p.Gly907Ser Pathogenic/Likely pathogenic ★★ same condition
- COL1A2 c.1251+2T>G Uncertain significance ★★ same condition
- COL1A2 c.1404+4A>C Uncertain significance ★★ same condition
- COL1A2 c.792+4A>T Uncertain significance ★★ same condition
- COL1A2 p.Ala1035Thr Uncertain significance ★★ ⚠ same condition
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/col1a2-p-pro548 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown