Is COL5A2 p.Pro827= (c.2481T>C) pathogenic?

COL5A2 p.Pro827= (c.2481T>C) is classified Likely benign in COL5A2 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-12-27). Very rare (popmax 0.000593%, nfe); Associated with Ehlers-Danlos syndrome, classic type, 1.

What condition is associated with COL5A2 p.Pro827= (c.2481T>C)?

COL5A2 p.Pro827= (c.2481T>C) is associated with Ehlers-Danlos syndrome, classic type, 1 (ClinVar).

How common is COL5A2 p.Pro827= (c.2481T>C) in the general population?

COL5A2 p.Pro827= (c.2481T>C) is very rare (popmax 0.000593%, nfe) (gnomAD).

How is Classical Ehlers-Danlos syndrome inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

COL5A2 p.Pro827=

c.2481T>C · rs749675749 · VCV746521

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.000593%, nfe)

Conditions

Ehlers-Danlos syndrome, classic type, 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.69	GERP -4.8
Overall
CADD	6.593	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000593% European (non-Finnish) · 7/1,179,972 alleles

Filtering AF 0.000247% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000159%

Overall 0.000434% 7/1,614,096 alleles · very rare exomes 7/1,461,736 · genomes 0/152,360 · joint denominator

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: COL5A2
Protein: p.Pro827=
Coding: c.2481T>C
MANE Select: NM_000393
dbSNP: rs749675749
Type: single nucleotide variant
Location: chr2:189053913 (GRCh38)
Gene constraint: LOEUF 0.106 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 53.15
Residue 827: the 'disordered' region

Full COL5A2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Ehlers-Danlos syndrome, classic type, 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Classical Ehlers-Danlos syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: Childhood, Infancy, Neonatal
Prevalence: 1-9 / 100 000 (Worldwide)

Similar variants

COL5A2 p.Pro827Thr Uncertain significance ★ ⚠ same residue
COL5A2 c.1159-1G>A Likely pathogenic ★★ same condition
COL5A2 c.369+1G>T Likely pathogenic ★★ same condition
COL5A2 p.Gly252Cys Pathogenic/Likely pathogenic ★★ same condition
COL5A2 p.Pro659= Pathogenic ★★ same condition
COL5A2 c.1005+4T>C Uncertain significance ★★ same condition
COL5A2 c.1618-7G>A Uncertain significance ★★ same condition
COL5A2 c.1716+5G>A 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/col5a2-p-pro827 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown