Is COL6A3 p.Ala2935= (c.8805G>A) pathogenic?

COL6A3 p.Ala2935= (c.8805G>A) is classified Conflicting classifications of pathogenicity in COL6A3 (ClinVar, Conflicting submitters, 3 submitters; last evaluated 2025-11-08). Ultra-rare (popmax 0.045%, amr); Associated with Bethlem myopathy 1A.

What condition is associated with COL6A3 p.Ala2935= (c.8805G>A)?

COL6A3 p.Ala2935= (c.8805G>A) is associated with Bethlem myopathy 1A (ClinVar).

How common is COL6A3 p.Ala2935= (c.8805G>A) in the general population?

COL6A3 p.Ala2935= (c.8805G>A) is ultra-rare (popmax 0.045%, amr) (gnomAD).

How is Bethlem muscular dystrophy inherited?

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

COL6A3 p.Ala2935=

c.8805G>A · rs200111289 · VCV286170

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.045%, amr)

Conditions

Bethlem myopathy 1A

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 -9.6	GERP -3.1
Overall
CADD	0.496	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.045% Admixed American · 27/59,968 alleles

Filtering AF 0.0317% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0273%

Overall 0.00273% 44/1,613,116 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.045%	2,221
Middle Eastern	0.0165%	6,054
Remaining individualsnot grpmax-eligible	0.00801%	12,492
South Asian	0.00439%	22,757
Finnishnot grpmax-eligible	0.00156%	63,978
African / African-American	0.00133%	75,024
European (non-Finnish)	0.000424%	235,849

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: COL6A3
Protein: p.Ala2935=
Coding: c.8805G>A
MANE Select: NM_004369
dbSNP: rs200111289
Type: single nucleotide variant
Location: chr2:237336295 (GRCh38)
Gene constraint: LOEUF 0.564 · pLI <0.01 (gnomAD)
Residue 2935: the 'nonhelical region' region

Full COL6A3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Bethlem myopathy 1A — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Bethlem muscular dystrophy (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive
Onset: Childhood, Infancy
Prevalence: 1-9 / 1 000 000 (United Kingdom)

Similar variants

COL6A3 p.Ala2935Val Benign/Likely benign ★★ same residue
COL6A3 p.Ala2935Glu Uncertain significance ★ ⚠ same residue
COL6A3 c.5838+1G>T Pathogenic/Likely pathogenic ★★ same condition
COL6A3 c.6156+1G>A Pathogenic ★★ same condition
COL6A3 c.6157-2A>C Pathogenic ★★ same condition
COL6A3 c.6210+1G>A Pathogenic ★★ same condition
COL6A3 c.6282+1G>A Pathogenic ★★ same condition
COL6A3 c.6309+1G>A Pathogenic ★★ 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/col6a3-p-ala2935 (accessed [today's date]).

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