Is COL6A2 p.Pro562Arg (c.1685C>G) pathogenic?

COL6A2 p.Pro562Arg (c.1685C>G) is classified Uncertain significance in COL6A2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-03-08). AlphaMissense: likely benign (0.1615); Very rare (popmax 0.00133%, afr); Associated with Bethlem myopathy 1A.

What condition is associated with COL6A2 p.Pro562Arg (c.1685C>G)?

COL6A2 p.Pro562Arg (c.1685C>G) is associated with Bethlem myopathy 1A (ClinVar).

How common is COL6A2 p.Pro562Arg (c.1685C>G) in the general population?

COL6A2 p.Pro562Arg (c.1685C>G) is very rare (popmax 0.00133%, afr) (gnomAD).

How is Bethlem muscular dystrophy inherited?

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

What do computational predictors say about COL6A2 p.Pro562Arg (c.1685C>G)?

AlphaMissense predicts likely benign (score 0.1615) — an in-silico prediction, not a clinical call.

COL6A2 p.Pro562Arg

c.1685C>G · rs370775804 · VCV2841384

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1615 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00133%, afr)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Bethlem myopathy 1A

Computational evidence

Protein change
AlphaMissense	0.1615	likely benign
REVEL	0.695	pathogenic-leaning
SaProt	LLR -7.80	tolerated
⇒ REVEL calls this damaging; AlphaMissense and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.7	GERP 0.91, phastCons 1
Regional constraint	o/e 1.16	unconstrained · MANE · 16 kb · p 1.4e-07 · regional, not allelic
Overall
CADD	25.0	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00133% African / African-American · 1/75,020 alleles

Overall 6.2e-05% 1/1,612,950 alleles · very rare exomes 1/1,460,730 · genomes 0/152,220 · 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: COL6A2
Protein: p.Pro562Arg
Coding: c.1685C>G
MANE Select: NM_001849
dbSNP: rs370775804
Type: single nucleotide variant
Location: chr21:46124664 (GRCh38)
Gene constraint: LOEUF 0.895 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 69.58 · 1 PDB
Residue 562: the 'triple-helical region' region; the 'disordered' region

Full COL6A2 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

COL6A2 p.Pro562Leu Uncertain significance ★★ ⚠ same residue
COL6A2 p.Pro562Thr Uncertain significance ★★ ⚠ same residue
COL6A2 c.1000-1G>T Pathogenic ★★ same condition
COL6A2 c.1000-2A>C Pathogenic ★★ same condition
COL6A2 c.1053+1G>A Pathogenic ★★ same condition
COL6A2 c.1053+1G>C Pathogenic/Likely pathogenic ★★ same condition
COL6A2 c.1053+2T>C Pathogenic/Likely pathogenic ★★ same condition
COL6A2 c.1054-2A>G Pathogenic/Likely 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/col6a2-p-pro562arg (accessed [today's date]).

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