Is DMD p.Arg737Cys (c.2209C>T) pathogenic?

DMD p.Arg737Cys (c.2209C>T) is classified Conflicting classifications of pathogenicity in DMD (ClinVar, Conflicting submitters, 3 submitters; last evaluated 2026-01-21). AlphaMissense: likely pathogenic (0.6407); Ultra-rare (popmax 0.0158%, afr); Associated with Cardiovascular phenotype.

What condition is associated with DMD p.Arg737Cys (c.2209C>T)?

DMD p.Arg737Cys (c.2209C>T) is associated with Cardiovascular phenotype, cardiomyopathy, Becker muscular dystrophy (ClinVar).

How common is DMD p.Arg737Cys (c.2209C>T) in the general population?

DMD p.Arg737Cys (c.2209C>T) is ultra-rare (popmax 0.0158%, afr) (gnomAD).

What do computational predictors say about DMD p.Arg737Cys (c.2209C>T)?

AlphaMissense predicts likely pathogenic (score 0.6407) — an in-silico prediction, not a clinical call.

DMD p.Arg737Cys

c.2209C>T · rs762960280 · VCV663012

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 3 submitters

AlphaMissense

likely pathogenic

0.6407 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0158%, afr)

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
AlphaMissense	0.6407	likely pathogenic
REVEL	0.428	indeterminate
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9.9	GERP 1.3, phastCons 1
Regional constraint	o/e 1.36	unconstrained · MANE · 1,863 kb · p 2.4e-62 · regional, not allelic
Overall
CADD	27.7	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 0.0158% African / African-American · 9/57,090 alleles

Filtering AF 0.00819% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00604%

Overall 0.000994% 12/1,207,649 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0158%	6,343
East Asian	0.00296%	33,733
European (non-Finnish)	0.000224%	446,672

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: DMD
Protein: p.Arg737Cys
Coding: c.2209C>T
MANE Select: NM_004006
dbSNP: rs762960280
Type: single nucleotide variant
Location: chrX:32518091 (GRCh38)

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

Disease context

Cardiovascular phenotype — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: cardiomyopathy Becker muscular dystrophy Duchenne muscular dystrophy

Similar variants

DMD p.Arg737Leu Uncertain significance ★★ same residue
DMD p.Arg737= Likely benign ★★ same residue
DMD p.Arg737His Conflicting classifications of pathogenicity ★ ⚠ same residue
DMD c.10086+1G>A Pathogenic ★★ same condition
DMD c.10086+1G>T Pathogenic ★★ same condition
DMD c.10086+2T>C Pathogenic ★★ same condition
DMD c.10087-2A>G Pathogenic/Likely pathogenic ★★ same condition
DMD c.10223+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/dmd-p-arg737cys (accessed [today's date]).

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