Is DYSF p.Arg762Cys (c.2284C>T) pathogenic?

DYSF p.Arg762Cys (c.2284C>T) is classified Uncertain significance in DYSF (ClinVar, Multiple submitters, 6 submitters; last evaluated 2025-08-23). AlphaMissense: ambiguous (0.5493); Very rare (popmax 0.00878%, sas); Associated with Inborn genetic diseases.

How common is DYSF p.Arg762Cys (c.2284C>T) in the general population?

DYSF p.Arg762Cys (c.2284C>T) is very rare (popmax 0.00878%, sas) (gnomAD).

What do computational predictors say about DYSF p.Arg762Cys (c.2284C>T)?

AlphaMissense predicts ambiguous (score 0.5493) — an in-silico prediction, not a clinical call.

DYSF p.Arg762Cys

Q: What condition is associated with DYSF p.Arg762Cys (c.2284C>T)?

DYSF p.Arg762Cys (c.2284C>T) is associated with Inborn genetic diseases, autosomal recessive limb-girdle muscular dystrophy type 2B, neuromuscular disease caused by qualitative or quantitative defects of dysferlin (ClinVar).

c.2284C>T · rs181551438 · VCV285643

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 6 submitters

AlphaMissense

ambiguous

0.5493 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00878%, sas)

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.5493	ambiguous
REVEL	0.918	moderately pathogenic-leaning
SaProt	LLR -9.40	tolerated
⇒ REVEL calls this damaging; SaProt does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.9	GERP 1.8, phastCons 1
Regional constraint	o/e 0.82	unconstrained · MANE · 18 kb · p 4.1e-05 · regional, not allelic
Overall
CADD	25.4	PHRED · no single calibrated threshold — expert panels disagree

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM R744C vs ClinVar R762C) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00878% South Asian · 8/91,080 alleles

Filtering AF 0.00437% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00312%

Overall 0.00372% 60/1,614,174 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00878%	11,385
Remaining individualsnot grpmax-eligible	0.0064%	15,627
African / African-American	0.00533%	18,762
European (non-Finnish)	0.00347%	28,781
Ashkenazi Jewishnot grpmax-eligible	0.00338%	29,608
East Asian	0.00223%	44,866
Finnishnot grpmax-eligible	0.00156%	64,040

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: DYSF
Protein: p.Arg762Cys
Coding: c.2284C>T
MANE Select: NM_001130987
dbSNP: rs181551438
Type: single nucleotide variant
Location: chr2:71561819 (GRCh38)
Gene constraint: LOEUF 0.836 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.25 · 11 PDB

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: autosomal recessive limb-girdle muscular dystrophy type 2B neuromuscular disease caused by qualitative or quantitative defects of dysferlin

Similar variants

DYSF p.Arg762His Uncertain significance ★★ ⚠ same residue
DYSF p.Arg762= Likely benign ★ same residue
DYSF c.1003-3C>A Pathogenic ★★★ same condition
DYSF c.1033+1G>A Pathogenic ★★★ same condition
DYSF c.1033+4A>T Likely pathogenic ★★★ same condition
DYSF c.1149+1G>A Pathogenic ★★★ same condition
DYSF c.1149+1G>C Pathogenic ★★★ same condition
DYSF c.1149+4A>G 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/dysf-p-arg762cys (accessed [today's date]).

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