Is DYSF p.Ser321Phe (c.962C>T) pathogenic?

DYSF p.Ser321Phe (c.962C>T) is classified Uncertain significance in DYSF (ClinVar, Multiple submitters, 3 submitters; last evaluated 2022-03-23). AlphaMissense: likely pathogenic (0.8092); Absent from gnomAD v4.1; Associated with neuromuscular disease caused by qualitative or quantitative defects of dysferlin.

How common is DYSF p.Ser321Phe (c.962C>T) in the general population?

DYSF p.Ser321Phe (c.962C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about DYSF p.Ser321Phe (c.962C>T)?

AlphaMissense predicts likely pathogenic (score 0.8092) — an in-silico prediction, not a clinical call.

DYSF p.Ser321Phe

Q: What condition is associated with DYSF p.Ser321Phe (c.962C>T)?

DYSF p.Ser321Phe (c.962C>T) is associated with neuromuscular disease caused by qualitative or quantitative defects of dysferlin (ClinVar).

c.962C>T · rs776921154 · VCV287473

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely pathogenic

0.8092 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

neuromuscular disease caused by qualitative or quantitative defects of dysferlin

Computational evidence

Protein change
AlphaMissense	0.8092	likely pathogenic
REVEL	0.599	indeterminate
SaProt	LLR -10.29	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.5	GERP 1.9, phastCons 1
Regional constraint	o/e 1.02	unconstrained · MANE · 85 kb · p 0.54 · regional, not allelic
Overall
CADD	23.7	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM S289F vs ClinVar S321F) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: DYSF
Protein: p.Ser321Phe
Coding: c.962C>T
MANE Select: NM_001130987
dbSNP: rs776921154
Type: single nucleotide variant
Location: chr2:71516999 (GRCh38)
Gene constraint: LOEUF 0.836 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.25 · 11 PDB
Residue 321: a β-strand; the c2 2 domain

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

Disease context

neuromuscular disease caused by qualitative or quantitative defects of dysferlin — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

DYSF p.Ser321Pro Likely pathogenic ★★★ same residue
DYSF p.Ser321Cys Uncertain significance ★★ ⚠ same residue
DYSF p.Ser321= 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+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-ser321phe (accessed [today's date]).

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