Is DYSF p.Pro378= (c.1134T>C) pathogenic?

DYSF p.Pro378= (c.1134T>C) is classified Conflicting classifications of pathogenicity in DYSF (ClinVar, Conflicting submitters, 7 submitters; last evaluated 2026-02-01). Low-frequency (popmax 1.28%, sas); Associated with neuromuscular disease caused by qualitative or quantitative defects of dysferlin.

How common is DYSF p.Pro378= (c.1134T>C) in the general population?

DYSF p.Pro378= (c.1134T>C) is low-frequency (popmax 1.28%, sas) (gnomAD).

DYSF p.Pro378=

Q: What condition is associated with DYSF p.Pro378= (c.1134T>C)?

DYSF p.Pro378= (c.1134T>C) is associated with neuromuscular disease caused by qualitative or quantitative defects of dysferlin, autosomal recessive limb-girdle muscular dystrophy type 2B (ClinVar).

c.1134T>C · rs571559303 · VCV167017

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 7 submitters

gnomAD v4.1

Rare

low-frequency (popmax 1.28%, sas)

Conditions

neuromuscular disease caused by qualitative or quantitative defects of dysferlin

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 -7.7	GERP -4.5
Overall
CADD	0.777	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 1.28% South Asian · 1,165/91,068 alleles

Filtering AF 1.22% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.19%

Overall 0.0771% 1,244/1,614,094 alleles · low-frequency

Ancestry group	Frequency	1 in
South Asiangrpmax	1.28%	78
Remaining individualsnot grpmax-eligible	0.106%	947
Middle Eastern	0.0662%	1,511
African / African-American	0.004%	25,010
Admixed American	0.00167%	60,024
European (non-Finnish)	0.000424%	236,000

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.Pro378=
Coding: c.1134T>C
MANE Select: NM_001130987
dbSNP: rs571559303
Type: single nucleotide variant
Location: chr2:71520889 (GRCh38)
Gene constraint: LOEUF 0.836 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.25 · 11 PDB
Residue 378: a β-strand; the c2 3 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

Also linked: autosomal recessive limb-girdle muscular dystrophy type 2B

Similar variants

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
DYSF c.1276+5G>A Pathogenic ★★★ same condition
DYSF c.1276+5G>C 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-pro378 (accessed [today's date]).

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