Is DYSF p.Pro1664= (c.4992C>T) pathogenic?

DYSF p.Pro1664= (c.4992C>T) is classified Likely benign in DYSF (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-08). Very rare (popmax 0.00659%, sas); Associated with neuromuscular disease caused by qualitative or quantitative defects of dysferlin.

How common is DYSF p.Pro1664= (c.4992C>T) in the general population?

DYSF p.Pro1664= (c.4992C>T) is very rare (popmax 0.00659%, sas) (gnomAD).

DYSF p.Pro1664=

Q: What condition is associated with DYSF p.Pro1664= (c.4992C>T)?

DYSF p.Pro1664= (c.4992C>T) is associated with neuromuscular disease caused by qualitative or quantitative defects of dysferlin (ClinVar).

c.4992C>T · rs369004367 · VCV1097648

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00659%, 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	<0.2	all four deltas below 0.2 · C>G here scores Δ0.82 · evaluated, not missing
Constraint at this position
Conservation	phyloP -0.59	GERP -0.05, phastCons 0.065
Overall
CADD	10.06	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00659% South Asian · 6/91,070 alleles

Filtering AF 0.00286% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00195%

Overall 0.00105% 17/1,613,730 alleles · very rare exomes 16/1,461,580 · genomes 1/152,150 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00659%	15,178
Admixed American	0.00167%	60,000
Remaining individualsnot grpmax-eligible	0.0016%	62,464
African / African-American	0.00134%	74,904
European (non-Finnish)	0.000678%	147,474

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.Pro1664=
Coding: c.4992C>T
MANE Select: NM_001130987
dbSNP: rs369004367
Type: single nucleotide variant
Location: chr2:71660640 (GRCh38)
Gene constraint: LOEUF 0.836 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.25 · 11 PDB
Residue 1664: a β-strand; the c2 6 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 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
DYSF c.1276+5G>A Pathogenic ★★★ same condition
DYSF c.1276+5G>C Pathogenic ★★★ same condition
DYSF c.1481-1G>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/dysf-p-pro1664 (accessed [today's date]).

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