Is FLNC p.Arg1758= (c.5274G>A) pathogenic?

FLNC p.Arg1758= (c.5274G>A) is classified Likely benign in FLNC (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-11-15). Very rare (popmax 0.000261%, nfe); Associated with Cardiovascular phenotype.

What condition is associated with FLNC p.Arg1758= (c.5274G>A)?

FLNC p.Arg1758= (c.5274G>A) is associated with Cardiovascular phenotype, myofibrillar myopathy 5, distal myopathy with posterior leg and anterior hand involvement (ClinVar).

How common is FLNC p.Arg1758= (c.5274G>A) in the general population?

FLNC p.Arg1758= (c.5274G>A) is very rare (popmax 0.000261%, nfe) (gnomAD).

FLNC p.Arg1758=

c.5274G>A · rs1053977049 · VCV1103483

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.000261%, nfe)

Conditions

Cardiovascular phenotype

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 5.7	phastCons 1
Overall
CADD	9.039	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000261% European (non-Finnish) · 3/1,149,840 alleles

Filtering AF 7e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.000194% 3/1,543,448 alleles · very rare exomes 3/1,391,168 · genomes 0/152,280 · joint denominator

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: FLNC
Protein: p.Arg1758=
Coding: c.5274G>A
MANE Select: NM_001458
dbSNP: rs1053977049
Type: single nucleotide variant
Location: chr7:128850050 (GRCh38)
Gene constraint: LOEUF 0.424 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 1758: the 'hinge 1' region; the 'disordered' region

Full FLNC 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: myofibrillar myopathy 5 distal myopathy with posterior leg and anterior hand involvement hypertrophic cardiomyopathy 26

Similar variants

FLNC p.Arg1758Gln Conflicting classifications of pathogenicity ★ ⚠ same residue
FLNC p.Arg1758Gly Uncertain significance ★ ⚠ same residue
FLNC p.Arg1758Leu Uncertain significance ★ ⚠ same residue
FLNC p.Arg1758Trp Conflicting classifications of pathogenicity ★ same residue
FLNC c.1047+1G>T Likely pathogenic ★★ same condition
FLNC c.1048-1G>A Likely pathogenic ★★ same condition
FLNC c.1210+1G>A Likely pathogenic ★★ same condition
FLNC c.1549+2T>G Likely 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/flnc-p-arg1758 (accessed [today's date]).

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