Is FLNC p.Pro1774Arg (c.5321C>G) pathogenic?

FLNC p.Pro1774Arg (c.5321C>G) is classified Uncertain significance in FLNC (ClinVar, Single submitter, 1 submitter; last evaluated 2024-05-22). AlphaMissense: likely benign (0.1329); Absent from gnomAD v4.1; Associated with hypertrophic cardiomyopathy 26.

What condition is associated with FLNC p.Pro1774Arg (c.5321C>G)?

FLNC p.Pro1774Arg (c.5321C>G) is associated with hypertrophic cardiomyopathy 26, myofibrillar myopathy 5, distal myopathy with posterior leg and anterior hand involvement (ClinVar).

How common is FLNC p.Pro1774Arg (c.5321C>G) in the general population?

FLNC p.Pro1774Arg (c.5321C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about FLNC p.Pro1774Arg (c.5321C>G)?

AlphaMissense predicts likely benign (score 0.1329) — an in-silico prediction, not a clinical call.

FLNC p.Pro1774Arg

c.5321C>G · rs1273796039 · VCV1447356

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1329 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

hypertrophic cardiomyopathy 26

⚠ Built without this gene's context — gene constraint and dosage, protein structure, pathways, panels and related-variant links were not looked up for this page. why

Computational evidence

Protein change
AlphaMissense	0.1329	likely benign
REVEL	0.486	indeterminate
SaProt	—	not scored · why
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 5.9	phastCons 1
Regional constraint	o/e 0.83	unconstrained · MANE · 2,000 bp · p 0.0021 · regional, not allelic
Overall
CADD	24.7	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL is an independent agreement signal.

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: FLNC
Protein: p.Pro1774Arg
Coding: c.5321C>G
MANE Select: NM_001458
dbSNP: rs1273796039
Type: single nucleotide variant
Location: chr7:128850406 (GRCh38)

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

Disease context

hypertrophic cardiomyopathy 26 — 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

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-pro1774arg (accessed [today's date]).

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