Is FLNC p.Ile37Val (c.109A>G) pathogenic?

FLNC p.Ile37Val (c.109A>G) is classified Uncertain significance in FLNC (ClinVar, Single submitter, 1 submitter; last evaluated 2022-10-03). AlphaMissense: likely pathogenic (0.9066); Absent from gnomAD v4.1; Associated with myofibrillar myopathy 5.

What condition is associated with FLNC p.Ile37Val (c.109A>G)?

FLNC p.Ile37Val (c.109A>G) is associated with myofibrillar myopathy 5, distal myopathy with posterior leg and anterior hand involvement, hypertrophic cardiomyopathy 26 (ClinVar).

How common is FLNC p.Ile37Val (c.109A>G) in the general population?

FLNC p.Ile37Val (c.109A>G) is absent from gnomAD v4.1 (gnomAD).

How is Muscle filaminopathy inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about FLNC p.Ile37Val (c.109A>G)?

AlphaMissense predicts likely pathogenic (score 0.9066) — an in-silico prediction, not a clinical call.

FLNC p.Ile37Val

c.109A>G · rs2536605068 · VCV1994262

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9066 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

myofibrillar myopathy 5

Computational evidence

Protein change
AlphaMissense	0.9066	likely pathogenic
REVEL	0.255	benign-leaning
SaProt	LLR -6.39	tolerated
⇒ AlphaMissense calls this damaging; REVEL and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9.1	phastCons 1
Regional constraint	o/e 0.34	constrained · MANE · 84 bp · p 5.6e-05 · regional, not allelic
Overall
CADD	24.6	PHRED · no single calibrated threshold — expert panels disagree

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

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.Ile37Val
Coding: c.109A>G
MANE Select: NM_001458
dbSNP: rs2536605068
Type: single nucleotide variant
Location: chr7:128830746 (GRCh38)
Gene constraint: LOEUF 0.424 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 37: the calponin-homology (ch) 1 domain; the 'actin-binding' region

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

Disease context

myofibrillar myopathy 5 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: distal myopathy with posterior leg and anterior hand involvement hypertrophic cardiomyopathy 26

For Muscle filaminopathy (Orphanet):

Inheritance: Autosomal dominant
Onset: Adult

Similar variants

FLNC p.Ile37Ser Uncertain significance ★ ⚠ same residue
FLNC p.Ile37fs Pathogenic ★ 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
FLNC c.2007+1G>A Likely pathogenic ★★ same condition
FLNC c.2550+1G>C 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-ile37val (accessed [today's date]).

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