Is FLNC p.Thr2175Pro (c.6523A>C) pathogenic?

FLNC p.Thr2175Pro (c.6523A>C) is classified Likely benign in FLNC (ClinVar, Single submitter, 1 submitter; last evaluated 2022-12-06). AlphaMissense: ambiguous (0.5458); Very rare (popmax 0.00133%, afr); Associated with myofibrillar myopathy 5.

What condition is associated with FLNC p.Thr2175Pro (c.6523A>C)?

FLNC p.Thr2175Pro (c.6523A>C) is associated with myofibrillar myopathy 5, distal myopathy with posterior leg and anterior hand involvement, hypertrophic cardiomyopathy 26 (ClinVar).

How common is FLNC p.Thr2175Pro (c.6523A>C) in the general population?

FLNC p.Thr2175Pro (c.6523A>C) is very rare (popmax 0.00133%, afr) (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.Thr2175Pro (c.6523A>C)?

AlphaMissense predicts ambiguous (score 0.5458) — an in-silico prediction, not a clinical call.

FLNC p.Thr2175Pro

c.6523A>C · rs1358590777 · VCV1042329

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.5458 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00133%, afr)

Conditions

myofibrillar myopathy 5

Computational evidence

Protein change
AlphaMissense	0.5458	ambiguous
REVEL	0.584	indeterminate
SaProt	—	not scored · why
Splicing
SpliceAI	Δ0.21	acceptor loss, 20 bp away · masked 0 · deltas
Constraint at this position
Conservation	phyloP 11	phastCons 1
Regional constraint	o/e 0.66	unconstrained · MANE · 5,636 bp · p 8.4e-23 · regional, not allelic
Overall
CADD	24.2	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

Grpmax group 0.00133% African / African-American · 1/74,932 alleles

Overall 6.2e-05% 1/1,613,132 alleles · very rare exomes 0/1,460,950 · genomes 1/152,182 · 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.Thr2175Pro
Coding: c.6523A>C
MANE Select: NM_001458
dbSNP: rs1358590777
Type: single nucleotide variant
Location: chr7:128854012 (GRCh38)
Gene constraint: LOEUF 0.424 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 2175: the 'required for interaction with pgm5' region; the 'intradomain insert; mediate targeting to z lines' 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 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
FLNC c.2550+2T>C Pathogenic/Likely pathogenic ★★ same condition
FLNC c.2930-1G>A Pathogenic/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-thr2175pro (accessed [today's date]).

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