Is FLNB p.Ser2247= (c.6741G>A) pathogenic?

FLNB p.Ser2247= (c.6741G>A) is classified Benign/Likely benign in FLNB (ClinVar, Multiple submitters, 8 submitters; last evaluated 2026-01-30). Rare (popmax 0.297%, mid); Associated with FLNB-Related Spectrum Disorders.

What condition is associated with FLNB p.Ser2247= (c.6741G>A)?

FLNB p.Ser2247= (c.6741G>A) is associated with FLNB-Related Spectrum Disorders (ClinVar).

How common is FLNB p.Ser2247= (c.6741G>A) in the general population?

FLNB p.Ser2247= (c.6741G>A) is rare (popmax 0.297%, mid) (gnomAD).

FLNB p.Ser2247=

c.6741G>A · rs143400214 · VCV516325

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 8 submitters

gnomAD v4.1

Rare

rare (popmax 0.297%, mid)

Conditions

FLNB-Related Spectrum Disorders

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 -4.9	GERP -5.4
Overall
CADD	2.712	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.297% Middle Eastern · 18/6,062 alleles

Filtering AF 0.209% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.206%

Overall 0.179% 2,883/1,614,030 alleles · rare exomes 2,670/1,461,772 · genomes 213/152,258 · joint denominator

Ancestry group	Frequency	1 in
Ashkenazi Jewishnot grpmax-eligible	0.297%	336
Middle Easterngrpmax	0.297%	337
European (non-Finnish)	0.216%	463
Remaining individualsnot grpmax-eligible	0.176%	568
Admixed American	0.095%	1,053
South Asian	0.034%	2,938
African / African-American	0.0333%	3,002
Finnishnot grpmax-eligible	0.00937%	10,669

Ashkenazi Jewish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: FLNB
Protein: p.Ser2247=
Coding: c.6741G>A
MANE Select: NM_001457
dbSNP: rs143400214
Type: single nucleotide variant
Location: chr3:58154897 (GRCh38)
Gene constraint: LOEUF 0.504 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 76.96 · 23 PDB
Residue 2247: the 'interaction with inppl1' region

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

Disease context

FLNB-Related Spectrum Disorders

Similar variants

FLNB p.Ser2247Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
FLNB p.Glu1661Lys Uncertain significance ★★ ⚠ same condition
FLNB p.Glu78Gly Uncertain significance ★★ ⚠ same condition
FLNB p.His1117Arg Uncertain significance ★★ ⚠ same condition
FLNB p.Leu1440Pro Uncertain significance ★★ ⚠ same condition
FLNB p.Pro396Ser Uncertain significance ★★ ⚠ same condition
FLNB p.Ser1096Phe Uncertain significance ★★ ⚠ same condition
FLNB p.Ser188Cys Uncertain significance ★★ ⚠ 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/flnb-p-ser2247 (accessed [today's date]).

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