Is FLT4 p.Gly4Ala (c.11G>C) pathogenic?

FLT4 p.Gly4Ala (c.11G>C) is classified Uncertain significance in FLT4 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-05-01). AlphaMissense: likely benign (0.0909); Ultra-rare (popmax 0.0748%, mid); Associated with Inborn genetic diseases.

What condition is associated with FLT4 p.Gly4Ala (c.11G>C)?

FLT4 p.Gly4Ala (c.11G>C) is associated with Inborn genetic diseases (ClinVar).

How common is FLT4 p.Gly4Ala (c.11G>C) in the general population?

FLT4 p.Gly4Ala (c.11G>C) is ultra-rare (popmax 0.0748%, mid) (gnomAD).

What do computational predictors say about FLT4 p.Gly4Ala (c.11G>C)?

AlphaMissense predicts likely benign (score 0.0909) — an in-silico prediction, not a clinical call.

FLT4 p.Gly4Ala

c.11G>C · VCV4620081

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.0909 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0748%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0909	likely benign
REVEL	0.045	moderately benign-leaning
SaProt	LLR -5.55	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.83	GERP -0.39, phastCons 0.001
Regional constraint	o/e 0.88	unconstrained · MANE · 19 kb · p 0.1 · regional, not allelic
Overall
CADD	17.41	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0748% Middle Eastern · 3/4,012 alleles

Filtering AF 0.0203% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0108%

Overall 0.00153% 22/1,440,406 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0748%	1,337
Remaining individualsnot grpmax-eligible	0.011%	9,098
Admixed American	0.00727%	13,748
African / African-American	0.00444%	22,515
European (non-Finnish)	0.000638%	156,698

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: FLT4
Protein: p.Gly4Ala
Coding: c.11G>C
MANE Select: NM_182925
Type: single nucleotide variant
Location: chr5:180649535 (GRCh38)
Gene constraint: LOEUF 0.265 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 72.82 · 2 PDB

Full FLT4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

FLT4 p.Gly1131Ser Pathogenic/Likely pathogenic ★★ same condition
FLT4 p.Ala702Ser Uncertain significance ★★ ⚠ same condition
FLT4 p.Arg1189His Uncertain significance ★★ ⚠ same condition
FLT4 p.Glu207Lys Uncertain significance ★★ ⚠ same condition
FLT4 p.Glu365Lys Uncertain significance ★★ ⚠ same condition
FLT4 p.Met1260Leu Uncertain significance ★★ ⚠ same condition
FLT4 p.Pro922Leu Uncertain significance ★★ ⚠ same condition
FLT4 p.Arg82Gln Likely benign ★★ 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/flt4-p-gly4ala (accessed [today's date]).

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