Is E4F1 p.Ser426Arg (c.1278C>G) pathogenic?

E4F1 p.Ser426Arg (c.1278C>G) is classified Uncertain significance in E4F1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-24). AlphaMissense: likely benign (0.2672); Very rare (popmax 0.0034%, sas).

How common is E4F1 p.Ser426Arg (c.1278C>G) in the general population?

E4F1 p.Ser426Arg (c.1278C>G) is very rare (popmax 0.0034%, sas) (gnomAD).

What do computational predictors say about E4F1 p.Ser426Arg (c.1278C>G)?

AlphaMissense predicts likely benign (score 0.2672) — an in-silico prediction, not a clinical call.

E4F1 p.Ser426Arg

c.1278C>G · VCV4246191

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2672 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0034%, sas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.2672	likely benign
REVEL	0.012	strongly benign-leaning
SaProt	LLR -7.68	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 -11	GERP -3.9
Regional constraint	o/e 0.99	unconstrained · MANE · 2,400 bp · p 0.81 · regional, not allelic
Overall
CADD	0.109	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 0.0034% South Asian · 3/88,306 alleles

Filtering AF 0.000902% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00045%

Overall 0.000485% 7/1,442,536 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0034%	29,435
Admixed American	0.00174%	57,592
European (non-Finnish)	0.000256%	390,405

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: E4F1
Protein: p.Ser426Arg
Coding: c.1278C>G
MANE Select: NM_004424
Type: single nucleotide variant
Location: chr16:2233893 (GRCh38)
Gene constraint: LOEUF 0.638 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 53.68
Residue 426: the 'mediates interaction with cdkn2a' region

Full E4F1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

E4F1 p.Arg490His Uncertain significance ★★ ⚠ same type
E4F1 p.Lys144Gln Likely pathogenic ★ ⚠ same type
E4F1 p.Ala124Val Uncertain significance ★ ⚠ same type
E4F1 p.Ala152Val Uncertain significance ★ ⚠ same type
E4F1 p.Ala15Thr Uncertain significance ★ ⚠ same type
E4F1 p.Ala21Asp Uncertain significance ★ ⚠ same type
E4F1 p.Ala21Ser Uncertain significance ★ ⚠ same type
E4F1 p.Ala292Thr Uncertain significance ★ ⚠ same type

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/e4f1-p-ser426arg (accessed [today's date]).

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