Is EGFR p.Arg324Ser (c.970C>A) pathogenic?

EGFR p.Arg324Ser (c.970C>A) is classified Uncertain significance in EGFR (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-10). AlphaMissense: likely pathogenic (0.6716); Absent from gnomAD v4.1; Associated with EGFR-related lung cancer.

What condition is associated with EGFR p.Arg324Ser (c.970C>A)?

EGFR p.Arg324Ser (c.970C>A) is associated with EGFR-related lung cancer (ClinVar).

How common is EGFR p.Arg324Ser (c.970C>A) in the general population?

EGFR p.Arg324Ser (c.970C>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about EGFR p.Arg324Ser (c.970C>A)?

AlphaMissense predicts likely pathogenic (score 0.6716) — an in-silico prediction, not a clinical call.

EGFR p.Arg324Ser

c.970C>A · VCV3715587

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6716 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

EGFR-related lung cancer

Computational evidence

Protein change
AlphaMissense	0.6716	likely pathogenic
REVEL	0.5	indeterminate
SaProt	LLR -10.91	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.9	GERP 1.1, phastCons 1
Regional constraint	o/e 0.75	unconstrained · MANE · 137 kb · p 6e-07 · regional, not allelic
Overall
CADD	24.1	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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

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: EGFR
Protein: p.Arg324Ser
Coding: c.970C>A
MANE Select: NM_005228
Type: single nucleotide variant
Location: chr7:55155910 (GRCh38)
Gene constraint: LOEUF 0.475 · pLI 0.98 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 76.29 · 393 PDB
Residue 324: a β-strand; a disulfide bond

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

Disease context

EGFR-related lung cancer — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

EGFR p.Arg324His Uncertain significance ★★ ⚠ same residue
EGFR p.Arg324Pro Uncertain significance ★★ ⚠ same residue
EGFR p.Arg324Cys Uncertain significance ★ ⚠ same residue
EGFR p.Arg324Leu Uncertain significance ★ ⚠ same residue
EGFR p.Arg324Gly Uncertain significance ★ ⚠ same residue
EGFR c.1499-3C>T Uncertain significance ★★ same condition
EGFR c.2061+5G>A Uncertain significance ★★ same condition
EGFR c.2061+5G>T 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/egfr-p-arg324ser (accessed [today's date]).

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