Is CDH1 p.Arg108Ser (c.324A>T) pathogenic?

CDH1 p.Arg108Ser (c.324A>T) is classified Uncertain significance in CDH1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-08-04). AlphaMissense: ambiguous (0.3602); Absent from gnomAD v4.1; Associated with hereditary diffuse gastric adenocarcinoma.

What condition is associated with CDH1 p.Arg108Ser (c.324A>T)?

CDH1 p.Arg108Ser (c.324A>T) is associated with hereditary diffuse gastric adenocarcinoma, hereditary neoplastic syndrome (ClinVar).

How common is CDH1 p.Arg108Ser (c.324A>T) in the general population?

CDH1 p.Arg108Ser (c.324A>T) is absent from gnomAD v4.1 (gnomAD).

How is Hereditary diffuse gastric cancer inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about CDH1 p.Arg108Ser (c.324A>T)?

AlphaMissense predicts ambiguous (score 0.3602) — an in-silico prediction, not a clinical call.

CDH1 p.Arg108Ser

c.324A>T · rs116542018 · VCV1692798

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

ambiguous

0.3602 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

hereditary diffuse gastric adenocarcinoma

Computational evidence

Protein change
AlphaMissense	0.3602	ambiguous
REVEL	0.161	moderately benign-leaning
SaProt	LLR -9.19	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	Δ0.84	donor gain · deltas
Pangolin	Δ0.55	gain · loss 0.00 · agrees with SpliceAI · independent
Constraint at this position
Conservation	phyloP 1.8	GERP -3.5, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 71 kb · p 0.52 · regional, not allelic
Overall
CADD	22.7	PHRED · no single calibrated threshold — expert panels disagree

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: CDH1
Protein: p.Arg108Ser
Coding: c.324A>T
MANE Select: NM_004360
dbSNP: rs116542018
Type: single nucleotide variant
Location: chr16:68801830 (GRCh38)
Gene constraint: LOEUF 0.514 · pLI 0.86 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 79.13 · 22 PDB

Full CDH1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary diffuse gastric adenocarcinoma — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary neoplastic syndrome

For Hereditary diffuse gastric cancer (Orphanet):

Inheritance: Autosomal dominant
Onset: Adult
Prevalence: 1-9 / 100 000 (Europe)

Similar variants

CDH1 p.Arg108= Benign ★★★ same residue
CDH1 p.Arg108Gly Conflicting classifications of pathogenicity ★ ⚠ same residue
CDH1 p.Arg108Lys Uncertain significance ★ ⚠ same residue
CDH1 p.Arg108fs Pathogenic ★★ same residue
CDH1 c.1008+2T>C Likely pathogenic ★★★ same condition
CDH1 c.1137+1G>A Pathogenic ★★★ same condition
CDH1 c.1137+2T>C Likely pathogenic ★★★ same condition
CDH1 c.1320+1G>C 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/cdh1-p-arg108ser (accessed [today's date]).

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