Is CDKN2A p.Gly111Asp (c.332G>A) pathogenic?

CDKN2A p.Gly111Asp (c.332G>A) is classified Uncertain significance in CDKN2A (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-02-17). AlphaMissense: ambiguous (0.3488); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with CDKN2A p.Gly111Asp (c.332G>A)?

CDKN2A p.Gly111Asp (c.332G>A) is associated with hereditary neoplastic syndrome, familial melanoma (ClinVar).

How common is CDKN2A p.Gly111Asp (c.332G>A) in the general population?

CDKN2A p.Gly111Asp (c.332G>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CDKN2A p.Gly111Asp (c.332G>A)?

AlphaMissense predicts ambiguous (score 0.3488) — an in-silico prediction, not a clinical call.

CDKN2A p.Gly111Asp

c.332G>A · rs2131093568 · VCV1416042

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

ambiguous

0.3488 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,606,652)

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.3488	ambiguous
REVEL	0.859	moderately pathogenic-leaning
SaProt	LLR -9.25	tolerated
⇒ REVEL calls this damaging; SaProt does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.8	GERP 1.1, phastCons 1
Regional constraint	o/e 1.13	unconstrained · MANE · 6,595 bp · p 0.04 · regional, not allelic
Overall
CADD	23.6	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

No allele count reported in gnomAD v4.1 (AN 1,606,652). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: CDKN2A
Protein: p.Gly111Asp
Coding: c.332G>A
MANE Select: NM_000077
dbSNP: rs2131093568
Type: single nucleotide variant
Location: chr9:21971027 (GRCh38)
Gene constraint: LOEUF 0.791 · pLI 0.62 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 77.02 · 5 PDB
Residue 111: a β-strand; the 'disordered' region

Full CDKN2A gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: familial melanoma

Similar variants

CDKN2A p.Gly111= Uncertain significance ★★ same residue
CDKN2A p.Gly111Arg Uncertain significance ★★ ⚠ same residue
CDKN2A p.Gly111Ser Uncertain significance ★★ ⚠ same residue
CDKN2A p.Gly111Val Uncertain significance ★★ ⚠ same residue
CDKN2A p.Gly111Cys Uncertain significance ★ ⚠ same residue
CDKN2A p.Gly111fs Pathogenic ★ same residue
CDKN2A c.150+1G>A Likely pathogenic ★★ same condition
CDKN2A c.150+2T>G 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/cdkn2a-p-gly111asp (accessed [today's date]).

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