CDKN2A p.Arg80fs
c.238del · rs1563889584 · VCV579066
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Consequence | frameshift | predicted loss-of-function in a haploinsufficient gene (ClinGen) |
|---|---|---|
| NMD | predicted | premature termination codon in exon 2 of 3 |
| Splicing | ||
| SpliceAI | — | not assessed · substitutions only |
| Constraint at this position | ||
| Conservation | phyloP 0.62 | GERP 1.2, phastCons 0.006 |
Predicted loss-of-function is descriptive, not an applied PVS1 code.
Population frequency
No gnomAD frequency available for this variant. 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.Arg80fs
- Coding
- c.238del
- MANE Select
- NM_000077
- dbSNP
- rs1563889584
- Type
- Deletion
- Location
- chr9:21971121 (GRCh38)
- Gene constraint
- LOEUF 0.791 · pLI 0.62 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 77.02 · 5 PDB
- Residue 80
- a UniProt-annotated variant site (in a head and neck tumor); a UniProt-annotated variant site (in cmm2; loss of cdk4 binding); the 'disordered' region
Disease context
familial melanoma — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatmentsFor Familial melanoma (Orphanet):
- Inheritance
- Autosomal dominant, Multigenic/multifactorial
- Onset
- Adult
- Prevalence
- 1-9 / 100 000 (Europe)
Similar variants
- CDKN2A p.Arg80Ter Pathogenic/Likely pathogenic ★★ same residue
- CDKN2A p.Arg80Gln Uncertain significance ★★ ⚠ same residue
- CDKN2A p.Arg80Pro Uncertain significance ★★ ⚠ same residue
- CDKN2A c.193+1del Likely pathogenic ★★ same condition
- CDKN2A c.457+1_457+10del Pathogenic/Likely pathogenic ★★ same condition
- CDKN2A p.Ala76fs Pathogenic/Likely pathogenic ★★ same condition
- CDKN2A p.Glu120fs Pathogenic ★★ same condition
- CDKN2A p.His123fs 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-arg80fs (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown