Is TP53 p.Lys373Arg (c.1118A>G) pathogenic?

TP53 p.Lys373Arg (c.1118A>G) is classified Conflicting classifications of pathogenicity in TP53 (ClinVar, Conflicting submitters, 6 submitters; last evaluated 2025-12-17). AlphaMissense: likely benign (0.0834); Absent from gnomAD v4.1; Associated with Li-Fraumeni syndrome.

What condition is associated with TP53 p.Lys373Arg (c.1118A>G)?

TP53 p.Lys373Arg (c.1118A>G) is associated with Li-Fraumeni syndrome, hereditary neoplastic syndrome (ClinVar).

How common is TP53 p.Lys373Arg (c.1118A>G) in the general population?

TP53 p.Lys373Arg (c.1118A>G) is absent from gnomAD v4.1 (gnomAD).

How is Li-Fraumeni syndrome inherited?

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

What do computational predictors say about TP53 p.Lys373Arg (c.1118A>G)?

AlphaMissense predicts likely benign (score 0.0834) — an in-silico prediction, not a clinical call.

TP53 p.Lys373Arg

c.1118A>G · rs1567540504 · VCV577458

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 6 submitters

AlphaMissense

likely benign

0.0834 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

Li-Fraumeni syndrome

Computational evidence

Protein change
AlphaMissense	0.0834	likely benign
REVEL	0.407	indeterminate
SaProt	LLR -6.02	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.1	GERP 1.3, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 6,982 bp · p 0.0085 · regional, not allelic
Overall
CADD	21.6	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

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: TP53
Protein: p.Lys373Arg
Coding: c.1118A>G
MANE Select: NM_000546
dbSNP: rs1567540504
Type: single nucleotide variant
Location: chr17:7669673 (GRCh38)
Gene constraint: LOEUF 0.449 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 75.83 · 321 PDB
Residue 373: the 'interaction with carm1' region; the 'disordered' region; the 'basic (repression of dna-binding)' region; a modified residue (n6,n6-dimethyllysine; by ehmt1 and ehmt2; alternate); a modified residue (n6-acetyllysine; alternate)

Full TP53 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Li-Fraumeni syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary neoplastic syndrome

For Li-Fraumeni syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: All ages
Prevalence: 1-9 / 100 000 (United Kingdom)

Similar variants

TP53 p.Lys373= Benign/Likely benign ★★ same residue
TP53 p.Lys373Asn Uncertain significance ★ same residue
TP53 p.Lys373Met Uncertain significance ★ same residue
TP53 p.Lys373fs Uncertain significance ★★★ same residue
TP53 c.375+5G>A Likely pathogenic ★★★ same condition
TP53 c.919+1G>A Pathogenic ★★★ same condition
TP53 c.97-1G>A Pathogenic ★★★ same condition
TP53 p.Ala138Pro 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/tp53-p-lys373arg (accessed [today's date]).

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