Is TP53 p.Asn235= (c.705C>T) pathogenic?

TP53 p.Asn235= (c.705C>T) is classified Benign/Likely benign in TP53 (ClinVar, Multiple submitters, 5 submitters; last evaluated 2025-04-03). Very rare (popmax 0.0011%, sas); Associated with Li-Fraumeni syndrome 1.

What condition is associated with TP53 p.Asn235= (c.705C>T)?

TP53 p.Asn235= (c.705C>T) is associated with Li-Fraumeni syndrome 1, hereditary neoplastic syndrome, Li-Fraumeni syndrome (ClinVar).

How common is TP53 p.Asn235= (c.705C>T) in the general population?

TP53 p.Asn235= (c.705C>T) is very rare (popmax 0.0011%, sas) (gnomAD).

TP53 p.Asn235=

c.705C>T · rs750893877 · VCV1096768

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 5 submitters

gnomAD v4.1

Rare

very rare (popmax 0.0011%, sas)

Conditions

Li-Fraumeni syndrome 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.2	GERP -4.9, phastCons 1
Overall
CADD	12.23	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0011% South Asian · 1/91,064 alleles

Overall 6.84e-05% 1/1,461,258 alleles · very rare

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: TP53
Protein: p.Asn235=
Coding: c.705C>T
MANE Select: NM_000546
dbSNP: rs750893877
Type: single nucleotide variant
Location: chr17:7674258 (GRCh38)
Gene constraint: LOEUF 0.449 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 75.83 · 321 PDB
Residue 235: a DNA-binding region; the 'interaction with axin1' region; a β-strand; the 'interaction with ccar2' region; the 'interaction with hipk1' region; the 'required for interaction with znf385a' region; a UniProt-annotated variant site (in an adrenocortical carcinoma with no family history; germline mutation and in sporadic cancers; somatic mutation); a UniProt-annotated variant site (in a sporadic cancer; somatic mutation); the 'required for interaction with fbxo42' region; a UniProt-annotated variant site (in sporadic cancers; somatic mutation); a UniProt-annotated variant site (in a sporadic cancer; somatic mutation; requires 2 nucleotide substitutions); a UniProt-annotated variant site (in lfs; germline mutation and in sporadic cancers; somatic mutation)

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

Disease context

Li-Fraumeni syndrome 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary neoplastic syndrome Li-Fraumeni syndrome

Similar variants

TP53 p.Asn235Ser Benign ★★★ same residue
TP53 p.Asn235Ile Uncertain significance ★★ ⚠ same residue
TP53 p.Asn235Asp Conflicting classifications of pathogenicity ★ ⚠ same residue
TP53 p.Asn235Tyr Uncertain significance ★ ⚠ same residue
TP53 p.Asn235_Tyr236insTer Pathogenic ★ same residue
TP53 p.Asn235_Tyr236del Conflicting classifications of pathogenicity ★ same residue
TP53 p.Asn235del Uncertain significance ★ same residue
TP53 c.375+5G>A 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-asn235 (accessed [today's date]).

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