Is CHEK2 p.Pro536= (c.1608A>G) pathogenic?

CHEK2 p.Pro536= (c.1608A>G) is classified Likely benign in CHEK2 (ClinVar, Single submitter, 1 submitter; last evaluated 2014-09-22). Very rare (popmax 0.00167%, amr); Associated with hereditary neoplastic syndrome.

What condition is associated with CHEK2 p.Pro536= (c.1608A>G)?

CHEK2 p.Pro536= (c.1608A>G) is associated with hereditary neoplastic syndrome (ClinVar).

How common is CHEK2 p.Pro536= (c.1608A>G) in the general population?

CHEK2 p.Pro536= (c.1608A>G) is very rare (popmax 0.00167%, amr) (gnomAD).

CHEK2 p.Pro536=

c.1608A>G · rs17886242 · VCV183961

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00167%, amr)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.001	strongly benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -2	GERP -3.4
Overall
CADD	1.699	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00167% Admixed American · 1/59,836 alleles

Overall 6.27e-05% 1/1,594,312 alleles · very rare exomes 0/1,443,246 · genomes 1/151,066 · joint denominator

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: CHEK2
Protein: p.Pro536=
Coding: c.1608A>G
MANE Select: NM_007194
dbSNP: rs17886242
Type: single nucleotide variant
Location: chr22:28687921 (GRCh38)
Gene constraint: LOEUF 1.399 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 77.64 · 38 PDB
Residue 536: the 'disordered' region

Full CHEK2 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

Similar variants

CHEK2 p.Pro536Ser Uncertain significance ★★ ⚠ same residue
CHEK2 p.Pro536Arg Uncertain significance ★ ⚠ same residue
CHEK2 p.Pro536Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
CHEK2 p.Pro536Thr Likely benign ★ same residue
CHEK2 c.1008+1G>A Likely pathogenic ★★ same condition
CHEK2 c.1008+1G>T Likely pathogenic ★★ same condition
CHEK2 c.1008+2T>A Likely pathogenic ★★ same condition
CHEK2 c.1008+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/chek2-p-pro536 (accessed [today's date]).

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