Is BRCA2 c.8487+8G>A pathogenic?

BRCA2 c.8487+8G>A is classified Benign/Likely benign in BRCA2 (ClinVar, Multiple submitters, 13 submitters; last evaluated 2026-03-17). Ultra-rare (popmax 0.0414%, afr); Associated with hereditary neoplastic syndrome.

What condition is associated with BRCA2 c.8487+8G>A?

BRCA2 c.8487+8G>A is associated with hereditary neoplastic syndrome, hereditary breast ovarian cancer syndrome, breast cancer (ClinVar).

How common is BRCA2 c.8487+8G>A in the general population?

BRCA2 c.8487+8G>A is ultra-rare (popmax 0.0414%, afr) (gnomAD).

BRCA2 c.8487+8G>A

rs81002838 · VCV38163

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 13 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0414%, afr)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
Splice region	donor +8	near-intronic (+8 nt from the splice site)
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.81	GERP -3.5
Non-coding constraint	Z 1.89	1 kb window · o/e 0.86 · regional · uncalibrated
Overall
CADD	0.664	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0414% African / African-American · 31/74,794 alleles

Filtering AF 0.03% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0261%

Overall 0.00255% 41/1,604,998 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0414%	2,413
Remaining individualsnot grpmax-eligible	0.0113%	8,885
Admixed American	0.00167%	59,988
South Asian	0.0011%	90,900
European (non-Finnish)	8.53e-05%	1,171,794

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: BRCA2
Coding: c.8487+8G>A
MANE Select: NM_000059
dbSNP: rs81002838
Type: single nucleotide variant
Location: chr13:32370565 (GRCh38)
Gene constraint: LOEUF 0.803 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)

Full BRCA2 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: hereditary breast ovarian cancer syndrome breast cancer breast-ovarian cancer, familial, susceptibility to, 2

Similar variants

BRCA2 c.316+1G>T Pathogenic ★★★ same condition
BRCA2 c.316+2T>C Pathogenic ★★★ same condition
BRCA2 c.316+5G>A Pathogenic ★★★ same condition
BRCA2 c.316+5G>C Pathogenic ★★★ same condition
BRCA2 c.475+1G>A Pathogenic ★★★ same condition
BRCA2 c.475+1G>T Pathogenic ★★★ same condition
BRCA2 c.476-2A>G Pathogenic ★★★ same condition
BRCA2 c.517-2A>G 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/brca2-c-8487-plus-8g-a (accessed [today's date]).

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