Is BRCA2 p.Val159= (c.477G>A) pathogenic?

BRCA2 p.Val159= (c.477G>A) is classified Uncertain significance in BRCA2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-05-28). Very rare (popmax 8.48e-05%, nfe); Associated with hereditary neoplastic syndrome.

What condition is associated with BRCA2 p.Val159= (c.477G>A)?

BRCA2 p.Val159= (c.477G>A) is associated with hereditary neoplastic syndrome, hereditary breast ovarian cancer syndrome (ClinVar).

How common is BRCA2 p.Val159= (c.477G>A) in the general population?

BRCA2 p.Val159= (c.477G>A) is very rare (popmax 8.48e-05%, nfe) (gnomAD).

BRCA2 p.Val159=

c.477G>A · VCV3825344

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 8.48e-05%, nfe)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal.
Splicing
SpliceAI	Δ0.94	acceptor gain · deltas
Pangolin	Δ0.71	gain · loss 0.22 · agrees with SpliceAI · independent
Constraint at this position
Conservation	phyloP 0.59	GERP -3.9, phastCons 0.22
Overall
CADD	16.55	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.48e-05% European (non-Finnish) · 1/1,179,376 alleles

Overall 6.84e-05% 1/1,460,982 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: BRCA2
Protein: p.Val159=
Coding: c.477G>A
MANE Select: NM_000059
Type: single nucleotide variant
Location: chr13:32326243 (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

Similar variants

BRCA2 p.Val159Met Pathogenic/Likely pathogenic ★★ ⚠ same residue
BRCA2 p.Val159Ala Uncertain significance ★★ ⚠ same residue
BRCA2 p.Val159Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
BRCA2 p.Val159Glu Uncertain significance ⚠ same residue
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

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-p-val159 (accessed [today's date]).

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