Is BRCA2 p.Ala2306= (c.6918T>C) pathogenic?

BRCA2 p.Ala2306= (c.6918T>C) is classified Likely benign in BRCA2 (ClinVar, Expert panel, 9 submitters; last evaluated 2017-06-29). Absent from gnomAD v4.1; Associated with breast-ovarian cancer, familial, susceptibility to, 2.

What condition is associated with BRCA2 p.Ala2306= (c.6918T>C)?

BRCA2 p.Ala2306= (c.6918T>C) is associated with breast-ovarian cancer, familial, susceptibility to, 2, hereditary breast ovarian cancer syndrome, hereditary neoplastic syndrome (ClinVar).

How common is BRCA2 p.Ala2306= (c.6918T>C) in the general population?

BRCA2 p.Ala2306= (c.6918T>C) is absent from gnomAD v4.1 (gnomAD).

How is Hereditary breast and/or ovarian cancer syndrome inherited?

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

BRCA2 p.Ala2306=

c.6918T>C · rs876659441 · VCV231913

Likely benign Expert panel

Classification

Likely benign

ClinVar

Review

Expert panel ★★★☆

ClinVar · 9 submitters

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,575,458)

Conditions

breast-ovarian cancer, familial, susceptibility to, 2

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 1.9	GERP -0.17, phastCons 1
Overall
CADD	7.631	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

No allele count reported in gnomAD v4.1 (AN 1,575,458). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: BRCA2
Protein: p.Ala2306=
Coding: c.6918T>C
MANE Select: NM_000059
dbSNP: rs876659441
Type: single nucleotide variant
Location: chr13:32344634 (GRCh38)
Gene constraint: LOEUF 0.803 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Residue 2306: the 'interaction with hsf2bp' region

Full BRCA2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

breast-ovarian cancer, familial, susceptibility to, 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary breast ovarian cancer syndrome hereditary neoplastic syndrome

For Hereditary breast and/or ovarian cancer syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: Adult, Elderly

Similar variants

BRCA2 p.Ala2306Gly Uncertain significance ★★ same residue
BRCA2 p.Ala2306Ser Uncertain significance ★★ same residue
BRCA2 p.Ala2306Val Uncertain significance ★★ same residue
BRCA2 p.Ala2306Pro Conflicting classifications of pathogenicity ★ same residue
BRCA2 p.Ala2306Thr Conflicting classifications of pathogenicity ★ 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

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-ala2306 (accessed [today's date]).

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