Is BARD1 p.Asn9= (c.27C>T) pathogenic?

BARD1 p.Asn9= (c.27C>T) is classified Benign/Likely benign in BARD1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-08-04). Very rare (popmax 0.00135%, afr); Associated with hereditary breast carcinoma.

What condition is associated with BARD1 p.Asn9= (c.27C>T)?

BARD1 p.Asn9= (c.27C>T) is associated with hereditary breast carcinoma, hereditary neoplastic syndrome (ClinVar).

How common is BARD1 p.Asn9= (c.27C>T) in the general population?

BARD1 p.Asn9= (c.27C>T) is very rare (popmax 0.00135%, afr) (gnomAD).

How is Hereditary breast cancer inherited?

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

BARD1 p.Asn9=

c.27C>T · rs1038616344 · VCV414110

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00135%, afr)

Conditions

hereditary breast carcinoma

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 1.7, phastCons 0.12
Overall
CADD	7.176	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00135% African / African-American · 1/73,978 alleles

Overall 0.000657% 1/152,214 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: BARD1
Protein: p.Asn9=
Coding: c.27C>T
MANE Select: NM_000465
dbSNP: rs1038616344
Type: single nucleotide variant
Location: chr2:214809543 (GRCh38)
Gene constraint: LOEUF 1.087 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 64.82 · 11 PDB
Residue 9: the 'disordered' region

Full BARD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary breast carcinoma — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary neoplastic syndrome

For Hereditary breast cancer (Orphanet):

Inheritance: Autosomal dominant, Multigenic/multifactorial
Onset: Adult, Elderly

Similar variants

BARD1 p.Asn9Asp Uncertain significance ★ ⚠ same residue
BARD1 p.Asn9Lys Uncertain significance ★ ⚠ same residue
BARD1 p.Asn9Ser Likely benign ★ same residue
BARD1 p.Asn9fs Pathogenic ★ same residue
BARD1 c.1314+1G>A Pathogenic/Likely pathogenic ★★ same condition
BARD1 c.1314+1G>T Likely pathogenic ★★ same condition
BARD1 c.1396-1G>A Likely pathogenic ★★ same condition
BARD1 c.1396-1G>C 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/bard1-p-asn9 (accessed [today's date]).

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