Is BRIP1 p.Ala135Val (c.404C>T) pathogenic?

BRIP1 p.Ala135Val (c.404C>T) is classified Uncertain significance in BRIP1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-08-21). AlphaMissense: ambiguous (0.5243); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with BRIP1 p.Ala135Val (c.404C>T)?

BRIP1 p.Ala135Val (c.404C>T) is associated with hereditary neoplastic syndrome, Fanconi anemia complementation group J, hereditary breast carcinoma (ClinVar).

How common is BRIP1 p.Ala135Val (c.404C>T) in the general population?

BRIP1 p.Ala135Val (c.404C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about BRIP1 p.Ala135Val (c.404C>T)?

AlphaMissense predicts ambiguous (score 0.5243) — an in-silico prediction, not a clinical call.

BRIP1 p.Ala135Val

c.404C>T · rs1295736478 · VCV1320474

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

ambiguous

0.5243 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.5243	ambiguous
REVEL	0.254	benign-leaning
SaProt	LLR -6.35	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>C here scores Δ0.21 · evaluated, not missing
Constraint at this position
Conservation	phyloP 12	GERP 2.2, phastCons 1
Regional constraint	o/e 0.92	unconstrained · MANE · 68 kb · p 0.065 · regional, not allelic
Overall
CADD	25.8	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: BRIP1
Protein: p.Ala135Val
Coding: c.404C>T
MANE Select: NM_032043
dbSNP: rs1295736478
Type: single nucleotide variant
Location: chr17:61849232 (GRCh38)
Gene constraint: LOEUF 0.848 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 64.19 · 6 PDB
Residue 135: the helicase atp-binding domain

Full BRIP1 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: Fanconi anemia complementation group J hereditary breast carcinoma

Similar variants

BRIP1 p.Ala135Gly Uncertain significance ★★ ⚠ same residue
BRIP1 p.Ala135Ser Uncertain significance ★★ ⚠ same residue
BRIP1 p.Ala135= Benign ★ same residue
BRIP1 p.Ala135fs Pathogenic/Likely pathogenic ★★ same residue
BRIP1 c.1140+1G>A Likely pathogenic ★★ same condition
BRIP1 c.1141-2A>C Likely pathogenic ★★ same condition
BRIP1 c.1141-2A>G Likely pathogenic ★★ same condition
BRIP1 c.1141-2A>T 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/brip1-p-ala135val (accessed [today's date]).

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