Is RAD51D p.Arg255= (c.765G>A) pathogenic?

RAD51D p.Arg255= (c.765G>A) is classified Benign/Likely benign in RAD51D (ClinVar, Multiple submitters, 10 submitters; last evaluated 2026-01-02). Rare (popmax 0.285%, eas); Associated with hereditary neoplastic syndrome.

What condition is associated with RAD51D p.Arg255= (c.765G>A)?

RAD51D p.Arg255= (c.765G>A) is associated with hereditary neoplastic syndrome, hereditary breast ovarian cancer syndrome, breast-ovarian cancer, familial, susceptibility to, 4 (ClinVar).

How common is RAD51D p.Arg255= (c.765G>A) in the general population?

RAD51D p.Arg255= (c.765G>A) is rare (popmax 0.285%, eas) (gnomAD).

RAD51D p.Arg255=

c.765G>A · rs751833940 · VCV239403

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 10 submitters

gnomAD v4.1

Rare

rare (popmax 0.285%, eas)

Conditions

hereditary neoplastic syndrome

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 -0.007	GERP 0.53, phastCons 0.8
Overall
CADD	8.353	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.285% East Asian · 128/44,894 alleles

Filtering AF 0.245% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.23%

Overall 0.00818% 132/1,613,868 alleles · rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.285%	351
Remaining individualsnot grpmax-eligible	0.0048%	20,828
Admixed American	0.00167%	59,982

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: RAD51D
Protein: p.Arg255=
Coding: c.765G>A
MANE Select: NM_002878
dbSNP: rs751833940
Type: single nucleotide variant
Location: chr17:35101339 (GRCh38)
Gene constraint: LOEUF 1.092 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 88.64 · 17 PDB
Residue 255: a β-strand

Full RAD51D 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-ovarian cancer, familial, susceptibility to, 4

Similar variants

RAD51D p.Arg255Lys Uncertain significance ★★ ⚠ same residue
RAD51D p.Arg255fs Likely pathogenic ★★ same residue
RAD51D c.144+1G>T Pathogenic/Likely pathogenic ★★ same condition
RAD51D c.145-2A>G Likely pathogenic ★★ same condition
RAD51D c.264-1G>T Likely pathogenic ★★ same condition
RAD51D c.264-2A>G Pathogenic/Likely pathogenic ★★ same condition
RAD51D c.346-1G>C Pathogenic/Likely pathogenic ★★ same condition
RAD51D c.480+1G>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/rad51d-p-arg255 (accessed [today's date]).

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