17-35119534-G-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP3BS1_SupportingBS2

The NM_002878.4(RAD51D):c.80C>A(p.Thr27Lys) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000546 in 1,611,852 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T27I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

RAD51D
NM_002878.4 missense, splice_region

Scores

Splicing: ADA: 0.9724

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:2

Conservation

PhyloP100: 6.20

Publications

2 publications found

Variant links:

Genes affected

RAD51D (HGNC:9823): (RAD51 paralog D) The protein encoded by this gene is a member of the RAD51 protein family. RAD51 family members are highly similar to bacterial RecA and Saccharomyces cerevisiae Rad51, which are known to be involved in the homologous recombination and repair of DNA. This protein forms a complex with several other members of the RAD51 family, including RAD51L1, RAD51L2, and XRCC2. The protein complex formed with this protein has been shown to catalyze homologous pairing between single- and double-stranded DNA, and is thought to play a role in the early stage of recombinational repair of DNA. Alternative splicing results in multiple transcript variants. Read-through transcription also exists between this gene and the downstream ring finger and FYVE-like domain containing 1 (RFFL) gene. [provided by RefSeq, Jan 2011]

RAD51D Gene-Disease associations (from GenCC):

breast-ovarian cancer, familial, susceptibility to, 4
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
hereditary breast ovarian cancer syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary breast carcinoma
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

RAD51D links:

ENSG00000267618 (HGNC:):

ENSG00000267618 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

BS1

Variant frequency is greater than expected in population eas. GnomAdExome4 allele frequency = 0.0000582 (85/1459516) while in subpopulation EAS AF = 0.00209 (83/39694). AF 95% confidence interval is 0.00173. There are 0 homozygotes in GnomAdExome4. There are 49 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAdExome4 at 85 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RAD51D	NM_002878.4 link	c.80C>A	p.Thr27Lys	missense_variant, splice_region_variant	Exon 1 of 10	ENST00000345365.11	NP_002869.3	O75771-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAD51D	ENST00000345365.11 link	c.80C>A	p.Thr27Lys	missense_variant, splice_region_variant	Exon 1 of 10	1	NM_002878.4	ENSP00000338790.6		O75771-1
ENSG00000267618	ENST00000593039.5 link	c.3+1757C>A		intron_variant	Intron 1 of 6	2		ENSP00000466834.1		K7EN88

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000811

AC:

AN:

246624

AF XY:

0.0000149

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000582

AC:

AN:

1459516

Hom.:

Cov.:

AF XY:

0.0000675

AC XY:

AN XY:

726152

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00209

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51230

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111880

Other (OTH)

AF:

0.0000331

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74488

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41578

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000580

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:7Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 4

Uncertain:2Benign:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nov 07, 2022

Baylor Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces threonine, which is neutral and polar, with lysine, which is basic and polar, at codon 27 of the RAD51D protein (p.Thr27Lys). This variant is present in population databases (rs139642328, gnomAD 0.01%). This missense change has been observed in individual(s) with breast cancer (PMID: 35264596). ClinVar contains an entry for this variant (Variation ID: 410557). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Hereditary cancer-predisposing syndrome

Uncertain:2

Jun 12, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.T27K variant (also known as c.80C>A), located in coding exon 1 of the RAD51D gene, results from a C to A substitution at nucleotide position 80. The threonine at codon 27 is replaced by lysine, an amino acid with similar properties. This variant has been identified in 100/12503 unselected Japanese colorectal cancer patients and in 224/23705 controls (Fujita M et al. Clin Gastroenterol Hepatol, 2020 Dec;:). This alteration was also detected in a cohort of 1663 Brazilian breast cancer patients who underwent hereditary multigene panel testing (Guindalini RSC et al. Sci Rep, 2022 Mar;12:4190). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -

Dec 06, 2023

Color Diagnostics, LLC DBA Color Health

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This missense variant replaces threonine with lysine at codon 27 of the RAD51D protein. Computational prediction suggests that this variant may not impact protein structure and function. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with breast cancer (PMID: 35264596). This variant also has been reported in pancreatic cancer and colorectal cancer case-control studies in 9/1005 pancreatic cancer cases and 224/23705 unaffected individuals and 100/12501 colorectal cancer cases and 224/23702 unaffected individuals, respectively (PMID: 32980694, 33309985). This variant has been identified in 2/246624 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Hereditary breast ovarian cancer syndrome

Uncertain:2

May 01, 2019

Cancer Genomics Group, Japanese Foundation For Cancer Research

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

- -

Jul 02, 2018

Mendelics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Nov 22, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The RAD51D c.80C>A (p.Thr27Lys) variant has been reported in the published literature in individuals affected with breast cancer (PMID: 35264596 (2022)), colorectal cancer (PMID: 33309985 (2022)), pancreatic cancer (PMID: 32980694 (2020)), and reportedly healthy individuals (PMIDs: 33309985 (2022), 32980694 (2020)). The frequency of this variant in the general population, 0.0000081 (2/246624 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -

not specified

Benign:1

Jan 27, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: RAD51D c.80C>A (p.Thr27Lys) results in a non-conservative amino acid change located in the DNA recombination and repair protein Rad51-like, C-terminal (IPR013632) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. Consensus agreement among computation tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.0011 in 321790 control chromosomes. The observed variant frequency is approximately 9 fold of the estimated maximal expected allele frequency for a pathogenic variant in RAD51D causing Hereditary Breast And Ovarian Cancer Syndrome phenotype (0.00013). c.80C>A has been reported in the literature in individuals affected with Hereditary Breast And Ovarian Cancer Syndrome, without strong evidence for causality (Guindalini_2022). A large case-control study evaluating Biliary tract cancer risk reported the variant insignificantly distributed between cases and controls (Guindalini_2022). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 35264596, 36243179). ClinVar contains an entry for this variant (Variation ID: 410557). Based on the evidence outlined above, the variant was classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.51

BayesDel_addAF

Uncertain

0.072

BayesDel_noAF

Uncertain

0.090

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.68

D;D;.;.

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.82

.;T;T;T

M_CAP

Uncertain

0.20

MetaRNN

Benign

0.42

T;T;T;T

MetaSVM

Benign

-0.38

MutationAssessor

Uncertain

2.7

M;M;M;M

PhyloP100

6.2

PROVEAN

Uncertain

-3.7

D;D;D;.

REVEL

Uncertain

0.38

Sift

Uncertain

0.0060

D;D;D;.

Sift4G

Uncertain

0.033

D;D;D;D

Polyphen

0.75

P;P;D;.

Vest4

0.88

MVP

0.82

MPC

0.35

ClinPred

0.93

GERP RS

4.5

PromoterAI

0.13

Neutral

(source)

Varity_R

0.63

gMVP

0.87

Mutation Taster

=55/45

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.97

dbscSNV1_RF

Pathogenic

0.75

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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17-35119534-G-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over