17-35103276-C-A

Position:

• chr17-35103276-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_002878.4(RAD51D):​c.716G>T​(p.Arg239Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RAD51D NM_002878.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.43

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]

RAD51L3-RFFL (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAD51D	NM_002878.4	c.716G>T	p.Arg239Leu	missense_variant	8/10	ENST00000345365.11	NP_002869.3
RAD51L3-RFFL	NR_037714.1	n.468G>T		non_coding_transcript_exon_variant	4/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAD51D	ENST00000345365.11	c.716G>T	p.Arg239Leu	missense_variant	8/10	1	NM_002878.4	ENSP00000338790	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1458652 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 725278

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 4 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 11, 2019

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with RAD51D-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces arginine with leucine at codon 239 of the RAD51D protein (p.Arg239Leu). The arginine residue is weakly conserved and there is a moderate physicochemical difference between arginine and leucine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Benign	23
DANN	Benign	0.97
DEOGEN2	Benign	0.28	.;.;.;T;T;.;.;.;.;T
Eigen	Benign	-0.044
Eigen_PC	Benign	0.067
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.78	T;T;T;.;T;T;T;T;T;T
M_CAP	Benign	0.061	D
MetaRNN	Uncertain	0.51	D;D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.58	T
MutationAssessor	Benign	1.9	.;.;.;L;L;.;.;.;.;.
MutationTaster	Benign	0.51	D;D;D;D;D;D
PROVEAN	Uncertain	-3.0	.;.;.;D;.;.;.;.;.;.
REVEL	Benign	0.14
Sift	Benign	0.14	.;.;.;T;.;.;.;.;.;.
Sift4G	Benign	0.19	T;T;D;T;T;T;T;D;D;.
Polyphen		0.012, 0.99	.;.;.;B;B;D;.;.;.;.
Vest4		0.35
MutPred		0.46		.;.;.;Loss of MoRF binding (P = 0.0045);Loss of MoRF binding (P = 0.0045);.;.;.;.;.;
MVP		0.90
MPC		0.44
ClinPred		0.94	D
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.16
gMVP		0.58

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs780921112; hg19: chr17-33430295;