17-35103293-C-G

Variant names:

• chr17-35103293-C-G
• rs1555567518
• NM_002878.4:c.699G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002878.4(RAD51D):​c.699G>C​(p.Glu233Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E233G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RAD51D NM_002878.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.730
• Publications: 0 publications found

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

ENSG00000267618 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.33086005).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RAD51D	NM_002878.4	c.699G>C	p.Glu233Asp	missense_variant	Exon 8 of 10	ENST00000345365.11	NP_002869.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAD51D	ENST00000345365.11	c.699G>C	p.Glu233Asp	missense_variant	Exon 8 of 10	1	NM_002878.4	ENSP00000338790.6
ENSG00000267618	ENST00000593039.5	c.222G>C	p.Glu74Asp	missense_variant	Exon 4 of 7	2		ENSP00000466834.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1

Apr 14, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.E233D variant (also known as c.699G>C), located in coding exon 8 of the RAD51D gene, results from a G to C substitution at nucleotide position 699. The glutamic acid at codon 233 is replaced by aspartic acid, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.41
BayesDel_addAF	Uncertain	0.037	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	21
DANN	Benign	0.93
DEOGEN2	Benign	0.15	.;.;.;T;T;.;.;.;.;T
Eigen	Benign	0.013
Eigen_PC	Benign	0.074
FATHMM_MKL	Benign	0.70	D
LIST_S2	Uncertain	0.91	D;D;D;.;D;D;D;D;D;D
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.33	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.75	T
MutationAssessor	Benign	0.82	.;.;.;L;L;.;.;.;.;.
PhyloP100		0.73
PROVEAN	Benign	-1.5	.;.;.;N;.;.;.;.;.;.
REVEL	Benign	0.10
Sift	Benign	0.38	.;.;.;T;.;.;.;.;.;.
Sift4G	Benign	0.20	T;T;T;T;T;T;T;T;T;.
Polyphen		0.62, 1.0	.;.;.;P;P;D;.;.;.;.
Vest4		0.24
MutPred		0.39		.;.;.;Gain of MoRF binding (P = 0.1108);Gain of MoRF binding (P = 0.1108);.;.;.;.;.;
MVP		0.84
MPC		0.32
ClinPred		0.90	D
GERP RS		3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.34
gMVP		0.63

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

Other links and lift over

dbSNP: rs1555567518; hg19: chr17-33430312;