rs1064795326

chr17-58709868-G-Achr17-58709868-G-Cchr17-58709868-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_058216.3(RAD51C):c.715G>A(p.Val239Met) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. V239E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 30)
• Consequence: RAD51C NM_058216.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.69

Genes affected

RAD51C (HGNC:9820): (RAD51 paralog C) This gene is a member of the RAD51 family. RAD51 family members are highly similar to bacterial RecA and Saccharomyces cerevisiae Rad51 and are known to be involved in the homologous recombination and repair of DNA. This protein can interact with other RAD51 paralogs and is reported to be important for Holliday junction resolution. Mutations in this gene are associated with Fanconi anemia-like syndrome. This gene is one of four localized to a region of chromosome 17q23 where amplification occurs frequently in breast tumors. Overexpression of the four genes during amplification has been observed and suggests a possible role in tumor progression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.757

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAD51C	NM_058216.3	c.715G>A	p.Val239Met	missense_variant	5/9	ENST00000337432.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAD51C	ENST00000337432.9	c.715G>A	p.Val239Met	missense_variant	5/9	1	NM_058216.3	P2

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jul 18, 2016

This variant is denoted RAD51C c.715G>A at the cDNA level, p.Val239Met (V239M) at the protein level, and results in the change of a Valine to a Methionine (GTG>ATG). This variant has not, to our knowledge, been published in the literature as pathogenic or benign. RAD51C Val239Met was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, suggesting it is not a common benign variant in these populations. Since Valine and Methionine share similar properties, this is considered a conservative amino acid substitution. RAD51C Val239Met occurs at a position where amino acids with properties similar to Valine are tolerated across species and is located in the ATPase domain and the Walker B box (Miller 2004, Kim 2011). In silico analyses are inconsistent regarding the effect this variant may have on protein structure and function. Based on currently available evidence, it is unclear whether RAD51C Val239Met is a pathogenic or benign variant. We consider it to be a variant of uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Benign	0.033	T;T;T;T;.
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.93	D;D;D;T;D
M_CAP	Benign	0.050	D
MetaRNN	Pathogenic	0.76	D;D;D;D;D
MetaSVM	Uncertain	0.11	D
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.47	T
Sift4G	Uncertain	0.0030	D;D;D;.;D
Polyphen		0.99	.;.;D;.;.
Vest4		0.58, 0.54
MutPred		0.55		.;Loss of stability (P = 0.0441);Loss of stability (P = 0.0441);.;.;
MVP		0.98
MPC		0.82
ClinPred		0.94	D
GERP RS		4.8
Varity_R		0.60
gMVP		0.60

Splicing

Name	Calibrated prediction	Score	Prediction
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

LitVar

Other links and lift over

dbSNP: rs1064795326; hg19: chr17-56787229;