5-132604829-C-G

Variant names:

• chr5-132604829-C-G
• rs181961360
• NM_005732.4:c.2548C>G

Variant summary

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

The NM_005732.4(RAD50):​c.2548C>G​(p.Arg850Gly) 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)
• Consequence: RAD50 NM_005732.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.54

Genes affected

RAD50 (HGNC:9816): (RAD50 double strand break repair protein) The protein encoded by this gene is highly similar to Saccharomyces cerevisiae Rad50, a protein involved in DNA double-strand break repair. This protein forms a complex with MRE11 and NBS1. The protein complex binds to DNA and displays numerous enzymatic activities that are required for nonhomologous joining of DNA ends. This protein, cooperating with its partners, is important for DNA double-strand break repair, cell cycle checkpoint activation, telomere maintenance, and meiotic recombination. Knockout studies of the mouse homolog suggest this gene is essential for cell growth and viability. Mutations in this gene are the cause of Nijmegen breakage syndrome-like disorder.[provided by RefSeq, Apr 2010]

ENSG00000283782 (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 rank	MANE	Protein	UniProt
RAD50	NM_005732.4	c.2548C>G	p.Arg850Gly	missense_variant	Exon 16 of 25	ENST00000378823.8	NP_005723.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAD50	ENST00000378823.8	c.2548C>G	p.Arg850Gly	missense_variant	Exon 16 of 25	1	NM_005732.4	ENSP00000368100.4
ENSG00000283782	ENST00000640655.2	c.2251C>G	p.Arg751Gly	missense_variant	Exon 17 of 26	5		ENSP00000491596.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1

Jan 09, 2015

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R850G variant (also known as c.2548C>G), located in coding exon 16 of the RAD50 gene, results from a C to G substitution at nucleotide position 2548. The arginine at codon 850 is replaced by glycine, an amino acid with dissimilar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6503 samples (13006 alleles) with coverage at this position. To date, this alteration has been detected with an allele frequency of approximately 0.003% (greater than 40,000 alleles tested) in our clinical cohort. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be benign by PolyPhen but deleterious by SIFT in silico analyses, respectively. Since supporting evidence is limited at this time, the clinical significance of p.R850G remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.26	.;.;.;T
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.95	.;.;D;D
M_CAP	Benign	0.0057	T
MetaRNN	Uncertain	0.43	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	2.0	.;.;.;M
PrimateAI	Benign	0.42	T
REVEL	Benign	0.17
Sift4G	Benign	0.18	.;.;.;T
Polyphen		0.88	.;.;.;P
Vest4		0.50
MutPred		0.46		.;.;.;Loss of MoRF binding (P = 0.028);
MVP		0.60
ClinPred		0.95	D
GERP RS		4.9
Varity_R		0.45
gMVP		0.39

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.19		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: rs181961360; hg19: chr5-131940521;