5-69382055-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_133338.3(RAD17):c.506C>G(p.Thr169Ser) variant causes a missense, splice region 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. 17/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RAD17 NM_133338.3 missense, splice_region
• Scores: Splicing: ADA: 0.00006462
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0460

Genes affected

RAD17 (HGNC:9807): (RAD17 checkpoint clamp loader component) The protein encoded by this gene is highly similar to the gene product of Schizosaccharomyces pombe rad17, a cell cycle checkpoint gene required for cell cycle arrest and DNA damage repair in response to DNA damage. This protein shares strong similarity with DNA replication factor C (RFC), and can form a complex with RFCs. This protein binds to chromatin prior to DNA damage and is phosphorylated by the checkpoint kinase ATR following damage. This protein recruits the RAD1-RAD9-HUS1 checkpoint protein complex onto chromatin after DNA damage, which may be required for its phosphorylation. The phosphorylation of this protein is required for the DNA-damage-induced cell cycle G2 arrest, and is thought to be a critical early event during checkpoint signaling in DNA-damaged cells. Multiple alternatively spliced transcript variants of this gene, which encode four distinct protein isoforms, have been reported. Two pseudogenes, located on chromosomes 7 and 13, have been identified. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06539786).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAD17	NM_133338.3	c.506C>G	p.Thr169Ser	missense_variant, splice_region_variant	7/19	ENST00000354868.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAD17	ENST00000354868.10	c.506C>G	p.Thr169Ser	missense_variant, splice_region_variant	7/19	1	NM_133338.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 05, 2023

The c.539C>G (p.T180S) alteration is located in exon 4 (coding exon 4) of the RAD17 gene. This alteration results from a C to G substitution at nucleotide position 539, causing the threonine (T) at amino acid position 180 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.068
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.64
Cadd	Benign	5.8
Dann	Benign	0.47
Eigen	Benign	-1.0
Eigen_PC	Benign	-0.98
FATHMM_MKL	Benign	0.16	N
M_CAP	Benign	0.0065	T
MetaRNN	Benign	0.038	T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.97	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.25	T
PROVEAN	Benign	0.050	N;N;N;N;N;N;.;N;N;N;N;N;N
REVEL	Benign	0.029
Sift	Benign	0.43	T;T;T;T;T;T;.;T;T;T;T;T;T
Sift4G	Benign	0.93	T;T;T;T;T;T;T;T;D;T;T;T;T
Polyphen		0.0	B;B;B;.;B;B;B;.;.;B;B;.;B
Vest4		0.069
MutPred		0.44		.;Gain of disorder (P = 0.0286);.;.;.;.;.;.;.;.;.;.;Gain of disorder (P = 0.0286);
MVP		0.38
MPC		0.051
ClinPred		0.020	T
GERP RS		0.22
Varity_R		0.015
gMVP		0.22

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000065
dbscSNV1_RF	Benign	0.018
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: rs1234965480; hg19: chr5-68677882;