NM_000553.6:c.1171T>G

Variant names:

• chr8-31081198-T-G
• rs1060500062
• NM_000553.6:c.1171T>G

Variant summary

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

The NM_000553.6(WRN):​c.1171T>G​(p.Cys391Gly) 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. 15/22 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. C391F) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: WRN NM_000553.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.26
• Publications: 1 publications found

Genes affected

WRN (HGNC:12791): (WRN RecQ like helicase) This gene encodes a member of the RecQ subfamily of DNA helicase proteins. The encoded nuclear protein is important in the maintenance of genome stability and plays a role in DNA repair, replication, transcription and telomere maintenance. This protein contains a N-terminal 3' to 5' exonuclease domain, an ATP-dependent helicase domain and RQC (RecQ helicase conserved region) domain in its central region, and a C-terminal HRDC (helicase RNase D C-terminal) domain and nuclear localization signal. Defects in this gene are the cause of Werner syndrome, an autosomal recessive disorder characterized by accelerated aging and an elevated risk for certain cancers. [provided by RefSeq, Aug 2017]

WRN Gene-Disease associations (from GenCC):

• Werner syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet, G2P, Ambry Genetics
• osteosarcoma

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp

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=0.34452692).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000553.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WRN	NM_000553.6	MANE Select	c.1171T>G	p.Cys391Gly	missense	Exon 9 of 35	NP_000544.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WRN	ENST00000298139.7	TSL:1 MANE Select	c.1171T>G	p.Cys391Gly	missense	Exon 9 of 35	ENSP00000298139.5
	WRN	ENST00000966176.1		c.1171T>G	p.Cys391Gly	missense	Exon 9 of 35	ENSP00000636235.1
	WRN	ENST00000860283.1		c.1171T>G	p.Cys391Gly	missense	Exon 9 of 35	ENSP00000530342.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Werner syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.096	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	14
DANN	Benign	0.90
DEOGEN2	Uncertain	0.49	T
Eigen	Benign	-0.036
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.45	N
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.34	T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	1.9	L
PhyloP100		1.3
PrimateAI	Benign	0.45	T
PROVEAN	Pathogenic	-4.8	D
REVEL	Benign	0.20
Sift	Benign	0.11	T
Sift4G	Benign	0.23	T
Polyphen		0.96	D
Vest4		0.17
MutPred		0.46		Loss of stability (P = 0.0068)
MVP		0.70
MPC		0.082
ClinPred		0.61	D
GERP RS		4.5
Varity_R		0.16
gMVP		0.089
Mutation Taster		=94/6	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs1060500062; hg19: chr8-30938714;