rs780718250

Variant names:

• chr8-31173032-G-T
• rs780718250
• NM_000553.6:c.4229G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000553.6(WRN):​c.4229G>T​(p.Trp1410Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,696 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. W1410R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: WRN NM_000553.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.49
• Publications: 0 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: Ambry Genetics, G2P, Orphanet, ClinGen, Labcorp Genetics (formerly Invitae)
• osteosarcoma

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

ENSG00000253961 (HGNC:58431):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

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.4229G>T	p.Trp1410Leu	missense	Exon 35 of 35	NP_000544.2	Q14191

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WRN	ENST00000298139.7	TSL:1 MANE Select	c.4229G>T	p.Trp1410Leu	missense	Exon 35 of 35	ENSP00000298139.5	Q14191
	WRN	ENST00000521620.5	TSL:1	n.2862G>T		non_coding_transcript_exon	Exon 23 of 23
	WRN	ENST00000966176.1		c.4244G>T	p.Trp1415Leu	missense	Exon 35 of 35	ENSP00000636235.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000120 AC: 3 AN: 251038 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000868

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000410 AC: 6 AN: 1461696 Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3 AN XY: 727134

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.0000894 AC: 4 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26126

East Asian (EAS) AF: 0.00 AC: 0 AN: 39656

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53378

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111938

Other (OTH) AF: 0.0000331 AC: 2 AN: 60384

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions

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	Uncertain	0.54
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.50	D
Eigen	Benign	-0.098
Eigen_PC	Benign	-0.043
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.72	T
M_CAP	Benign	0.051	D
MetaRNN	Uncertain	0.45	T
MetaSVM	Benign	-0.66	T
MutationAssessor	Benign	1.9	L
PhyloP100		3.5
PrimateAI	Uncertain	0.51	T
PROVEAN	Pathogenic	-5.8	D
REVEL	Benign	0.21
Sift	Uncertain	0.0080	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.020	B
Vest4		0.52
MutPred		0.35		Loss of MoRF binding (P = 0.0651)
MVP		0.71
MPC		0.48
ClinPred		0.97	D
GERP RS		4.0
Varity_R		0.63
gMVP		0.18
Mutation Taster		=75/25	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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: rs780718250; hg19: chr8-31030548;