chr17-7688443-G-A

Position:

• chr17-7688443-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The ENST00000316024.9(WRAP53):​c.-206G>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00368 in 594,934 control chromosomes in the GnomAD database, including 44 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0025 (2 hom., cov: 32)
  • Exomes 𝑓: 0.0041 (42 hom.)
• Consequence: WRAP53 ENST00000316024.9 5_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, single submitter B:2
• Conservation: PhyloP100: 2.73

Genes affected

WRAP53 (HGNC:25522): (WD repeat containing antisense to TP53) This gene encodes an essential component of the telomerase holoenzyme complex, a ribonucleoprotein complex required for telomere synthesis. This protein is enriched in Cajal bodies, nuclear sites of RNP processing that are important for telomerase function. It interacts with dyskerin, TERT and TERC, other components of active telomerase, and with small Cajal body RNAs (scaRNAs), which are involved in modifying splicing RNAs. This mRNA also functions as a p53 antisense transcript, that regulates endogenous p53 mRNA levels and further induction of p53 protein by targeting the 5' untranslated region of p53 mRNA. Alternatively spliced transcript variants which differ only in the 5' UTR have been found for this gene. [provided by RefSeq, Mar 2011]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.73).
• BP6: Variant 17-7688443-G-A is Benign according to our data. Variant chr17-7688443-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 369236.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00249 (380/152358) while in subpopulation EAS AF= 0.0403 (209/5186). AF 95% confidence interval is 0.0358. There are 2 homozygotes in gnomad4. There are 214 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WRAP53	NM_018081.2	c.-206G>A		5_prime_UTR_variant	1/10
WRAP53	NM_001143990.2	c.-1-205G>A		intron_variant
WRAP53	NM_001143991.2	c.-1-205G>A		intron_variant
WRAP53	NM_001143992.2			upstream_gene_variant		ENST00000396463.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WRAP53	ENST00000396463.7			upstream_gene_variant		1	NM_001143992.2	P1

Frequencies

GnomAD3 genomes AF: 0.00249 AC: 379 AN: 152240 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.000193

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00870

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0402

Gnomad SAS AF: 0.00228

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000221

Gnomad OTH AF: 0.00143

GnomAD4 exome AF: 0.00408 AC: 1807 AN: 442576 Hom.: 42 Cov.: 5 AF XY: 0.00385 AC XY: 890 AN XY: 231276

Gnomad4 AFR exome AF: 0.000245

Gnomad4 AMR exome AF: 0.0135

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0486

Gnomad4 SAS exome AF: 0.00148

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000179

Gnomad4 OTH exome AF: 0.00162

GnomAD4 genome AF: 0.00249 AC: 380 AN: 152358 Hom.: 2 Cov.: 32 AF XY: 0.00287 AC XY: 214 AN XY: 74510

Gnomad4 AFR AF: 0.000192

Gnomad4 AMR AF: 0.00882

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.0403

Gnomad4 SAS AF: 0.00207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000221

Gnomad4 OTH AF: 0.00142

Alfa AF: 0.00127 Hom.: 2

Bravo AF: 0.00373

Asia WGS AF: 0.0100 AC: 36 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

Submissions by phenotype

Li-Fraumeni syndrome Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Dyskeratosis congenita, autosomal recessive 3 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.73
CADD	Benign	14
DANN	Benign	0.85

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

Publications

LitVar

Other links and lift over

dbSNP: rs17551150; hg19: chr17-7591761;