6-131808023-G-A

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BA1

The NM_006208.3(ENPP1):c.-13G>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 0.00335 in 978,330 control chromosomes in the GnomAD database, including 88 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.015 ( 51 hom., cov: 23)

Exomes 𝑓: 0.0014 ( 37 hom. )

Consequence

ENPP1
NM_006208.3 5_prime_UTR

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 1.40

Variant links:

Genes affected

ENPP1 (HGNC:3356): (ectonucleotide pyrophosphatase/phosphodiesterase 1) This gene is a member of the ecto-nucleotide pyrophosphatase/phosphodiesterase (ENPP) family. The encoded protein is a type II transmembrane glycoprotein comprising two identical disulfide-bonded subunits. This protein has broad specificity and cleaves a variety of substrates, including phosphodiester bonds of nucleotides and nucleotide sugars and pyrophosphate bonds of nucleotides and nucleotide sugars. This protein may function to hydrolyze nucleoside 5' triphosphates to their corresponding monophosphates and may also hydrolyze diadenosine polyphosphates. Mutations in this gene have been associated with 'idiopathic' infantile arterial calcification, ossification of the posterior longitudinal ligament of the spine (OPLL), and insulin resistance. [provided by RefSeq, Jul 2008]

ENPP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.72).

BP6

Variant 6-131808023-G-A is Benign according to our data. Variant chr6-131808023-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 285777.We mark this variant Likely_benign, oryginal submissions are: {Benign=4, Uncertain_significance=1}.

BA1

GnomAdExome4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0606 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ENPP1	NM_006208.3 linkuse as main transcript	c.-13G>A		5_prime_UTR_variant	1/25	ENST00000647893.1

Ensembl

Gene	Transcript	HGVSc	Effect	#exon/exons	TSL	MANE	Appris
ENPP1	ENST00000647893.1 linkuse as main transcript	c.-13G>A	5_prime_UTR_variant	1/25		NM_006208.3	P1
ENPP1	ENST00000486853.1 linkuse as main transcript	n.8G>A	non_coding_transcript_exon_variant	1/4	2
ENPP1	ENST00000513998.5 linkuse as main transcript		upstream_gene_variant		5

Frequencies

GnomAD3 genomes

AF:

0.0149

AC:

2136

AN:

143454

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0513

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00434

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00329

Gnomad NFE

AF:

0.0000927

Gnomad OTH

AF:

0.0107

GnomAD4 exome

AF:

0.00136

AC:

1133

AN:

834770

Hom.:

Cov.:

AF XY:

0.00122

AC XY:

471

AN XY:

386060

show subpopulations

Gnomad4 AFR exome

AF:

0.0638

Gnomad4 AMR exome

AF:

0.00258

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000268

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000368

Gnomad4 OTH exome

AF:

0.00321

GnomAD4 genome

AF:

0.0149

AC:

2141

AN:

143560

Hom.:

Cov.:

AF XY:

0.0144

AC XY:

1009

AN XY:

69830

show subpopulations

Gnomad4 AFR

AF:

0.0513

Gnomad4 AMR

AF:

0.00433

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000927

Gnomad4 OTH

AF:

0.0106

Alfa

AF:

0.0108

Hom.:

Bravo

AF:

0.0175

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 30, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jan 20, 2016	- -

Hypophosphatemic rickets, autosomal recessive, 2

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. -

Arterial calcification, generalized, of infancy, 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

ENPP1-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 11, 2022

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.72

Cadd

Benign

Dann

Benign

0.91

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over