Variant 17-79735304-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_178543.5(ENPP7):c.661C>T(p.Arg221Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000676 in 1,613,168 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

ENPP7
NM_178543.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.388

Variant links:

Genes affected

ENPP7 (HGNC:23764): (ectonucleotide pyrophosphatase/phosphodiesterase 7) The protein encoded by this gene is an intestinal alkaline sphingomyelin phosphodiesterase that converts sphingomyelin to ceramide and phosphocholine. The encoded protein is anchored in the cell membrane, and it may function to protect the intestinal mucosa from inflammation and tumorigenesis. This protein is glycosylated and also exhibits lysophosphatidylcholine hydrolase activity. [provided by RefSeq, Oct 2016]

ENPP7 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ENPP7	NM_178543.5 linkuse as main transcript	c.661C>T	p.Arg221Trp	missense_variant	3/6	ENST00000328313.10	NP_848638.3
ENPP7	XM_011524737.2 linkuse as main transcript	c.754C>T	p.Arg252Trp	missense_variant	3/5		XP_011523039.2
ENPP7	XR_001752505.2 linkuse as main transcript	n.858C>T		non_coding_transcript_exon_variant	3/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ENPP7	ENST00000328313.10 linkuse as main transcript	c.661C>T	p.Arg221Trp	missense_variant	3/6	1	NM_178543.5	ENSP00000332656	P1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152078

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000894

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000600

AC:

AN:

249988

Hom.:

AF XY:

0.0000517

AC XY:

AN XY:

135440

show subpopulations

Gnomad AFR exome

AF:

0.000684

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000479

AC:

AN:

1460972

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

726826

show subpopulations

Gnomad4 AFR exome

AF:

0.00119

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000202

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000256

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74406

show subpopulations

Gnomad4 AFR

AF:

0.000891

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000883

Hom.:

Bravo

AF:

0.000280

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 15, 2024

The c.661C>T (p.R221W) alteration is located in exon 3 (coding exon 3) of the ENPP7 gene. This alteration results from a C to T substitution at nucleotide position 661, causing the arginine (R) at amino acid position 221 to be replaced by a tryptophan (W). 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

0.23

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Uncertain

1.0

Eigen

Benign

0.0040

Eigen_PC

Benign

-0.18

FATHMM_MKL

Uncertain

0.85

M_CAP

Uncertain

0.17

MetaRNN

Uncertain

0.64

MetaSVM

Uncertain

0.084

MutationTaster

Benign

0.99

PrimateAI

Uncertain

0.51

PROVEAN

Pathogenic

-6.9

REVEL

Uncertain

0.57

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0020

Vest4

0.67

MVP

0.90

MPC

0.59

ClinPred

0.97

GERP RS

-3.5

gMVP

0.84

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