10-103089693-C-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_001351169.2(NT5C2):c.1665G>T(p.Glu555Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000355 in 1,607,780 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00038 ( 1 hom. )

Consequence

NT5C2
NM_001351169.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.421

Variant links:

Genes affected

NT5C2 (HGNC:8022): (5'-nucleotidase, cytosolic II) This gene encodes a hydrolase that serves as an important role in cellular purine metabolism by acting primarily on inosine 5'-monophosphate and other purine nucleotides. [provided by RefSeq, Oct 2011]

NT5C2 links:

CNNM2 (HGNC:103): (cyclin and CBS domain divalent metal cation transport mediator 2) This gene encodes a member of the ancient conserved domain containing protein family. Members of this protein family contain a cyclin box motif and have structural similarity to the cyclins. The encoded protein may play an important role in magnesium homeostasis by mediating the epithelial transport and renal reabsorption of Mg2+. Mutations in this gene are associated with renal hypomagnesemia. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

CNNM2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.052194774).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000138 (21/152018) while in subpopulation NFE AF= 0.000294 (20/68000). AF 95% confidence interval is 0.000194. There are 0 homozygotes in gnomad4. There are 15 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NT5C2	NM_001351169.2 linkuse as main transcript	c.1665G>T	p.Glu555Asp	missense_variant	19/19	ENST00000404739.8
CNNM2	NM_017649.5 linkuse as main transcript	c.*12513C>A		3_prime_UTR_variant	8/8	ENST00000369878.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NT5C2	ENST00000404739.8 linkuse as main transcript	c.1665G>T	p.Glu555Asp	missense_variant	19/19	1	NM_001351169.2	P1	P49902-1
CNNM2	ENST00000369878.9 linkuse as main transcript	c.*12513C>A		3_prime_UTR_variant	8/8	1	NM_017649.5	P4	Q9H8M5-1

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152018

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000184

AC:

AN:

245124

Hom.:

AF XY:

0.000197

AC XY:

AN XY:

132308

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000387

Gnomad OTH exome

AF:

0.000336

GnomAD4 exome

AF:

0.000377

AC:

549

AN:

1455762

Hom.:

Cov.:

AF XY:

0.000366

AC XY:

265

AN XY:

723888

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000454

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.000481

Gnomad4 OTH exome

AF:

0.000216

GnomAD4 genome

AF:

0.000138

AC:

AN:

152018

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74238

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000362

Hom.:

Bravo

AF:

0.000204

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000198

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 45

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 15, 2022

This sequence change replaces glutamic acid, which is acidic and polar, with aspartic acid, which is acidic and polar, at codon 555 of the NT5C2 protein (p.Glu555Asp). This variant is present in population databases (rs141031435, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with NT5C2-related conditions. ClinVar contains an entry for this variant (Variation ID: 541766). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.53

Cadd

Benign

Dann

Benign

0.85

DEOGEN2

Benign

0.13

T;T

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.73

FATHMM_MKL

Uncertain

0.92

M_CAP

Benign

0.015

MetaRNN

Benign

0.052

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.92

L;L

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-0.91

N;N

REVEL

Benign

0.062

Sift

Benign

0.47

T;T

Sift4G

Benign

0.29

T;T

Polyphen

0.0020

B;B

Vest4

0.48

MutPred

0.076

Loss of helix (P = 0.079);Loss of helix (P = 0.079);

MVP

0.22

MPC

0.62

ClinPred

0.015

GERP RS

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.034

gMVP

0.26

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