22-42067809-C-T

Position:

chr22-42067809-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_000262.3(NAGA):c.280G>A(p.Asp94Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00178 in 1,612,702 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0012 ( 2 hom., cov: 33)

Exomes 𝑓: 0.0018 ( 5 hom. )

Consequence

NAGA
NM_000262.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:3

Conservation

PhyloP100: 6.17

Variant links:

Genes affected

NAGA (HGNC:7631): (alpha-N-acetylgalactosaminidase) NAGA encodes the lysosomal enzyme alpha-N-acetylgalactosaminidase, which cleaves alpha-N-acetylgalactosaminyl moieties from glycoconjugates. Mutations in NAGA have been identified as the cause of Schindler disease types I and II (type II also known as Kanzaki disease). [provided by RefSeq, Jul 2008]

NAGA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.09071505).

BP6

Variant 22-42067809-C-T is Benign according to our data. Variant chr22-42067809-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 341912.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=6}. Variant chr22-42067809-C-T is described in Lovd as [Likely_benign].

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NAGA	NM_000262.3 linkuse as main transcript	c.280G>A	p.Asp94Asn	missense_variant	3/9	ENST00000396398.8	NP_000253.1	P17050A0A024R1Q5
NAGA	NM_001362848.1 linkuse as main transcript	c.280G>A	p.Asp94Asn	missense_variant	4/10		NP_001349777.1
NAGA	NM_001362850.1 linkuse as main transcript	c.280G>A	p.Asp94Asn	missense_variant	4/10		NP_001349779.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
NAGA	ENST00000396398.8 linkuse as main transcript	c.280G>A	p.Asp94Asn	missense_variant	3/9	1	NM_000262.3	ENSP00000379680.3	P17050
NAGA	ENST00000402937.1 linkuse as main transcript	c.280G>A	p.Asp94Asn	missense_variant	4/10	5		ENSP00000384603.1	P17050
NAGA	ENST00000403363.5 linkuse as main transcript	c.280G>A	p.Asp94Asn	missense_variant	4/10	5		ENSP00000385283.1	P17050

Frequencies

GnomAD3 genomes

AF:

0.00121

AC:

184

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000410

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

Gnomad ASJ

AF:

0.00317

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00201

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00132

AC:

331

AN:

250106

Hom.:

AF XY:

0.00126

AC XY:

171

AN XY:

135262

show subpopulations

Gnomad AFR exome

AF:

0.000369

Gnomad AMR exome

AF:

0.00119

Gnomad ASJ exome

AF:

0.00109

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000344

Gnomad NFE exome

AF:

0.00226

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.00184

AC:

2694

AN:

1460398

Hom.:

Cov.:

AF XY:

0.00174

AC XY:

1263

AN XY:

726558

show subpopulations

Gnomad4 AFR exome

AF:

0.000329

Gnomad4 AMR exome

AF:

0.00132

Gnomad4 ASJ exome

AF:

0.00119

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000651

Gnomad4 NFE exome

AF:

0.00222

Gnomad4 OTH exome

AF:

0.00156

GnomAD4 genome

AF:

0.00121

AC:

184

AN:

152304

Hom.:

Cov.:

AF XY:

0.000980

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.000409

Gnomad4 AMR

AF:

0.00111

Gnomad4 ASJ

AF:

0.00317

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.00201

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0356

Hom.:

1473

Bravo

AF:

0.00134

TwinsUK

AF:

0.00162

AC:

ALSPAC

AF:

0.00311

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00163

AC:

ExAC

AF:

0.00125

AC:

152

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00164

EpiControl

AF:

0.00219

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Jan 13, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Feb 18, 2021	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	NAGA: BP4, BS2 -

Alpha-N-acetylgalactosaminidase deficiency type 2

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Baylor Genetics	Jan 18, 2018	This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Alpha-N-acetylgalactosaminidase deficiency type 1

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -

Alpha-N-acetylgalactosaminidase deficiency type 2;C1836544:Alpha-N-acetylgalactosaminidase deficiency type 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

NAGA-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 08, 2022

This variant is classified as likely 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

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.90

D;D;D

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.15

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.98

.;.;D

M_CAP

Benign

0.051

MetaRNN

Benign

0.091

T;T;T

MetaSVM

Benign

-0.45

MutationAssessor

Benign

1.4

L;L;L

PrimateAI

Benign

0.44

PROVEAN

Uncertain

-2.5

N;N;N

REVEL

Benign

0.25

Sift

Benign

0.13

T;T;T

Sift4G

Benign

0.17

T;T;T

Polyphen

0.11

B;B;B

Vest4

0.68

MVP

0.87

MPC

0.35

ClinPred

0.055

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.54

gMVP

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