chr16-88836235-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 2P and 20B. PM1BP4_StrongBP6_Very_StrongBA1

The NM_000512.5(GALNS):c.599C>T(p.Thr200Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00787 in 1,613,198 control chromosomes in the GnomAD database, including 842 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. T200T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.041 ( 447 hom., cov: 33)

Exomes 𝑓: 0.0044 ( 395 hom. )

Consequence

GALNS
NM_000512.5 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: 9.48

Publications

8 publications found

Variant links:

Genes affected

GALNS (HGNC:4122): (galactosamine (N-acetyl)-6-sulfatase) This gene encodes N-acetylgalactosamine-6-sulfatase which is a lysosomal exohydrolase required for the degradation of the glycosaminoglycans, keratan sulfate, and chondroitin 6-sulfate. Sequence alterations including point, missense and nonsense mutations, as well as those that affect splicing, result in a deficiency of this enzyme. Deficiencies of this enzyme lead to Morquio A syndrome, a lysosomal storage disorder. [provided by RefSeq, Jul 2008]

GALNS Gene-Disease associations (from GenCC):

mucopolysaccharidosis type 4A
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp

GALNS links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -18 ACMG points.

PM1

In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 5 uncertain in NM_000512.5

BP4

Computational evidence support a benign effect (MetaRNN=0.0019369423).

BP6

Variant 16-88836235-G-A is Benign according to our data. Variant chr16-88836235-G-A is described in ClinVar as Benign. ClinVar VariationId is 198087.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.141 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GALNS	NM_000512.5 link	c.599C>T	p.Thr200Met	missense_variant	Exon 6 of 14	ENST00000268695.10	NP_000503.1	P34059Q96I49

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GALNS	ENST00000268695.10 link	c.599C>T	p.Thr200Met	missense_variant	Exon 6 of 14	1	NM_000512.5	ENSP00000268695.5		P34059

Frequencies

GnomAD3 genomes

AF:

0.0413

AC:

6288

AN:

152196

Hom.:

445

Cov.:

show subpopulations

Gnomad AFR

AF:

0.144

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0158

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000413

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000558

Gnomad OTH

AF:

0.0272

GnomAD2 exomes

AF:

0.0109

AC:

2720

AN:

250494

AF XY:

0.00799

show subpopulations

Gnomad AFR exome

AF:

0.147

Gnomad AMR exome

AF:

0.00738

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000450

Gnomad OTH exome

AF:

0.00604

GnomAD4 exome

AF:

0.00437

AC:

6388

AN:

1460884

Hom.:

395

Cov.:

AF XY:

0.00382

AC XY:

2773

AN XY:

726774

show subpopulations

African (AFR)

AF:

0.152

AC:

5074

AN:

33412

American (AMR)

AF:

0.00846

AC:

378

AN:

44696

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.000278

AC:

AN:

86232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52888

Middle Eastern (MID)

AF:

0.00625

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.000293

AC:

326

AN:

1111694

Other (OTH)

AF:

0.00909

AC:

549

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

303

606

908

1211

1514

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

158

316

474

632

790

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0414

AC:

6307

AN:

152314

Hom.:

447

Cov.:

AF XY:

0.0396

AC XY:

2946

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.144

AC:

5970

AN:

41540

American (AMR)

AF:

0.0158

AC:

242

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.000207

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000544

AC:

AN:

68034

Other (OTH)

AF:

0.0269

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

289

579

868

1158

1447

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

180

240

300

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0110

Hom.:

146

Bravo

AF:

0.0478

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.146

AC:

643

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0134

AC:

1628

Asia WGS

AF:

0.00520

AC:

AN:

3478

EpiCase

AF:

0.000491

EpiControl

AF:

0.000593

ClinVar

Significance: Benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Oct 24, 2017

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Jul 25, 2014

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mucopolysaccharidosis, MPS-IV-A

Benign:3

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. -

Nov 07, 2021

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

May 17, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Uncertain

0.050

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.82

D;.

Eigen

Uncertain

0.22

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

D;D

MetaRNN

Benign

0.0019

T;T

MetaSVM

Benign

-0.64

MutationAssessor

Benign

1.3

L;.

PhyloP100

9.5

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-2.8

D;D

REVEL

Uncertain

0.46

Sift

Uncertain

0.027

D;D

Sift4G

Benign

0.089

T;.

Polyphen

0.93

P;.

Vest4

0.26

MPC

0.23

ClinPred

0.053

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.47

gMVP

0.75

Mutation Taster

=26/74

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over