1-46190800-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_017739.4(POMGNT1):c.1540-16C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00406 in 1,603,762 control chromosomes in the GnomAD database, including 176 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.019 ( 79 hom., cov: 32)

Exomes 𝑓: 0.0025 ( 97 hom. )

Consequence

POMGNT1
NM_017739.4 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.259

Publications

3 publications found

Variant links:

Genes affected

POMGNT1 (HGNC:19139): (protein O-linked mannose N-acetylglucosaminyltransferase 1 (beta 1,2-)) This gene encodes a type II transmembrane protein that resides in the Golgi apparatus. It participates in O-mannosyl glycosylation and is specific for alpha linked terminal mannose. Mutations in this gene may be associated with muscle-eye-brain disease and several congenital muscular dystrophies. Alternatively spliced transcript variants that encode different protein isoforms have been described. [provided by RefSeq, Feb 2014]

POMGNT1 links:

TSPAN1 (HGNC:20657): (tetraspanin 1) The protein encoded by this gene is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. [provided by RefSeq, Jul 2008]

TSPAN1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.75).

BP6

Variant 1-46190800-G-A is Benign according to our data. Variant chr1-46190800-G-A is described in ClinVar as Benign. ClinVar VariationId is 162587.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0608 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POMGNT1	NM_017739.4 link	c.1540-16C>T		intron_variant	Intron 17 of 21	ENST00000371984.8	NP_060209.4	Q8WZA1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POMGNT1	ENST00000371984.8 link	c.1540-16C>T		intron_variant	Intron 17 of 21	1	NM_017739.4	ENSP00000361052.3		Q8WZA1-1

Frequencies

GnomAD3 genomes

AF:

0.0186

AC:

2837

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0628

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00727

Gnomad ASJ

AF:

0.0196

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000514

Gnomad OTH

AF:

0.00956

GnomAD2 exomes

AF:

0.00612

AC:

1540

AN:

251468

AF XY:

0.00480

show subpopulations

Gnomad AFR exome

AF:

0.0674

Gnomad AMR exome

AF:

0.00457

Gnomad ASJ exome

AF:

0.0178

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000677

Gnomad OTH exome

AF:

0.00456

GnomAD4 exome

AF:

0.00252

AC:

3661

AN:

1451492

Hom.:

Cov.:

AF XY:

0.00226

AC XY:

1636

AN XY:

722768

show subpopulations

African (AFR)

AF:

0.0656

AC:

2178

AN:

33216

American (AMR)

AF:

0.00481

AC:

215

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.0188

AC:

489

AN:

26078

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39662

South Asian (SAS)

AF:

0.0000581

AC:

AN:

86010

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00627

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.000319

AC:

352

AN:

1102568

Other (OTH)

AF:

0.00641

AC:

385

AN:

60100

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

200

400

599

799

999

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

156

234

312

390

<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:

0.0187

AC:

2844

AN:

152270

Hom.:

Cov.:

AF XY:

0.0181

AC XY:

1349

AN XY:

74448

show subpopulations

African (AFR)

AF:

0.0628

AC:

2609

AN:

41544

American (AMR)

AF:

0.00726

AC:

111

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.0196

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000515

AC:

AN:

68022

Other (OTH)

AF:

0.00946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

131

262

394

525

656

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

104

130

<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:

0.0112

Hom.:

Bravo

AF:

0.0212

Asia WGS

AF:

0.00318

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

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

- -

Jun 25, 2014

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. -

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

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

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B3;C3150417:Autosomal recessive limb-girdle muscular dystrophy type 2O

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.75

CADD

Benign

5.9

(source)

DANN

Benign

0.70

PhyloP100

0.26

Mutation Taster

=100/0

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