rs117985576

Positions:

chr9-131519401-G-A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP6BS2

The NM_001077365.2(POMT1):c.1499G>A(p.Arg500Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00255 in 1,552,060 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/23 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 0.0017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0026 ( 17 hom. )

Consequence

POMT1
NM_001077365.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:11

Conservation

PhyloP100: 1.28

Variant links:

Genes affected

POMT1 (HGNC:9202): (protein O-mannosyltransferase 1) The protein encoded by this gene is an O-mannosyltransferase that requires interaction with the product of the POMT2 gene for enzymatic function. The encoded protein is found in the membrane of the endoplasmic reticulum. Defects in this gene are a cause of Walker-Warburg syndrome (WWS) and limb-girdle muscular dystrophy type 2K (LGMD2K). Several transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Oct 2008]

POMT1 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP6

Variant 9-131519401-G-A is Benign according to our data. Variant chr9-131519401-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 95459.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=7, Uncertain_significance=5}. Variant chr9-131519401-G-A is described in Lovd as [Likely_benign]. Variant chr9-131519401-G-A is described in Lovd as [Benign].

BS2

High Homozygotes in GnomAdExome4 at 17 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POMT1	NM_001077365.2 linkuse as main transcript	c.1499G>A	p.Arg500Lys	missense_variant	16/20	ENST00000402686.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POMT1	ENST00000402686.8 linkuse as main transcript	c.1499G>A	p.Arg500Lys	missense_variant	16/20	1	NM_001077365.2	P1	Q9Y6A1-2
	ENST00000415423.1 linkuse as main transcript	n.63-2433C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.00173

AC:

264

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000410

Gnomad AMI

AF:

0.00110

Gnomad AMR

AF:

0.000981

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000622

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00326

Gnomad OTH

AF:

0.00239

GnomAD3 exomes

AF:

0.00169

AC:

266

AN:

157036

Hom.:

AF XY:

0.00159

AC XY:

131

AN XY:

82554

show subpopulations

Gnomad AFR exome

AF:

0.000560

Gnomad AMR exome

AF:

0.00178

Gnomad ASJ exome

AF:

0.000235

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000175

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00332

Gnomad OTH exome

AF:

0.00202

GnomAD4 exome

AF:

0.00264

AC:

3696

AN:

1399756

Hom.:

Cov.:

AF XY:

0.00252

AC XY:

1743

AN XY:

690428

show subpopulations

Gnomad4 AFR exome

AF:

0.000536

Gnomad4 AMR exome

AF:

0.00176

Gnomad4 ASJ exome

AF:

0.0000397

Gnomad4 EAS exome

AF:

0.0000278

Gnomad4 SAS exome

AF:

0.000252

Gnomad4 FIN exome

AF:

0.000163

Gnomad4 NFE exome

AF:

0.00321

Gnomad4 OTH exome

AF:

0.00210

GnomAD4 genome

AF:

0.00173

AC:

264

AN:

152304

Hom.:

Cov.:

AF XY:

0.00167

AC XY:

124

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.000409

Gnomad4 AMR

AF:

0.000980

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.00326

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.00287

Hom.:

Bravo

AF:

0.00192

TwinsUK

AF:

0.00324

AC:

ALSPAC

AF:

0.00389

AC:

ESP6500AA

AF:

0.000469

AC:

ESP6500EA

AF:

0.00132

AC:

ExAC

AF:

0.000432

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:11

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:5

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2024	POMT1: BP4 -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Aug 19, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 26, 2020	This variant is associated with the following publications: (PMID: 18647264, 16575835, 17878207) -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Jul 26, 2021	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -

not specified

Uncertain:1Benign:4

Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 04, 2015	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Jun 02, 2015	- -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 23, 2021	- -

Autosomal recessive limb-girdle muscular dystrophy type 2K;C4284790:Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A1;C5436962:Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

May 23, 2017

- -

Intellectual disability

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille

Jan 01, 2019

- -

Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Mar 07, 2019

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Autosomal recessive limb-girdle muscular dystrophy type 2K

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Walker-Warburg congenital muscular dystrophy;C1836373:Autosomal recessive limb-girdle muscular dystrophy type 2K;C5436962:Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.059

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.43

CADD

Benign

7.8

DANN

Benign

0.86

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.28

LIST_S2

Benign

0.65

T;T;T;T;.;T

M_CAP

Benign

0.056

MetaRNN

Benign

0.0050

T;T;T;T;T;T

MetaSVM

Benign

-0.69

MutationTaster

Benign

0.99

N;N;N;N;N;N;N;N

PrimateAI

Benign

0.28

PROVEAN

Benign

0.99

N;N;N;N;N;N

REVEL

Benign

0.15

Sift

Benign

1.0

T;T;T;T;T;T

Sift4G

Benign

1.0

T;T;T;T;T;T

Polyphen

0.0

.;B;.;B;B;.

Vest4

0.21

MVP

0.43

MPC

0.25

ClinPred

0.0029

GERP RS

-4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.026

gMVP

0.22

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.24

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.24

Position offset: -7

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