rs28941782

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2PP3_StrongPP5_Moderate

The NM_001077365.2(POMT1):​c.226G>A​(p.Gly76Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,538 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

POMT1
NM_001077365.2 missense

Scores

12
4
3

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 9.36
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.974
PP5
Variant 9-131506217-G-A is Pathogenic according to our data. Variant chr9-131506217-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 3238.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr9-131506217-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
POMT1NM_001077365.2 linkuse as main transcriptc.226G>A p.Gly76Arg missense_variant 3/20 ENST00000402686.8 NP_001070833.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
POMT1ENST00000402686.8 linkuse as main transcriptc.226G>A p.Gly76Arg missense_variant 3/201 NM_001077365.2 ENSP00000385797 P1Q9Y6A1-2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461538
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
727126
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
9.00e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenFeb 01, 2020- -
Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A1 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMNov 01, 2002- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.93
BayesDel_addAF
Pathogenic
0.44
D
BayesDel_noAF
Pathogenic
0.39
CADD
Pathogenic
30
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.81
.;.;D;.;D;D
Eigen
Pathogenic
0.88
Eigen_PC
Pathogenic
0.87
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.98
D;D;D;.;D;D
M_CAP
Uncertain
0.23
D
MetaRNN
Pathogenic
0.97
D;D;D;D;D;D
MetaSVM
Uncertain
0.65
D
MutationAssessor
Pathogenic
3.3
M;.;M;M;.;.
MutationTaster
Benign
1.0
A;A;A;A;A;A;A;A
PrimateAI
Uncertain
0.78
T
PROVEAN
Uncertain
-2.5
D;D;D;D;D;D
REVEL
Pathogenic
0.81
Sift
Benign
0.033
D;D;D;D;T;T
Sift4G
Benign
0.063
T;T;T;T;D;D
Polyphen
0.98
D;.;D;D;.;.
Vest4
0.97
MutPred
0.92
Gain of methylation at G76 (P = 7e-04);.;Gain of methylation at G76 (P = 7e-04);Gain of methylation at G76 (P = 7e-04);Gain of methylation at G76 (P = 7e-04);.;
MVP
0.97
MPC
0.97
ClinPred
0.99
D
GERP RS
5.7
Varity_R
0.93
gMVP
0.94

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.

Other links and lift over

dbSNP: rs28941782; hg19: chr9-134381604; API