rs11345097

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_StrongBS1BS2

The NM_001077365.2(POMT1):​c.1825+19del variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00166 in 1,612,498 control chromosomes in the GnomAD database, including 40 homozygotes. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0092 ( 26 hom., cov: 32)
Exomes 𝑓: 0.00087 ( 14 hom. )

Consequence

POMT1
NM_001077365.2 intron

Scores

Not classified

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -1.02
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 Benign. Variant got -16 ACMG points.

BP6
Variant 9-131521490-AT-A is Benign according to our data. Variant chr9-131521490-AT-A is described in ClinVar as [Benign]. Clinvar id is 162592.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr9-131521490-AT-A is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00923 (1403/152074) while in subpopulation AFR AF= 0.0326 (1354/41494). AF 95% confidence interval is 0.0312. There are 26 homozygotes in gnomad4. There are 687 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 26 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
POMT1NM_001077365.2 linkuse as main transcriptc.1825+19del intron_variant ENST00000402686.8 NP_001070833.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
POMT1ENST00000402686.8 linkuse as main transcriptc.1825+19del intron_variant 1 NM_001077365.2 ENSP00000385797 P1Q9Y6A1-2
ENST00000415423.1 linkuse as main transcriptn.62+677del intron_variant, non_coding_transcript_variant 3

Frequencies

GnomAD3 genomes
AF:
0.00923
AC:
1403
AN:
151958
Hom.:
26
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0327
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00223
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000623
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00479
GnomAD3 exomes
AF:
0.00229
AC:
576
AN:
251026
Hom.:
10
AF XY:
0.00183
AC XY:
249
AN XY:
135738
show subpopulations
Gnomad AFR exome
AF:
0.0324
Gnomad AMR exome
AF:
0.00113
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.0000653
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000441
Gnomad OTH exome
AF:
0.000489
GnomAD4 exome
AF:
0.000869
AC:
1269
AN:
1460424
Hom.:
14
Cov.:
30
AF XY:
0.000758
AC XY:
551
AN XY:
726600
show subpopulations
Gnomad4 AFR exome
AF:
0.0313
Gnomad4 AMR exome
AF:
0.00132
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000153
Gnomad4 OTH exome
AF:
0.00217
GnomAD4 genome
AF:
0.00923
AC:
1403
AN:
152074
Hom.:
26
Cov.:
32
AF XY:
0.00924
AC XY:
687
AN XY:
74360
show subpopulations
Gnomad4 AFR
AF:
0.0326
Gnomad4 AMR
AF:
0.00222
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000415
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00474
Alfa
AF:
0.000480
Hom.:
0
Bravo
AF:
0.0103

ClinVar

Significance: Benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:2
Benign, criteria provided, single submitterclinical testingGeneDxOct 28, 2015This 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. -
Benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
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
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 29, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs11345097; hg19: chr9-134396877; API