rs34204221
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Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_000404.4(GLB1):c.458-11T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.11 in 1,562,346 control chromosomes in the GnomAD database, including 10,018 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: 𝑓 0.10 ( 906 hom., cov: 32)
Exomes 𝑓: 0.11 ( 9112 hom. )
Consequence
GLB1
NM_000404.4 intron
NM_000404.4 intron
Scores
2
Splicing: ADA: 0.0001366
2
Clinical Significance
Conservation
PhyloP100: 0.00600
Genes affected
GLB1 (HGNC:4298): (galactosidase beta 1) This gene encodes a member of the glycosyl hydrolase 35 family of proteins. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate the mature lysosomal enzyme. This enzyme catalyzes the hydrolysis of a terminal beta-linked galactose residue from ganglioside substrates and other glycoconjugates. Mutations in this gene may result in GM1-gangliosidosis and Morquio B syndrome. [provided by RefSeq, Nov 2015]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -20 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.81).
BP6
Variant 3-33065568-A-G is Benign according to our data. Variant chr3-33065568-A-G is described in ClinVar as [Benign]. Clinvar id is 92909.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-33065568-A-G is described in Lovd as [Benign].
BA1
GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.119 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
GLB1 | NM_000404.4 | c.458-11T>C | intron_variant | ENST00000307363.10 | NP_000395.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
GLB1 | ENST00000307363.10 | c.458-11T>C | intron_variant | 1 | NM_000404.4 | ENSP00000306920.4 |
Frequencies
GnomAD3 genomes AF: 0.102 AC: 15585AN: 152144Hom.: 906 Cov.: 32
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GnomAD3 exomes AF: 0.0872 AC: 14889AN: 170666Hom.: 777 AF XY: 0.0858 AC XY: 7796AN XY: 90870
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GnomAD4 exome AF: 0.110 AC: 155760AN: 1410084Hom.: 9112 Cov.: 32 AF XY: 0.109 AC XY: 75945AN XY: 696458
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GnomAD4 genome AF: 0.103 AC: 15611AN: 152262Hom.: 906 Cov.: 32 AF XY: 0.0997 AC XY: 7420AN XY: 74442
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ClinVar
Significance: Benign
Submissions summary: Benign:12
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:5
Benign, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
Benign, criteria provided, single submitter | clinical testing | GeneDx | Sep 20, 2016 | 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. - |
Benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Benign, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Feb 18, 2013 | - - |
Benign, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
not provided Benign:2
Benign, criteria provided, single submitter | not provided | Breakthrough Genomics, Breakthrough Genomics | - | - - |
Benign, no assertion criteria provided | clinical testing | Mayo Clinic Laboratories, Mayo Clinic | Dec 16, 2015 | - - |
Mucopolysaccharidosis, MPS-IV-B Benign:2
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | 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. - |
Benign, criteria provided, single submitter | clinical testing | Pars Genome Lab | Jun 15, 2021 | - - |
GM1 gangliosidosis;C0086652:Mucopolysaccharidosis, MPS-IV-B Benign:1
Benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Feb 01, 2024 | - - |
GM1 gangliosidosis Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | 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. - |
Infantile GM1 gangliosidosis Benign:1
Benign, criteria provided, single submitter | clinical testing | Pars Genome Lab | Jun 15, 2021 | - - |
Computational scores
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Name
Calibrated prediction
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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dbscSNV1_ADA
Benign
dbscSNV1_RF
Benign
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at