rs28385142
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_000057.4(BLM):c.3637G>A(p.Glu1213Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,614,066 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. E1213E) has been classified as Likely benign.
Frequency
Consequence
NM_000057.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BLM | NM_000057.4 | c.3637G>A | p.Glu1213Lys | missense_variant | 19/22 | ENST00000355112.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BLM | ENST00000355112.8 | c.3637G>A | p.Glu1213Lys | missense_variant | 19/22 | 1 | NM_000057.4 | P2 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152218Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000159 AC: 4AN: 251392Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135862
GnomAD4 exome AF: 0.00000958 AC: 14AN: 1461848Hom.: 0 Cov.: 32 AF XY: 0.00000963 AC XY: 7AN XY: 727236
GnomAD4 genome ? AF: 0.0000131 AC: 2AN: 152218Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74370
ClinVar
Submissions by phenotype
not provided Uncertain:3
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Dec 13, 2023 | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Identified in healthy individuals undergoing whole genome sequencing (PMID: 24728327); Published functional studies demonstrate no damaging effect to growth in the presence of a DNA-damaging agent (PMID: 23129629); This variant is associated with the following publications: (PMID: 24728327, 23129629) - |
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Apr 28, 2017 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Jan 17, 2023 | The frequency of this variant in the general population, 0.00011 (4/35436 chromosomes, http://gnomad.broadinstitute.org), is uninformative in assessment of its pathogenicity. In the published literature, the variant has been reported in unaffected individuals (PMID: 24728327 (2014)). A yeast based functional study has shown that this variant does not display sensitivity to a DNA damaging agent (PMID: 23129629 (2012)). However, additional studies are needed to determine the global effect of this variant on BLM protein function. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. - |
Bloom syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Feb 23, 2020 | This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Sep 26, 2022 | This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 1213 of the BLM protein (p.Glu1213Lys). This variant is present in population databases (rs28385142, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with BLM-related conditions. ClinVar contains an entry for this variant (Variation ID: 133702). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BLM protein function. Experimental studies have shown that this missense change does not substantially affect BLM function (PMID: 23129629). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Hereditary cancer-predisposing syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Oct 11, 2019 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
not specified Other:1
not provided, no classification provided | reference population | ITMI | Sep 19, 2013 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at