rs111751379
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2
The NM_152564.5(VPS13B):c.7678G>A(p.Glu2560Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00449 in 1,613,934 control chromosomes in the GnomAD database, including 27 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Consequence
NM_152564.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -20 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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VPS13B | ENST00000358544.7 | c.7753G>A | p.Glu2585Lys | missense_variant | Exon 42 of 62 | 1 | NM_017890.5 | ENSP00000351346.2 | ||
VPS13B | ENST00000357162.7 | c.7678G>A | p.Glu2560Lys | missense_variant | Exon 42 of 62 | 1 | NM_152564.5 | ENSP00000349685.2 |
Frequencies
GnomAD3 genomes AF: 0.00305 AC: 464AN: 152162Hom.: 4 Cov.: 32
GnomAD3 exomes AF: 0.00326 AC: 818AN: 250916Hom.: 3 AF XY: 0.00330 AC XY: 447AN XY: 135596
GnomAD4 exome AF: 0.00464 AC: 6789AN: 1461654Hom.: 23 Cov.: 32 AF XY: 0.00471 AC XY: 3426AN XY: 727126
GnomAD4 genome AF: 0.00305 AC: 464AN: 152280Hom.: 4 Cov.: 32 AF XY: 0.00273 AC XY: 203AN XY: 74462
ClinVar
Submissions by phenotype
not specified Benign:6
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The p.Glu2585Lys variant in VPS13B is classified as likely benign because it has been identified in 0.5% (341/68030) of European chromosomes by gnomAD including 4 homozygotes (http://gnomad.broadinstitute.org, v.3.1.2), which is higher than the expected frequency of a disease cuasing variant in this gene. In addition, computational prediction tools predict that this variant does not impact the protein. ACMG/AMP Criteria applied: BS1, BP4. -
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. -
Variant summary: VPS13B c.7753G>A (p.Glu2585Lys) results in a conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0033 in 250916 control chromosomes in the gnomAD database, including 3 homozygotes. The observed variant frequency is higher than the estimated maximal expected allele frequency for a pathogenic variant in VPS13B causing Cohen Syndrome phenotype (0.0025), strongly suggesting that the variant is benign. Eleven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (pathogenic n=1, VUS n=1, benign/likely benign n=9). Based on the evidence outlined above, the variant was classified as benign. -
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not provided Benign:6
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VPS13B: BP4, BS2 -
Cohen syndrome Benign:6
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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -
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European Non-Finnish population allele frequency is 0.5105% (rs111751379, 680/128770 alleles, 3 homozygotes in gnomAD v2.1). Based on the classification scheme RMH Modified ACMG/AMP Guidelines v1.5.1, this variant is classified as LIKELY BENIGN. Following criteria are met: BS1 -
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Inborn genetic diseases Benign:1
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. -
Retinitis pigmentosa Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at