rs180177372
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_017890.5(VPS13B):c.11245G>A(p.Glu3749Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000087 in 1,597,348 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000088 ( 0 hom. )
Consequence
VPS13B
NM_017890.5 missense
NM_017890.5 missense
Scores
6
7
4
Clinical Significance
Conservation
PhyloP100: 7.33
Genes affected
VPS13B (HGNC:2183): (vacuolar protein sorting 13 homolog B) This gene encodes a potential transmembrane protein that may function in vesicle-mediated transport and sorting of proteins within the cell. This protein may play a role in the development and the function of the eye, hematological system, and central nervous system. Mutations in this gene have been associated with Cohen syndrome. Multiple splice variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
VPS13B | NM_017890.5 | c.11245G>A | p.Glu3749Lys | missense_variant | 58/62 | ENST00000358544.7 | |
VPS13B | NM_152564.5 | c.11170G>A | p.Glu3724Lys | missense_variant | 58/62 | ENST00000357162.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
VPS13B | ENST00000358544.7 | c.11245G>A | p.Glu3749Lys | missense_variant | 58/62 | 1 | NM_017890.5 | ||
VPS13B | ENST00000357162.7 | c.11170G>A | p.Glu3724Lys | missense_variant | 58/62 | 1 | NM_152564.5 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000789 AC: 12AN: 152172Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000462 AC: 10AN: 216498Hom.: 0 AF XY: 0.0000513 AC XY: 6AN XY: 116988
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GnomAD4 exome AF: 0.0000879 AC: 127AN: 1445176Hom.: 0 Cov.: 32 AF XY: 0.0000934 AC XY: 67AN XY: 717094
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GnomAD4 genome ? AF: 0.0000789 AC: 12AN: 152172Hom.: 0 Cov.: 32 AF XY: 0.000108 AC XY: 8AN XY: 74330
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Cohen syndrome Uncertain:3
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Jul 23, 2020 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Apr 16, 2022 | This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 3749 of the VPS13B protein (p.Glu3749Lys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with VPS13B-related conditions. ClinVar contains an entry for this variant (Variation ID: 657513). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Not Available"). 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Aug 03, 2021 | - - |
Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 11, 2018 | The p.E3749K variant (also known as c.11245G>A), located in coding exon 57 of the VPS13B gene, results from a G to A substitution at nucleotide position 11245. The glutamic acid at codon 3749 is replaced by lysine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
VPS13B-related disorder Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | May 03, 2023 | The VPS13B c.11170G>A variant is predicted to result in the amino acid substitution p.Glu3724Lys. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0081% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/8-100874129-G-A). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Pathogenic
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;D
M_CAP
Uncertain
D
MetaRNN
Uncertain
D;D
MetaSVM
Uncertain
T
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N
REVEL
Uncertain
Sift
Benign
D;D
Sift4G
Uncertain
D;D
Polyphen
D;D
Vest4
MVP
MPC
0.40
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
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Calibrated prediction
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at