rs145995735

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_003383.5(VLDLR):​c.732C>G​(p.Ile244Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000396 in 1,614,190 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict 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. I244I) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00031 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00041 ( 2 hom. )

Consequence

VLDLR
NM_003383.5 missense

Scores

2
17

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:2O:1

Conservation

PhyloP100: 1.42

Publications

3 publications found
Variant links:
Genes affected
VLDLR (HGNC:12698): (very low density lipoprotein receptor) The low density lipoprotein receptor (LDLR) gene family consists of cell surface proteins involved in receptor-mediated endocytosis of specific ligands. This gene encodes a lipoprotein receptor that is a member of the LDLR family and plays important roles in VLDL-triglyceride metabolism and the reelin signaling pathway. Mutations in this gene cause VLDLR-associated cerebellar hypoplasia. Alternative splicing generates multiple transcript variants encoding distinct isoforms for this gene. [provided by RefSeq, Aug 2009]
VLDLR Gene-Disease associations (from GenCC):
  • cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 1
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
  • cerebellar ataxia, intellectual disability, and dysequilibrium
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.031464398).
BP6
Variant 9-2643443-C-G is Benign according to our data. Variant chr9-2643443-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 212561.
BS1
Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000309 (47/152314) while in subpopulation SAS AF = 0.00145 (7/4830). AF 95% confidence interval is 0.000679. There are 0 homozygotes in GnomAd4. There are 17 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
VLDLRNM_003383.5 linkc.732C>G p.Ile244Met missense_variant Exon 5 of 19 ENST00000382100.8 NP_003374.3 P98155-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
VLDLRENST00000382100.8 linkc.732C>G p.Ile244Met missense_variant Exon 5 of 19 1 NM_003383.5 ENSP00000371532.2 P98155-1

Frequencies

GnomAD3 genomes
AF:
0.000309
AC:
47
AN:
152196
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00145
Gnomad FIN
AF:
0.0000941
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000500
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.000481
AC:
121
AN:
251378
AF XY:
0.000515
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.000202
Gnomad ASJ exome
AF:
0.000298
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000139
Gnomad NFE exome
AF:
0.000563
Gnomad OTH exome
AF:
0.000978
GnomAD4 exome
AF:
0.000406
AC:
593
AN:
1461876
Hom.:
2
Cov.:
31
AF XY:
0.000454
AC XY:
330
AN XY:
727236
show subpopulations
African (AFR)
AF:
0.0000597
AC:
2
AN:
33480
American (AMR)
AF:
0.000179
AC:
8
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00123
AC:
106
AN:
86256
European-Finnish (FIN)
AF:
0.000187
AC:
10
AN:
53414
Middle Eastern (MID)
AF:
0.00347
AC:
20
AN:
5768
European-Non Finnish (NFE)
AF:
0.000366
AC:
407
AN:
1112002
Other (OTH)
AF:
0.000662
AC:
40
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.480
Heterozygous variant carriers
0
45
90
134
179
224
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000309
AC:
47
AN:
152314
Hom.:
0
Cov.:
32
AF XY:
0.000228
AC XY:
17
AN XY:
74484
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41548
American (AMR)
AF:
0.000196
AC:
3
AN:
15310
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5176
South Asian (SAS)
AF:
0.00145
AC:
7
AN:
4830
European-Finnish (FIN)
AF:
0.0000941
AC:
1
AN:
10622
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000500
AC:
34
AN:
68038
Other (OTH)
AF:
0.000473
AC:
1
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.493
Heterozygous variant carriers
0
3
6
9
12
15
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000401
Hom.:
0
Bravo
AF:
0.000268
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.000581
AC:
5
ExAC
AF:
0.000585
AC:
71
Asia WGS
AF:
0.000577
AC:
2
AN:
3478
EpiCase
AF:
0.000818
EpiControl
AF:
0.000948

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:4Benign:2Other:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 1 Uncertain:1Other:1
Jan 13, 2018
Illumina Laboratory Services, Illumina
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

-
GenomeConnect - Brain Gene Registry
Significance:not provided
Review Status:no classification provided
Collection Method:phenotyping only

Variant classified as Uncertain significance and reported on 12-06-2012 by Baylor College of Medicine. Assertions are reported exactly as they appear on the patient provided laboratory report. GenomeConnect does not attempt to reinterpret the variant. The IDDRC-CTSA National Brain Gene Registry (BGR) is a study funded by the U.S. National Center for Advancing Translational Sciences (NCATS) and includes 13 Intellectual and Developmental Disability Research Center (IDDRC) institutions. The study is led by Principal Investigator Dr. Philip Payne from Washington University. The BGR is a data commons of gene variants paired with subject clinical information. This database helps scientists learn more about genetic changes and their impact on the brain and behavior. Participation in the Brain Gene Registry requires participation in GenomeConnect. More information about the Brain Gene Registry can be found on the study website - https://braingeneregistry.wustl.edu/. -

not provided Benign:2
Mar 05, 2021
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 33111339) -

Sep 03, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not specified Uncertain:1
Feb 10, 2015
Genetic Services Laboratory, University of Chicago
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Inborn genetic diseases Uncertain:1
May 09, 2022
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.732C>G (p.I244M) alteration is located in exon 5 (coding exon 5) of the VLDLR gene. This alteration results from a C to G substitution at nucleotide position 732, causing the isoleucine (I) at amino acid position 244 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Congenital cerebellar hypoplasia Uncertain:1
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.29
T
BayesDel_noAF
Benign
-0.23
CADD
Benign
18
DANN
Benign
0.97
DEOGEN2
Benign
0.25
T;.
Eigen
Benign
-0.082
Eigen_PC
Benign
0.13
FATHMM_MKL
Benign
0.75
D
LIST_S2
Benign
0.84
T;T
M_CAP
Benign
0.014
T
MetaRNN
Benign
0.031
T;T
MetaSVM
Uncertain
0.16
D
MutationAssessor
Benign
0.21
N;N
PhyloP100
1.4
PrimateAI
Benign
0.44
T
PROVEAN
Benign
0.25
N;N
REVEL
Uncertain
0.36
Sift
Benign
0.12
T;T
Sift4G
Benign
0.13
T;T
Polyphen
0.0
B;B
Vest4
0.11
MVP
0.78
MPC
0.10
ClinPred
0.023
T
GERP RS
5.5
PromoterAI
-0.017
Neutral
Varity_R
0.14
gMVP
0.27
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs145995735; hg19: chr9-2643443; API