rs864309648

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_002336.3(LRP6):​c.56C>T​(p.Ala19Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000205 in 1,460,934 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

LRP6
NM_002336.3 missense, splice_region

Scores

3
7
8
Splicing: ADA: 0.03102
2

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 4.49
Variant links:
Genes affected
LRP6 (HGNC:6698): (LDL receptor related protein 6) This gene encodes a member of the low density lipoprotein (LDL) receptor gene family. LDL receptors are transmembrane cell surface proteins involved in receptor-mediated endocytosis of lipoprotein and protein ligands. The protein encoded by this gene functions as a receptor or, with Frizzled, a co-receptor for Wnt and thereby transmits the canonical Wnt/beta-catenin signaling cascade. Through its interaction with the Wnt/beta-catenin signaling cascade this gene plays a role in the regulation of cell differentiation, proliferation, and migration and the development of many cancer types. This protein undergoes gamma-secretase dependent RIP- (regulated intramembrane proteolysis) processing but the precise locations of the cleavage sites have not been determined.[provided by RefSeq, Dec 2009]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.35767788).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
LRP6NM_002336.3 linkc.56C>T p.Ala19Val missense_variant, splice_region_variant Exon 2 of 23 ENST00000261349.9 NP_002327.2 O75581

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
LRP6ENST00000261349.9 linkc.56C>T p.Ala19Val missense_variant, splice_region_variant Exon 2 of 23 1 NM_002336.3 ENSP00000261349.4 O75581
LRP6ENST00000543091.1 linkc.56C>T p.Ala19Val missense_variant, splice_region_variant Exon 2 of 23 1 ENSP00000442472.1 F5H7J9
LRP6ENST00000535731.1 linkc.-5+22026C>T intron_variant Intron 1 of 2 3 ENSP00000439765.1 F5H0Z3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000400
AC:
1
AN:
249966
Hom.:
0
AF XY:
0.00000739
AC XY:
1
AN XY:
135230
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000547
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000205
AC:
3
AN:
1460934
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
726752
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Tooth agenesis, selective, 7 Pathogenic:1
Oct 01, 2015
OMIM
Significance: Pathogenic
Review Status: no assertion criteria provided
Collection Method: literature only

- -

not provided Uncertain:1
Nov 27, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 19 of the LRP6 protein (p.Ala19Val). This variant is present in population databases (no rsID available, gnomAD 0.006%). This missense change has been observed in individual(s) with oligodontia (PMID: 26387593). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 218879). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. Experimental studies have shown that this missense change affects LRP6 function (PMID: 26387593). 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.43
BayesDel_addAF
Benign
-0.053
T
BayesDel_noAF
Benign
-0.14
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.52
D;T
Eigen
Uncertain
0.25
Eigen_PC
Uncertain
0.30
FATHMM_MKL
Pathogenic
0.98
D
M_CAP
Pathogenic
0.34
D
MetaRNN
Benign
0.36
T;T
MetaSVM
Uncertain
0.52
D
MutationAssessor
Benign
1.3
L;.
PrimateAI
Pathogenic
0.84
D
PROVEAN
Benign
-1.7
N;N
REVEL
Uncertain
0.40
Sift
Benign
0.083
T;T
Sift4G
Benign
0.11
T;T
Polyphen
0.90
P;P
Vest4
0.27
MutPred
0.55
Loss of sheet (P = 0.1398);Loss of sheet (P = 0.1398);
MVP
0.56
MPC
0.58
ClinPred
0.40
T
GERP RS
3.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.17
gMVP
0.60

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.031
dbscSNV1_RF
Benign
0.21
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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs864309648; hg19: chr12-12397589; API