rs202049029

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PM2BS3PS4_SupportingPP4BP4

This summary comes from the ClinGen Evidence Repository: NM_000527.5(LDLR):c.2575G>A (p.Val859Met) variant is classified as Likely benign for Familial Hypercholesterolemia by applying evidence codes (BS3, BP4, and PM2, PP4 and PS4_Supporting) as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1101/2021.03.17.21252755). The supporting evidence is as follows: BS3 - PMID:25386756 - Level 1 assay - Expression >90%, uptake 90%, degradation of 125I-LDL 90%.BP4 - REVEL: 0,209. Score is below 0,5. Splicing predictors - negative. so BP4 is met.PM2 - PopMa MAF = 0.0001629 (0.01629%) in 'Other' (gnomAD v2.1.1).PP4 - Variant meets PM2 and is identified in 2 unrelated index cases who fulfill Simon-Broome criteria for FH (Cardiovascular Research Group,Instituto Nacional de Saude Doutor Ricardo Jorge).PS4_supporting - Variant meets PM2 and is identified in 2 unrelated index cases from Cardiovascular Research Group,Instituto Nacional de Saude Doutor Ricardo Jorge who fulfill Simon-Broome criteria for FH.Variant has 1 Strong and 1 Supporting evidence codes towards Benign, enough to classify as Likely benign, and only 1 Moderate and 1 Supporting evidence codes towards Pathogenic. The Benign criteria overwhelms the Pathogenic criteria, so we are confident in classifying this variant as Likely benign LINK:https://erepo.genome.network/evrepo/ui/classification/CA041346/MONDO:0007750/013

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

LDLR
NM_000527.5 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:4B:5

Conservation

PhyloP100: 0.542

Variant links:

Genes affected

LDLR (HGNC:6547): (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. The encoded protein is normally bound at the cell membrane, where it binds low density lipoprotein/cholesterol and is taken into the cell. Lysosomes release the cholesterol, which is made available for repression of microsomal enzyme 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase, the rate-limiting step in cholesterol synthesis. At the same time, a reciprocal stimulation of cholesterol ester synthesis takes place. Mutations in this gene cause the autosomal dominant disorder, familial hypercholesterolemia. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2022]

LDLR links:

SPC24 (HGNC:26913): (SPC24 component of NDC80 kinetochore complex) Predicted to be involved in cell division. Located in nucleolus and nucleoplasm. Part of Ndc80 complex. [provided by Alliance of Genome Resources, Apr 2022]

SPC24 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PS4

For more information check the summary or visit ClinGen Evidence Repository.

PM2

For more information check the summary or visit ClinGen Evidence Repository.

PP4

For more information check the summary or visit ClinGen Evidence Repository.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BS3

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LDLR	NM_000527.5 link	c.2575G>A	p.Val859Met	missense_variant	Exon 18 of 18	ENST00000558518.6	NP_000518.1	P01130-1A0A024R7D5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LDLR	ENST00000558518.6 link	c.2575G>A	p.Val859Met	missense_variant	Exon 18 of 18	1	NM_000527.5	ENSP00000454071.1		P01130-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251476

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135916

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000335

AC:

AN:

1461854

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000405

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152314

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000708

Hom.:

Bravo

AF:

0.0000453

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:4Benign:5

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Hypercholesterolemia, familial, 1

Uncertain:2Benign:2

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Mar 25, 2016

LDLR-LOVD, British Heart Foundation

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: literature only

- -

Jun 24, 2021

ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel

Significance: Likely benign

Review Status: reviewed by expert panel

Collection Method: curation

NM_000527.5(LDLR):c.2575G>A (p.Val859Met) variant is classified as Likely benign for Familial Hypercholesterolemia by applying evidence codes (BS3, BP4, and PM2, PP4 and PS4_Supporting) as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1101/2021.03.17.21252755). The supporting evidence is as follows: BS3 - PMID: 25386756 - Level 1 assay - Expression >90%, uptake 90%, degradation of 125I-LDL 90%. BP4 - REVEL: 0,209. Score is below 0,5. Splicing predictors - negative. so BP4 is met. PM2 - PopMa MAF = 0.0001629 (0.01629%) in 'Other' (gnomAD v2.1.1). PP4 - Variant meets PM2 and is identified in 2 unrelated index cases who fulfill Simon-Broome criteria for FH (Cardiovascular Research Group,Instituto Nacional de Saude Doutor Ricardo Jorge). PS4_supporting - Variant meets PM2 and is identified in 2 unrelated index cases from Cardiovascular Research Group,Instituto Nacional de Saude Doutor Ricardo Jorge who fulfill Simon-Broome criteria for FH. Variant has 1 Strong and 1 Supporting evidence codes towards Benign, enough to classify as Likely benign, and only 1 Moderate and 1 Supporting evidence codes towards Pathogenic. The Benign criteria overwhelms the Pathogenic criteria, so we are confident in classifying this variant as Likely benign -

Mar 01, 2016

Cardiovascular Research Group, Instituto Nacional de Saude Doutor Ricardo Jorge

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: research

0/190 non-FH alleles -

Familial hypercholesterolemia

Uncertain:1Benign:2

Feb 21, 2023

Color Diagnostics, LLC DBA Color Health

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 859 of the LDLR protein (p.Val859Met). This variant is present in population databases (rs202049029, gnomAD 0.007%). This missense change has been observed in individual(s) with clinical features of LDLR-related conditions (PMID: 23021490, 25487149). ClinVar contains an entry for this variant (Variation ID: 252360). 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 LDLR protein function with a negative predictive value of 95%. Experimental studies have shown that this missense change does not substantially affect LDLR function (PMID: 25386756). 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. -

Jun 04, 2021

Natera, Inc.

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Cardiovascular phenotype

Uncertain:1

Feb 20, 2019

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.V859M variant (also known as c.2575G>A), located in coding exon 18 of the LDLR gene, results from a G to A substitution at nucleotide position 2575. The valine at codon 859 is replaced by methionine, an amino acid with highly similar properties. This variant (also referred to as V838M) has been detected in a proband described as having possible familial hypercholesterolemia; however, segregation with disease in the family was unclear (Bourbon M et al. Atherosclerosis, 2008 Feb;196:633-42; Silva S et al. Atherosclerosis, 2012 Nov;225:128-34). This variant has also been detected in a myocardial infarction cohort in association with high LDL; however, details were limited (Do R et al. Nature, 2015 Feb;518:102-6; Thormaehlen AS et al. PLoS Genet., 2015 Feb;11:e1004855). This variant has also been detected in an exome cohort (Lange LA et al. Am. J. Hum. Genet., 2014 Feb;94:233-45). Experimental studies have indicated that cells expressing this variant functioned similarly to wild type (Silva S et al. Atherosclerosis, 2012 Nov;225:128-34; Etxebarria A et al. PLoS ONE, 2014 Nov;9:e112677). This amino acid position is not well conserved in available vertebrate species, and methionine is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not provided

Benign:1

Sep 06, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 25741862, 29874871, 25781017, 25647241, 25386756, 17765246, 25487149) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Benign

0.39

T;.;.;.;.

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.058

LIST_S2

Benign

0.78

T;T;T;T;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.053

T;T;T;T;T

MetaSVM

Benign

-0.57

MutationAssessor

Benign

1.2

L;.;.;.;.

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.43

N;N;N;N;N

REVEL

Benign

0.21

Sift

Benign

0.13

T;T;T;T;T

Sift4G

Benign

0.078

T;T;T;T;T

Polyphen

0.029

B;.;.;.;.

Vest4

0.071

MVP

0.95

MPC

0.23

ClinPred

0.069

GERP RS

-4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.078

gMVP

0.78

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over