rs137853960

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.

This summary comes from the ClinGen Evidence Repository: The NM_000527.5(LDLR):c.148G>A (p.Ala50Thr) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying no ACMG/AMP evidence codes as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (specification version 1.2) on October 28th, 2024. LINK:https://erepo.genome.network/evrepo/ui/classification/CA041995/MONDO:0007750/013

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000039 ( 0 hom. )

Consequence

LDLR
NM_000527.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:3

Conservation

PhyloP100: -0.218

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:

LDLR (HGNC:):

LDLR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LDLR	NM_000527.5 linkuse as main transcript	c.148G>A	p.Ala50Thr	missense_variant	2/18	ENST00000558518.6	NP_000518.1	P01130-1A0A024R7D5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LDLR	ENST00000558518.6 linkuse as main transcript	c.148G>A	p.Ala50Thr	missense_variant	2/18	1	NM_000527.5	ENSP00000454071.1		P01130-1

Frequencies

GnomAD3 genomes

AF:

0.000263

AC:

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000820

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000677

AC:

AN:

251180

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135740

show subpopulations

Gnomad AFR exome

AF:

0.000801

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000390

AC:

AN:

1461496

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

727040

show subpopulations

Gnomad4 AFR exome

AF:

0.000866

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.000263

AC:

AN:

152276

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.000818

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000576

Hom.:

Bravo

AF:

0.000287

ExAC

AF:

0.0000906

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Familial hypercholesterolemia

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Mar 08, 2023	This missense variant (also known as p.Ala29Thr in the mature protein) replaces alanine with threonine at codon 50 of the LDLR protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with familial hypercholesterolemia (PMID: 17347910, 10422804, 30293936). This variant has been identified in 21/282594 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The elevated variant allele frequency in the general population indicates that this variant may not be disease-causing. However, additional studies are necessary to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 24, 2024	- -

Hypercholesterolemia, familial, 1

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Sep 23, 2024	This missense variant (also known as p.Ala29Thr in the mature protein) replaces alanine with threonine at codon 50 of the LDLR protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with familial hypercholesterolemia (PMID: 17347910, 10422804, 30293936). This variant has been identified in 21/282594 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The elevated variant allele frequency in the general population indicates that this variant may not be disease-causing. However, additional studies are necessary to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Likely benign, criteria provided, single submitter	literature only	LDLR-LOVD, British Heart Foundation	Mar 25, 2016	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 12, 2016

Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: Reported in probands, but no segregation data; ClinVar: 1 LB, 1 VUS -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Quest Diagnostics Nichols Institute San Juan Capistrano

Oct 22, 2024

The LDLR c.148G>A (p.Ala50Thr) variant (also known as A29T) has been reported in the published literature in individuals with familial hypercholesterolemia (PMIDs: 17347910 (2007), 10422804 (1999), 30293936 (2018)). The frequency of this variant in the general population, 0.00068 (17/24956 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -

Cardiovascular phenotype

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 11, 2022

This alteration is classified as 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.049

BayesDel_noAF

Uncertain

0.060

CADD

Benign

0.35

DANN

Benign

0.96

DEOGEN2

Uncertain

0.49

T;.;.;.;.;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.24

LIST_S2

Benign

0.81

T;T;T;D;T;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.037

T;T;T;T;T;T

MetaSVM

Benign

-0.31

MutationAssessor

Benign

0.66

N;.;N;N;N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.74

N;N;N;N;N;N

REVEL

Uncertain

0.60

Sift

Benign

0.15

T;T;T;T;T;T

Sift4G

Benign

0.25

T;T;T;T;T;T

Polyphen

0.016

B;.;.;.;.;.

Vest4

0.19

MutPred

0.49

Gain of phosphorylation at A50 (P = 0.0643);Gain of phosphorylation at A50 (P = 0.0643);Gain of phosphorylation at A50 (P = 0.0643);Gain of phosphorylation at A50 (P = 0.0643);Gain of phosphorylation at A50 (P = 0.0643);Gain of phosphorylation at A50 (P = 0.0643);

MVP

1.0

MPC

0.22

ClinPred

0.0079

GERP RS

-5.7

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.8

Varity_R

0.080

gMVP

0.84

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