19-11107427-C-T

Position:

chr19-11107427-C-T

Variant summary

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

This summary comes from the ClinGen Evidence Repository: The NM_000527.5(LDLR):c.853C>T (p.His285Tyr) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying ACMG/AMP evidence codes PM2 and BP4 as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (specification version 1.2) on 24 March 2023. The supporting evidence is as follows: PM2: PopMax MAF = 0.00003 (0.003%) in European (Non-Finnish) exomes (gnomAD v2.1.1).BP4: REVEL= 0.489, splicing evaluation required.A.) Not on limits.B.) Does not create AG.C.) There is an AG nearby.MES scores: variant cryptic = -2.89, wt cryptic = -4.15Cryptic scores are negative, so cryptic site is not used - variant is not predicted to alter splicing. BP4 is met. LINK:https://erepo.genome.network/evrepo/ui/classification/CA023780/MONDO:0007750/013

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

LDLR
NM_000527.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:1U:2O:1

Conservation

PhyloP100: 1.64

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

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

BP4

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LDLR	NM_000527.5 linkuse as main transcript	c.853C>T	p.His285Tyr	missense_variant	6/18	ENST00000558518.6	NP_000518.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LDLR	ENST00000558518.6 linkuse as main transcript	c.853C>T	p.His285Tyr	missense_variant	6/18	1	NM_000527.5	ENSP00000454071	P3	P01130-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251440

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135910

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000343

AC:

AN:

1459652

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726164

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:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000307

Hom.:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:2Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hypercholesterolemia, familial, 1

Pathogenic:1Uncertain:1

Pathogenic, no assertion criteria provided	research	Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum	-	- -
Uncertain significance, criteria provided, single submitter	research	Laboratory of Genetics and Molecular Cardiology, University of São Paulo	Mar 01, 2016	- -

Familial hypercholesterolemia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Jul 01, 2022

This missense variant (also known as p.His264Tyr in the mature protein) replaces histidine with tyrosine at codon 285 of the LDLR protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual suspected of having familial hypercholesterolemia (PMID: 25461735). This variant has been identified in 3/251440 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

not provided

Other:1

not provided, no classification provided

in vitro

Dept. of Genetics and Pharmacogenomics, Merck Research Labs

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.040

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.69

D;.;.;.;.;.

Eigen

Benign

0.016

Eigen_PC

Benign

0.057

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.91

D;D;D;D;D;D

M_CAP

Pathogenic

0.72

MetaRNN

Uncertain

0.62

D;D;D;D;D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Benign

0.71

N;.;.;.;.;N

MutationTaster

Benign

0.74

D;D;D;D;D;D;D

PrimateAI

Benign

0.37

PROVEAN

Uncertain

-2.5

N;D;D;N;D;N

REVEL

Uncertain

0.49

Sift

Benign

0.044

D;D;D;D;D;D

Sift4G

Uncertain

0.042

D;T;T;T;D;D

Polyphen

0.28

B;.;.;.;.;.

Vest4

0.39

MutPred

0.55

Loss of ubiquitination at K283 (P = 0.0573);Loss of ubiquitination at K283 (P = 0.0573);.;.;.;Loss of ubiquitination at K283 (P = 0.0573);

MVP

1.0

MPC

0.64

ClinPred

0.73

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.39

gMVP

0.76

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