1-25557259-C-T

Position:

chr1-25557259-C-T

Variant summary

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

The NM_015627.3(LDLRAP1):c.451C>T(p.Arg151Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,597,652 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R151Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00025 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

LDLRAP1
NM_015627.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 1.71

Variant links:

Genes affected

LDLRAP1 (HGNC:18640): (low density lipoprotein receptor adaptor protein 1) The protein encoded by this gene is a cytosolic protein which contains a phosphotyrosine binding (PTD) domain. The PTD domain has been found to interact with the cytoplasmic tail of the LDL receptor. Mutations in this gene lead to LDL receptor malfunction and cause the disorder autosomal recessive hypercholesterolaemia. [provided by RefSeq, Jul 2008]

LDLRAP1 links:

Genome browser will be placed here

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=0.3870154).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LDLRAP1	NM_015627.3 linkuse as main transcript	c.451C>T	p.Arg151Trp	missense_variant	4/9	ENST00000374338.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
LDLRAP1	ENST00000374338.5 linkuse as main transcript	c.451C>T	p.Arg151Trp	missense_variant	4/9	1	NM_015627.3	P1
LDLRAP1	ENST00000462394.1 linkuse as main transcript	n.199C>T		non_coding_transcript_exon_variant	2/2	2
LDLRAP1	ENST00000488127.1 linkuse as main transcript	n.921C>T		non_coding_transcript_exon_variant	3/7	2

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

151708

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000865

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00182

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000243

AC:

AN:

251170

Hom.:

AF XY:

0.000258

AC XY:

AN XY:

135748

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00120

Gnomad NFE exome

AF:

0.000273

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000142

AC:

205

AN:

1445944

Hom.:

Cov.:

AF XY:

0.000146

AC XY:

105

AN XY:

719866

show subpopulations

Gnomad4 AFR exome

AF:

0.0000602

Gnomad4 AMR exome

AF:

0.0000899

Gnomad4 ASJ exome

AF:

0.000116

Gnomad4 EAS exome

AF:

0.0000255

Gnomad4 SAS exome

AF:

0.0000233

Gnomad4 FIN exome

AF:

0.00103

Gnomad4 NFE exome

AF:

0.000120

Gnomad4 OTH exome

AF:

0.000100

GnomAD4 genome

AF:

0.000250

AC:

AN:

151708

Hom.:

Cov.:

AF XY:

0.000324

AC XY:

AN XY:

74108

show subpopulations

Gnomad4 AFR

AF:

0.0000725

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000865

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00182

Gnomad4 NFE

AF:

0.000191

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000201

Hom.:

Bravo

AF:

0.0000907

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000247

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hypercholesterolemia, familial, 4

Uncertain:4

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Apr 11, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Jul 20, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Mar 28, 2022	This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 151 of the LDLRAP1 protein (p.Arg151Trp). This variant is present in population databases (rs148916767, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with LDLRAP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 296979). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. 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. -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 09, 2020

The p.R151W variant (also known as c.451C>T), located in coding exon 4 of the LDLRAP1 gene, results from a C to T substitution at nucleotide position 451. The arginine at codon 151 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Familial hypercholesterolemia

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Feb 06, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.54

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.090

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.44

Eigen

Uncertain

0.68

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.85

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.034

MetaRNN

Benign

0.39

MetaSVM

Benign

-0.31

MutationAssessor

Uncertain

2.4

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.85

PROVEAN

Pathogenic

-6.3

REVEL

Benign

0.29

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.72

MVP

0.86

MPC

0.78

ClinPred

0.34

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.88

gMVP

0.58

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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