rs368619363

Positions:

chr2-169259053-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2PP2PP3_Moderate

The NM_004525.3(LRP2):c.2485C>T(p.Arg829Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000775 in 1,613,106 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

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

Exomes 𝑓: 0.000081 ( 0 hom. )

Consequence

LRP2
NM_004525.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 2.17

Variant links:

Genes affected

LRP2 (HGNC:6694): (LDL receptor related protein 2) The protein encoded by this gene, low density lipoprotein-related protein 2 (LRP2) or megalin, is a multi-ligand endocytic receptor that is expressed in many different tissues but primarily in absorptive epithilial tissues such as the kidney. This glycoprotein has a large amino-terminal extracellular domain, a single transmembrane domain, and a short carboxy-terminal cytoplasmic tail. The extracellular ligand-binding-domains bind diverse macromolecules including albumin, apolipoproteins B and E, and lipoprotein lipase. The LRP2 protein is critical for the reuptake of numerous ligands, including lipoproteins, sterols, vitamin-binding proteins, and hormones. This protein also has a role in cell-signaling; extracellular ligands include parathyroid horomones and the morphogen sonic hedgehog while cytosolic ligands include MAP kinase scaffold proteins and JNK interacting proteins. Recycling of this membrane receptor is regulated by phosphorylation of its cytoplasmic domain. Mutations in this gene cause Donnai-Barrow syndrome (DBS) and facio-oculoacoustico-renal syndrome (FOAR).[provided by RefSeq, Aug 2009]

LRP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), LRP2. . Trascript score misZ 4.5094 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, autosomal dominant 40, Stickler syndrome, Donnai-Barrow syndrome.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.923

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRP2	NM_004525.3 linkuse as main transcript	c.2485C>T	p.Arg829Trp	missense_variant	17/79	ENST00000649046.1	NP_004516.2	P98164Q7Z5C0Q7Z5C1
LRP2	XM_011511183.4 linkuse as main transcript	c.2485C>T	p.Arg829Trp	missense_variant	17/78		XP_011509485.1
LRP2	XM_047444340.1 linkuse as main transcript	c.1561C>T	p.Arg521Trp	missense_variant	17/79		XP_047300296.1
LRP2	XM_011511184.3 linkuse as main transcript	c.196C>T	p.Arg66Trp	missense_variant	2/64		XP_011509486.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRP2	ENST00000649046.1 linkuse as main transcript	c.2485C>T	p.Arg829Trp	missense_variant	17/79		NM_004525.3	ENSP00000496870.1		P98164
LRP2	ENST00000443831.1 linkuse as main transcript	c.2074C>T	p.Arg692Trp	missense_variant	15/23	2		ENSP00000409813.1		E9PC35

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151870

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000657

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:

0.0000736

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251112

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135706

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000580

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:

0.0000808

AC:

118

AN:

1461236

Hom.:

Cov.:

AF XY:

0.0000812

AC XY:

AN XY:

726938

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000672

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:

0.000101

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000461

AC:

AN:

151870

Hom.:

Cov.:

AF XY:

0.0000270

AC XY:

AN XY:

74158

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.0000657

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000736

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000381

Hom.:

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Donnai-Barrow syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 15, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 31, 2018	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Jun 05, 2014

- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 18, 2022

The c.2485C>T (p.R829W) alteration is located in exon 17 (coding exon 17) of the LRP2 gene. This alteration results from a C to T substitution at nucleotide position 2485, causing the arginine (R) at amino acid position 829 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 26, 2022

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 829 of the LRP2 protein (p.Arg829Trp). This variant is present in population databases (rs368619363, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with LRP2-related conditions. ClinVar contains an entry for this variant (Variation ID: 211394). 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 expected to disrupt LRP2 protein function. 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

Pathogenic

0.66

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.27

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.58

D;D;T

Eigen

Uncertain

0.35

Eigen_PC

Benign

0.16

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.97

.;D;D

M_CAP

Pathogenic

0.40

MetaRNN

Pathogenic

0.92

D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.1

H;H;.

PrimateAI

Benign

0.48

PROVEAN

Pathogenic

-6.6

.;D;D

REVEL

Pathogenic

0.73

Sift

Uncertain

0.0020

.;D;D

Sift4G

Pathogenic

0.0010

.;D;D

Polyphen

1.0

D;D;D

Vest4

0.88, 0.89

MVP

0.91

MPC

0.88

ClinPred

0.99

GERP RS

3.9

Varity_R

0.54

gMVP

0.91

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

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