2-169150995-G-A

Position:

chr2-169150995-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.12493C>T(p.Arg4165Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000026 in 1,613,906 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 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

LRP2
NM_004525.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.66

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, 0.865

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRP2	NM_004525.3 linkuse as main transcript	c.12493C>T	p.Arg4165Cys	missense_variant	68/79	ENST00000649046.1	NP_004516.2	P98164Q7Z5C0Q7Z5C1
LRP2	XM_011511183.4 linkuse as main transcript	c.12364C>T	p.Arg4122Cys	missense_variant	67/78		XP_011509485.1
LRP2	XM_047444340.1 linkuse as main transcript	c.11569C>T	p.Arg3857Cys	missense_variant	68/79		XP_047300296.1
LRP2	XM_011511184.3 linkuse as main transcript	c.10204C>T	p.Arg3402Cys	missense_variant	53/64		XP_011509486.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRP2	ENST00000649046.1 linkuse as main transcript	c.12493C>T	p.Arg4165Cys	missense_variant	68/79	NM_004525.3	ENSP00000496870.1	P98164
LRP2	ENST00000649153.1 linkuse as main transcript	n.3391C>T		non_coding_transcript_exon_variant	20/30		ENSP00000497617.1	A0A3B3IT64
LRP2	ENST00000650252.1 linkuse as main transcript	n.*204C>T		non_coding_transcript_exon_variant	13/24		ENSP00000496887.1	A0A3B3IRR0
LRP2	ENST00000650252.1 linkuse as main transcript	n.*204C>T		3_prime_UTR_variant	13/24		ENSP00000496887.1	A0A3B3IRR0

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000517

AC:

AN:

251294

Hom.:

AF XY:

0.0000515

AC XY:

AN XY:

135798

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:

0.000261

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000274

AC:

AN:

1461672

Hom.:

Cov.:

AF XY:

0.0000303

AC XY:

AN XY:

727140

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000180

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74418

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000264

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 01, 2016

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 04, 2022

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 4165 of the LRP2 protein (p.Arg4165Cys). This variant is present in population databases (rs570499038, gnomAD 0.03%). 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: 521168). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.47

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.30

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.64

D;D

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.95

.;D

M_CAP

Uncertain

0.16

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Uncertain

0.66

MutationAssessor

Uncertain

2.6

M;M

PrimateAI

Uncertain

0.52

PROVEAN

Pathogenic

-6.2

.;D

REVEL

Pathogenic

0.76

Sift

Uncertain

0.0010

.;D

Sift4G

Pathogenic

0.0

.;D

Polyphen

1.0

D;D

Vest4

0.63

MutPred

0.69

Loss of MoRF binding (P = 0.0127);Loss of MoRF binding (P = 0.0127);

MVP

0.93

MPC

2.0

ClinPred

0.88

GERP RS

5.0

Varity_R

0.55

gMVP

0.95

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