11-68386499-C-T

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PM5PP2PP3

The NM_002335.4(LRP5):c.1199C>T(p.Ala400Val) variant causes a missense change. The variant allele was found at a frequency of 0.000275 in 1,614,080 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A400E) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 0 hom. )

Consequence

LRP5
NM_002335.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.87

Variant links:

Genes affected

LRP5 (HGNC:6697): (LDL receptor related protein 5) This gene encodes a transmembrane low-density lipoprotein receptor that binds and internalizes ligands in the process of receptor-mediated endocytosis. This protein also acts as a co-receptor with Frizzled protein family members for transducing signals by Wnt proteins and was originally cloned on the basis of its association with type 1 diabetes mellitus in humans. This protein plays a key role in skeletal homeostasis and many bone density related diseases are caused by mutations in this gene. Mutations in this gene also cause familial exudative vitreoretinopathy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

LRP5 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_002335.4

PM5

Other missense variant is known to change same aminoacid residue: Variant chr11-68386499-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 967240.Status of the report is criteria_provided_single_submitter, 1 stars.

PP2

Missense variant in the LRP5 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 71 curated pathogenic missense variants (we use a threshold of 10). The gene has 23 curated benign missense variants. Gene score misZ: 1.6684 (below the threshold of 3.09). Trascript score misZ: 3.6986 (above the threshold of 3.09). GenCC associations: The gene is linked to exudative vitreoretinopathy 4, polycystic liver disease 4 with or without kidney cysts, polycystic liver disease 1, exudative vitreoretinopathy, osteosclerosis-developmental delay-craniosynostosis syndrome, bone mineral density quantitative trait locus 1, autosomal dominant osteopetrosis 1, hyperostosis corticalis generalisata, osteoporosis-pseudoglioma syndrome, autosomal dominant osteosclerosis, Worth type, inherited retinal dystrophy.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.801

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRP5	NM_002335.4 link	c.1199C>T	p.Ala400Val	missense_variant	Exon 6 of 23	ENST00000294304.12	NP_002326.2	O75197

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LRP5	ENST00000294304.12 link	c.1199C>T	p.Ala400Val	missense_variant	Exon 6 of 23	1	NM_002335.4	ENSP00000294304.6		O75197
LRP5	ENST00000529993.5 link	n.1199C>T		non_coding_transcript_exon_variant	Exon 6 of 23	1		ENSP00000436652.1		E9PHY1

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000223

AC:

AN:

251202

AF XY:

0.000236

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.0000463

Gnomad NFE exome

AF:

0.000396

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000289

AC:

423

AN:

1461744

Hom.:

Cov.:

AF XY:

0.000272

AC XY:

198

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

AC:

AN:

33480

Gnomad4 AMR exome

AF:

0.0000224

AC:

AN:

44724

Gnomad4 ASJ exome

AF:

0.00

AC:

AN:

26130

Gnomad4 EAS exome

AF:

0.0000252

AC:

AN:

39696

Gnomad4 SAS exome

AF:

0.000151

AC:

AN:

86258

Gnomad4 FIN exome

AF:

0.0000563

AC:

AN:

53316

Gnomad4 NFE exome

AF:

0.000350

AC:

389

AN:

1111988

Gnomad4 Remaining exome

AF:

0.000149

AC:

AN:

60384

Heterozygous variant carriers

121

151

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000138

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74480

show subpopulations

Gnomad4 AFR

AF:

0.000144

AC:

0.000144293

AN:

0.000144293

Gnomad4 AMR

AF:

0.00

AC:

AN:

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.000193

AC:

0.00019305

AN:

0.00019305

Gnomad4 SAS

AF:

0.00

AC:

AN:

Gnomad4 FIN

AF:

0.0000941

AC:

0.0000940734

AN:

0.0000940734

Gnomad4 NFE

AF:

0.000191

AC:

0.000191103

AN:

0.000191103

Gnomad4 OTH

AF:

0.00

AC:

AN:

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000139

Hom.:

Bravo

AF:

0.000136

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000455

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000296

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000356

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

May 02, 2018

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 12, 2023

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 34860240) -

Oct 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 400 of the LRP5 protein (p.Ala400Val). This variant is present in population databases (rs201320326, gnomAD 0.04%). This missense change has been observed in individual(s) with familial exudative vitreoretinopathy (PMID: 34860240). ClinVar contains an entry for this variant (Variation ID: 520692). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on LRP5 protein function. This variant disrupts the p.Ala400 amino acid residue in LRP5. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 16252235, 25711638; internal data). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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. -

not specified

Uncertain:1

Dec 09, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: LRP5 c.1199C>T (p.Ala400Val) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00022 in 251202 control chromosomes. The observed variant frequency is approximately 4 fold of the estimated maximal expected allele frequency for a pathogenic variant in LRP5 causing Familial Exudative Vitreoretinopathy phenotype (6.3e-05). However, this finding should be interpreted with caution due to the presence of an LRP5 pseudogene that contains exons 3-9 of the gene, a region that includes this variant. c.1199C>T has been reported in the literature in an individual affected with Familial Exudative Vitreoretinopathy, however, in this study it was also not specified whether they were capable of distinguishing between LRP5 and its pseudogene (Tao_2021). Thus, this report does not provide unequivocal conclusions about association of the variant with Familial Exudative Vitreoretinopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 34860240). ClinVar contains an entry for this variant (Variation ID: 520692). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Inborn genetic diseases

Uncertain:1

Jun 12, 2015

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Osteoporosis;C0432252:Osteoporosis with pseudoglioma;C0432273:Worth disease;C1843330:Autosomal dominant osteopetrosis 1;C1851402:Exudative vitreoretinopathy 1;C1866079:Bone mineral density quantitative trait locus 1;C1866176:Exudative vitreoretinopathy 4;C4693479:Polycystic liver disease 4 with or without kidney cysts

Uncertain:1

Feb 11, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Uncertain

-0.070

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.83

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

M_CAP

Pathogenic

0.68

MetaRNN

Pathogenic

0.80

MetaSVM

Uncertain

0.56

MutationAssessor

Uncertain

2.2

PrimateAI

Uncertain

0.55

PROVEAN

Uncertain

-3.1

REVEL

Uncertain

0.60

Sift

Benign

0.051

Sift4G

Benign

0.062

Polyphen

0.33

Vest4

0.69

MVP

0.58

MPC

0.90

ClinPred

0.14

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.26

gMVP

0.81

Mutation Taster

=17/83

disease causing

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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