11-68312715-A-T

Variant names:

• chr11-68312715-A-T
• NM_002335.4:c.1A>T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP3_Strong PP5_Moderate

The NM_001291902.2(LRP5):​c.-1765A>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: LRP5 NM_001291902.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 1.75

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.977
• PP5: Variant 11-68312715-A-T is Pathogenic according to our data. Variant chr11-68312715-A-T is described in ClinVar as [Pathogenic]. Clinvar id is 2985040.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRP5	NM_002335.4	c.1A>T	p.Met1?	initiator_codon_variant	Exon 1 of 23	ENST00000294304.12	NP_002326.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LRP5	ENST00000294304.12	c.1A>T	p.Met1?	initiator_codon_variant	Exon 1 of 23	1	NM_002335.4	ENSP00000294304.6
LRP5	ENST00000529993.5	n.1A>T		non_coding_transcript_exon_variant	Exon 1 of 23	1		ENSP00000436652.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 888420 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 420286

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Aug 14, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

For these reasons, this variant has been classified as Pathogenic. This sequence change affects the initiator methionine of the LRP5 mRNA. The next in-frame methionine is located at codon 165. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with LRP5-related conditions. This variant disrupts a region of the LRP5 protein in which other variant(s) (p.Trp79Arg) have been determined to be pathogenic (PMID: 25384351, 28192794). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
CADD	Benign	21
DANN	Benign	0.74
DEOGEN2	Benign	0.27	T
Eigen	Benign	-0.57
Eigen_PC	Benign	-0.58
FATHMM_MKL	Benign	0.056	N
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.98	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	-0.16	T
PROVEAN	Benign	-0.080	N
REVEL	Uncertain	0.40
Sift	Pathogenic	0.0	D
Polyphen		0.0060	B
Vest4		0.54
MutPred		0.94		Gain of stability (P = 0.025);
MVP		0.84
ClinPred		0.12	T
GERP RS		0.81
Varity_R		0.86
gMVP		0.33

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-68080183;