2-169127752-A-ATTT

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_004525.3(LRP2):c.*910_*911insAAA variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0041 (0 hom., cov: 0)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: LRP2 NM_004525.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.306

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]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00408 (605/148130) while in subpopulation NFE AF= 0.00752 (504/67032). AF 95% confidence interval is 0.00698. There are 0 homozygotes in gnomad4. There are 262 alleles in male gnomad4 subpopulation. Median coverage is 0. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LRP2	NM_004525.3	c.*910_*911insAAA		3_prime_UTR_variant	79/79	ENST00000649046.1
LRP2	XM_011511183.4	c.*910_*911insAAA		3_prime_UTR_variant	78/78
LRP2	XM_011511184.3	c.*910_*911insAAA		3_prime_UTR_variant	64/64
LRP2	XM_047444340.1	c.*910_*911insAAA		3_prime_UTR_variant	79/79

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LRP2	ENST00000649046.1	c.*910_*911insAAA		3_prime_UTR_variant	79/79		NM_004525.3	P1

Frequencies

GnomAD3 genomes AF: 0.00409 AC: 606 AN: 148060 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00104

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00134

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00340

Gnomad FIN AF: 0.00181

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00752

Gnomad OTH AF: 0.00345

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 368 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 228

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00408 AC: 605 AN: 148130 Hom.: 0 Cov.: 0 AF XY: 0.00363 AC XY: 262 AN XY: 72080

Gnomad4 AFR AF: 0.00104

Gnomad4 AMR AF: 0.00134

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00320

Gnomad4 FIN AF: 0.00181

Gnomad4 NFE AF: 0.00752

Gnomad4 OTH AF: 0.00342

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Donnai-Barrow syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs11411235; hg19: chr2-169984262;