rs16856759

Variant names:

• chr2-169295236-A-G
• rs16856759
• NM_004525.3:c.428-526T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_004525.3(LRP2):​c.428-526T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.301 in 151,978 control chromosomes in the GnomAD database, including 7,204 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.30 (7204 hom., cov: 32)
• Consequence: LRP2 NM_004525.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.34
• Publications: 5 publications found

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 Gene-Disease associations (from GenCC):

• Donnai-Barrow syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
• Stickler syndrome

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• intellectual disability

  Inheritance: AD Classification: LIMITED Submitted by: G2P

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.436 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004525.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRP2	NM_004525.3	MANE Select	c.428-526T>C		intron	N/A	NP_004516.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRP2	ENST00000649046.1	MANE Select	c.428-526T>C		intron	N/A	ENSP00000496870.1
	LRP2	ENST00000443831.1	TSL:2	c.428-526T>C		intron	N/A	ENSP00000409813.1

Frequencies

GnomAD3 genomes AF: 0.301 AC: 45695 AN: 151860 Hom.: 7190 Cov.: 32

Gnomad AFR AF: 0.352

Gnomad AMI AF: 0.342

Gnomad AMR AF: 0.444

Gnomad ASJ AF: 0.202

Gnomad EAS AF: 0.341

Gnomad SAS AF: 0.178

Gnomad FIN AF: 0.260

Gnomad MID AF: 0.206

Gnomad NFE AF: 0.255

Gnomad OTH AF: 0.296

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.301 AC: 45740 AN: 151978 Hom.: 7204 Cov.: 32 AF XY: 0.302 AC XY: 22403 AN XY: 74288

African (AFR) AF: 0.352 AC: 14603 AN: 41438

American (AMR) AF: 0.444 AC: 6781 AN: 15258

Ashkenazi Jewish (ASJ) AF: 0.202 AC: 701 AN: 3472

East Asian (EAS) AF: 0.340 AC: 1759 AN: 5166

South Asian (SAS) AF: 0.177 AC: 852 AN: 4806

European-Finnish (FIN) AF: 0.260 AC: 2750 AN: 10566

Middle Eastern (MID) AF: 0.207 AC: 61 AN: 294

European-Non Finnish (NFE) AF: 0.255 AC: 17303 AN: 67954

Other (OTH) AF: 0.293 AC: 619 AN: 2114

Alfa AF: 0.293 Hom.: 1759

Bravo AF: 0.324

Asia WGS AF: 0.288 AC: 999 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.090
DANN	Benign	0.55
PhyloP100		-1.3
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs16856759; hg19: chr2-170151746;