Genetic Variant LRP1B:p.Arg4471Lys (chr2-140239445-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_018557.3(LRP1B):c.13412G>A(p.Arg4471Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000417 in 1,583,186 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

LRP1B
NM_018557.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.27

Variant links:

Genes affected

LRP1B (HGNC:6693): (LDL receptor related protein 1B) This gene encodes a member of the low density lipoprotein (LDL) receptor family. These receptors play a wide variety of roles in normal cell function and development due to their interactions with multiple ligands. Disruption of this gene has been reported in several types of cancer. [provided by RefSeq, Jun 2016]

LRP1B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.20547456).

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRP1B	NM_018557.3 link	c.13412G>A	p.Arg4471Lys	missense_variant	Exon 88 of 91	ENST00000389484.8	NP_061027.2	Q9NZR2
LRP1B	XM_017004341.2 link	c.13022G>A	p.Arg4341Lys	missense_variant	Exon 88 of 91		XP_016859830.1
LRP1B	XM_017004342.1 link	c.8264G>A	p.Arg2755Lys	missense_variant	Exon 59 of 62		XP_016859831.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LRP1B	ENST00000389484.8 link	c.13412G>A	p.Arg4471Lys	missense_variant	Exon 88 of 91	1	NM_018557.3	ENSP00000374135.3	Q9NZR2
LRP1B	ENST00000437977.5 link	c.2105G>A	p.Arg702Lys	missense_variant	Exon 15 of 17	5		ENSP00000415052.1	H0Y7T7
LRP1B	ENST00000442974.1 link	c.719G>A	p.Arg240Lys	missense_variant	Exon 6 of 7	5		ENSP00000393859.1	H7C0A8

Frequencies

GnomAD3 genomes

AF:

0.0000332

AC:

AN:

150764

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000744

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000541

AC:

AN:

240164

Hom.:

AF XY:

0.0000539

AC XY:

AN XY:

129990

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000119

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000426

AC:

AN:

1432422

Hom.:

Cov.:

AF XY:

0.0000393

AC XY:

AN XY:

713190

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000559

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000332

AC:

AN:

150764

Hom.:

Cov.:

AF XY:

0.0000408

AC XY:

AN XY:

73610

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000744

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000566

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000660

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 23, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.13412G>A (p.R4471K) alteration is located in exon 88 (coding exon 88) of the LRP1B gene. This alteration results from a G to A substitution at nucleotide position 13412, causing the arginine (R) at amino acid position 4471 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.082

Eigen

Benign

0.065

Eigen_PC

Benign

0.20

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.83

M_CAP

Benign

0.0083

MetaRNN

Benign

0.21

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.4

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-0.51

REVEL

Benign

0.056

Sift

Benign

0.13

Sift4G

Benign

0.068

Polyphen

0.13

Vest4

0.41

MutPred

0.40

Gain of methylation at R4471 (P = 0.0214);

MVP

0.14

MPC

0.21

ClinPred

0.13

GERP RS

4.5

Varity_R

0.19

gMVP

0.49

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