4-3516151-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002337.4(LRPAP1):c.799G>A(p.Ala267Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000442 in 1,582,110 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000045 ( 1 hom. )

Consequence

LRPAP1
NM_002337.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.01

Variant links:

Genes affected

LRPAP1 (HGNC:6701): (LDL receptor related protein associated protein 1) This gene encodes a protein that interacts with the low density lipoprotein (LDL) receptor-related protein and facilitates its proper folding and localization by preventing the binding of ligands. Mutations in this gene have been identified in individuals with myopia 23. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2013]

LRPAP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06643042).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LRPAP1	NM_002337.4 linkuse as main transcript	c.799G>A	p.Ala267Thr	missense_variant	6/8	ENST00000650182.1
LRPAP1	NR_110005.2 linkuse as main transcript	n.762G>A		non_coding_transcript_exon_variant	6/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
LRPAP1	ENST00000650182.1 linkuse as main transcript	c.799G>A	p.Ala267Thr	missense_variant	6/8		NM_002337.4	P1
LRPAP1	ENST00000296325.9 linkuse as main transcript	n.762G>A		non_coding_transcript_exon_variant	6/8	1
LRPAP1	ENST00000515119.5 linkuse as main transcript	c.*576G>A		3_prime_UTR_variant, NMD_transcript_variant	6/6	2
LRPAP1	ENST00000648517.1 linkuse as main transcript	c.*291G>A		3_prime_UTR_variant, NMD_transcript_variant	7/8

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000106

AC:

AN:

198454

Hom.:

AF XY:

0.000113

AC XY:

AN XY:

106188

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000352

Gnomad ASJ exome

AF:

0.000112

Gnomad EAS exome

AF:

0.000132

Gnomad SAS exome

AF:

0.000515

Gnomad FIN exome

AF:

0.0000582

Gnomad NFE exome

AF:

0.0000348

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000448

AC:

AN:

1429750

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

707992

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000255

Gnomad4 ASJ exome

AF:

0.0000394

Gnomad4 EAS exome

AF:

0.000182

Gnomad4 SAS exome

AF:

0.000515

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000109

Gnomad4 OTH exome

AF:

0.0000169

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152360

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.0000240

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000621

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000422

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.000133

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 27, 2022

The c.799G>A (p.A267T) alteration is located in exon 6 (coding exon 6) of the LRPAP1 gene. This alteration results from a G to A substitution at nucleotide position 799, causing the alanine (A) at amino acid position 267 to be replaced by a threonine (T). 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

0.14

BayesDel_addAF

Benign

-0.072

BayesDel_noAF

Benign

-0.34

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.20

T;T

Eigen

Uncertain

0.29

Eigen_PC

Benign

0.17

FATHMM_MKL

Benign

0.61

M_CAP

Benign

0.032

MetaRNN

Benign

0.066

T;T

MetaSVM

Benign

-0.60

MutationAssessor

Uncertain

2.1

M;M

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.48

PROVEAN

Benign

-1.8

N;.

REVEL

Benign

0.19

Sift

Uncertain

0.0050

D;.

Sift4G

Uncertain

0.0080

D;.

Polyphen

1.0

D;D

Vest4

0.30

MutPred

0.42

Gain of glycosylation at T270 (P = 0.029);Gain of glycosylation at T270 (P = 0.029);

MVP

0.55

MPC

0.081

ClinPred

0.11

GERP RS

4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.56

gMVP

0.44

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