rs1201229554

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_015627.3(LDLRAP1):​c.71delG​(p.Gly24AlafsTer32) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000265 in 1,208,818 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. G24G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

LDLRAP1
NM_015627.3 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:8

Conservation

PhyloP100: 3.24

Publications

1 publications found
Variant links:
Genes affected
LDLRAP1 (HGNC:18640): (low density lipoprotein receptor adaptor protein 1) The protein encoded by this gene is a cytosolic protein which contains a phosphotyrosine binding (PTD) domain. The PTD domain has been found to interact with the cytoplasmic tail of the LDL receptor. Mutations in this gene lead to LDL receptor malfunction and cause the disorder autosomal recessive hypercholesterolaemia. [provided by RefSeq, Jul 2008]
LDLRAP1 Gene-Disease associations (from GenCC):
  • hypercholesterolemia, familial, 4
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
  • homozygous familial hypercholesterolemia
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 36 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 1-25543762-TG-T is Pathogenic according to our data. Variant chr1-25543762-TG-T is described in ClinVar as Pathogenic. ClinVar VariationId is 468290.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
LDLRAP1NM_015627.3 linkc.71delG p.Gly24AlafsTer32 frameshift_variant Exon 1 of 9 ENST00000374338.5 NP_056442.2 Q5SW96B3KR97

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
LDLRAP1ENST00000374338.5 linkc.71delG p.Gly24AlafsTer32 frameshift_variant Exon 1 of 9 1 NM_015627.3 ENSP00000363458.4 Q5SW96
LDLRAP1ENST00000718277.1 linkc.71delG p.Gly24AlafsTer32 frameshift_variant Exon 1 of 10 ENSP00000520715.1
LDLRAP1ENST00000718287.1 linkc.71delG p.Gly24AlafsTer32 frameshift_variant Exon 1 of 6 ENSP00000520725.1
LDLRAP1ENST00000718288.1 linkn.71delG non_coding_transcript_exon_variant Exon 1 of 10 ENSP00000520726.1

Frequencies

GnomAD3 genomes
AF:
0.00000663
AC:
1
AN:
150818
Hom.:
0
Cov.:
32
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:
0.0000148
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
356
AF XY:
0.00
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000293
AC:
31
AN:
1058000
Hom.:
0
Cov.:
30
AF XY:
0.0000320
AC XY:
16
AN XY:
499502
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
22018
American (AMR)
AF:
0.00
AC:
0
AN:
7630
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
13170
East Asian (EAS)
AF:
0.00
AC:
0
AN:
24564
South Asian (SAS)
AF:
0.00
AC:
0
AN:
19380
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
20692
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
2840
European-Non Finnish (NFE)
AF:
0.0000342
AC:
31
AN:
905812
Other (OTH)
AF:
0.00
AC:
0
AN:
41894
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.443
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000663
AC:
1
AN:
150818
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
73680
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41068
American (AMR)
AF:
0.00
AC:
0
AN:
15178
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3462
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5124
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4788
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10332
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
312
European-Non Finnish (NFE)
AF:
0.0000148
AC:
1
AN:
67582
Other (OTH)
AF:
0.00
AC:
0
AN:
2068
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.575
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000151

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Hypercholesterolemia, familial, 4 Pathogenic:5
Nov 09, 2023
Revvity Omics, Revvity
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

May 02, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Gly24Alafs*32) in the LDLRAP1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in LDLRAP1 are known to be pathogenic (PMID: 11326085, 12464675). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with hypercholesterolemia (PMID: 11326085). ClinVar contains an entry for this variant (Variation ID: 468290). For these reasons, this variant has been classified as Pathogenic. -

Apr 11, 2023
Genome-Nilou Lab
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Aug 13, 2021
Fulgent Genetics, Fulgent Genetics
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

May 18, 2001
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

not provided Pathogenic:2
Oct 28, 2022
GeneDx
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 11326085, 34037665) -

Feb 16, 2022
AiLife Diagnostics, AiLife Diagnostics
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Familial hypercholesterolemia Pathogenic:1
Oct 12, 2020
Natera, Inc.
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
PhyloP100
3.2
Mutation Taster
=2/198
disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1201229554; hg19: chr1-25870253; API