NM_000527.5(LDLR):c.2096C>T (p.Pro699Leu) AND Hypercholesterolemia, familial, 1

Germline classification:: Uncertain significance (12 submissions)
Last evaluated:: Jun 18, 2021
Review status:: 3 stars out of maximum of 4 stars
reviewed by expert panel

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000237906.21

Allele description [Variation Report for NM_000527.5(LDLR):c.2096C>T (p.Pro699Leu)]

NM_000527.5(LDLR):c.2096C>T (p.Pro699Leu)

Gene:

LDLR:low density lipoprotein receptor [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

19p13.2

Genomic location:

Preferred name:

NM_000527.5(LDLR):c.2096C>T (p.Pro699Leu)

Other names:

NP_000518.1:p.P699L; NM_000527.5(LDLR):c.2096C>T

HGVS:

NC_000019.10:g.11120478C>T
NG_009060.1:g.36098C>T
NM_000527.5:c.2096C>TMANE SELECT
NM_001195798.2:c.2096C>T
NM_001195799.2:c.1973C>T
NM_001195800.2:c.1592C>T
NM_001195803.2:c.1606+245C>T
NP_000518.1:p.Pro699Leu
NP_000518.1:p.Pro699Leu
NP_001182727.1:p.Pro699Leu
NP_001182728.1:p.Pro658Leu
NP_001182729.1:p.Pro531Leu
LRG_274t1:c.2096C>T
LRG_274:g.36098C>T
LRG_274p1:p.Pro699Leu
NC_000019.9:g.11231154C>T
NM_000527.4:c.2096C>T
P01130:p.Pro699Leu
c.2096C>T

Protein change:

P531L

Links:

LDLR-LOVD, British Heart Foundation: LDLR_001600; UniProtKB: P01130#VAR_013955

Molecular consequence:

NM_001195803.2:c.1606+245C>T - intron variant - [Sequence Ontology: SO:0001627]
NM_000527.5:c.2096C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001195798.2:c.2096C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001195799.2:c.1973C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001195800.2:c.1592C>T - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Name:: Hypercholesterolemia, familial, 1
Synonyms:: LDL RECEPTOR DISORDER; Hyperlipoproteinemia Type IIa; HYPER-LOW-DENSITY-LIPOPROTEINEMIA; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0007750; MedGen: C0745103; Orphanet: 391665; OMIM: 143890

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Homo sapiens transmembrane protein 134, mRNA (cDNA clone IMAGE:6514633), with ap...
Homo sapiens transmembrane protein 134, mRNA (cDNA clone IMAGE:6514633), with apparent retained intron
gi|30704875|gb|BC051854.1|

Nucleotide
Synthetic construct Homo sapiens clone IMAGE:100015596, MGC:183116 fidgetin (FIG...
Synthetic construct Homo sapiens clone IMAGE:100015596, MGC:183116 fidgetin (FIGN) mRNA, encodes complete protein
gi|151556525|gb|BC148649.1|

Nucleotide

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000295871	LDLR-LOVD, British Heart Foundation	criteria provided, single submitter (ACGS Guidelines, 2013)	Likely pathogenic (Mar 25, 2016)	germline	literature only	PubMed (8) [See all records that cite these PMIDs] 10882754, 11810272, 11851376, 7489239, 21310417, 19318025, 23375686, 26892515 Citation Link,
SCV000484739	Robarts Research Institute, Western University	criteria provided, single submitter (Wang et al. (Arterioscler Thromb Vasc Biol. 2016))	Likely pathogenic	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000503463	Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies, APHP, GH Hôpitaux Universitaires Pitié-Salpêtrière / Charles-Foix	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic (Dec 16, 2016)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000540843	Molecular Genetics Laboratory, Centre for Cardiovascular Surgery and Transplantation See additional submitters Centre of Molecular Biology and Gene Therapy, University Hospital Brno	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic (Nov 5, 2016)	unknown	clinical testing	PubMed (2) [See all records that cite these PMIDs] 25741868, 22698793
SCV000583929	U4M - Lille University & CHRU Lille, Université de Lille - CHRU de Lille	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Mar 30, 2017)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000588634	Laboratory of Genetics and Molecular Cardiology, University of São Paulo - HipercolBrasil	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Mar 1, 2016)	germline	research	PubMed (1) [See all records that cite this PMID]
SCV000606597	Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum	no assertion criteria provided	Pathogenic	germline	research
SCV000607675	Fundacion Hipercolesterolemia Familiar - SAFEHEART	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Mar 1, 2016)	germline	research	PubMed (1) [See all records that cite this PMID]
SCV001424793	Division of Medical Genetics, University of Washington - CSER_CHARM	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Sep 10, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001754790	Human Genome Sequencing Center Clinical Lab, Baylor College of Medicine	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic (Oct 31, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001960938	ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel	reviewed by expert panel (ClinGen FH ACMG Specifications v1-1)	Uncertain significance (Jun 18, 2021)	germline	curation	Citation Link,
SCV003816526	Revvity Omics, Revvity	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (May 27, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

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Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	12	1	not provided	2608	not provided	clinical testing, literature only
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing, research, curation
Caucasian	unknown	yes	1	1	not provided	3964	not provided	clinical testing

Citations

PubMed

Predominance of a 6 bp deletion in exon 2 of the LDL receptor gene in Africans with familial hypercholesterolaemia.

Thiart R, Scholtz CL, Vergotine J, Hoogendijk CF, de Villiers JN, Nissen H, Brusgaard K, Gaffney D, Hoffs MS, Vermaak WJ, Kotze MJ.

J Med Genet. 2000 Jul;37(7):514-9.

PubMed [citation]

PMID:: 10882754
PMCID:: PMC1734636

The molecular basis of familial hypercholesterolemia in The Netherlands.

Fouchier SW, Defesche JC, Umans-Eckenhausen MW, Kastelein JP.

Hum Genet. 2001 Dec;109(6):602-15. Epub 2001 Nov 9.

PubMed [citation]

PMID:: 11810272

See all PubMed Citations (11)

Details of each submission

From LDLR-LOVD, British Heart Foundation, SCV000295871.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	literature only	PubMed (8)
2	not provided	1	not provided	not provided	literature only	PubMed (8)
3	not provided	1	not provided	not provided	literature only	PubMed (8)
4	not provided	1	not provided	not provided	literature only	PubMed (8)
5	not provided	1	not provided	not provided	literature only	PubMed (8)
6	not provided	1	not provided	not provided	literature only	PubMed (8)
7	not provided	1	not provided	not provided	literature only	PubMed (8)
8	not provided	1	not provided	not provided	literature only	PubMed (8)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
2	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
3	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
4	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
5	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
6	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
7	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided
8	germline	yes	1	not provided	not provided		1	not provided	not provided	not provided

From Robarts Research Institute, Western University, SCV000484739.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	2	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		2	not provided	not provided	not provided

From Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies, APHP, GH Hôpitaux Universitaires Pitié-Salpêtrière / Charles-Foix, SCV000503463.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	clinical testing	PubMed (1)

Description

subject mutated among 2600 FH index cases screened = 1 , family members = 3 with co-segregation / previously described in association with FH/software prediction damaging

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	2600	not provided	not provided		1	not provided	not provided	not provided

From Molecular Genetics Laboratory, Centre for Cardiovascular Surgery and Transplantation, SCV000540843.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	Caucasian	1	not provided	not provided	clinical testing	PubMed (2)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	yes	3964	Whole blood	not provided		1	not provided	1	not provided

From U4M - Lille University & CHRU Lille, Université de Lille - CHRU de Lille, SCV000583929.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	clinical testing	PubMed (1)

Description

Dutch Lipid Clinic Scoring : Probable FH

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		1	not provided	1	not provided

From Laboratory of Genetics and Molecular Cardiology, University of São Paulo - HipercolBrasil, SCV000588634.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	PubMed (1)

Description

%MAF(ExAC):0.001655

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum, SCV000606597.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Fundacion Hipercolesterolemia Familiar - SAFEHEART, SCV000607675.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	PubMed (1)

Description

%MAF(ExAC):0.001655

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Division of Medical Genetics, University of Washington - CSER_CHARM, SCV001424793.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This variant has an overall allele frequency of 0.00004 in the Broad Institute gnomAD Browser (https://gnomad.broadinstitute.org/). In silico analyses indicate this is an evolutionarily conserved residue. This variant has been reported in the literature in multiple individuals and families with familial hypercholesterolemia (Schuster 1995, Thiart 2000, Fouchier 2001, Van Gaal 2001, Huijgen 2011, Tichy 2012, Bertolini 2013, Janness 2015, Sharifi 2016, Wang 2016). Thus, this variant is interpreted as pathogenic.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Human Genome Sequencing Center Clinical Lab, Baylor College of Medicine, SCV001754790.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

The c.2096C>T (p.Pro699Leu) variant in exon 14 of LDLR gene results in an amino acid change at residue 699 from a proline to a leucine. This variant has been reported in multiple unrelated individuals and families with familial hypercholesterolemia (PMID: 21642693, 7489239, 21310417, 26892515, 25461735, 10882754). Multiple lines of in silico algorithms have predicted this p.Pro699Leu change to be deleterious. Functional studies (PMID: 20089850) demonstrated that the mutant protein misfolded with a loss of normal protein tracking pattern. Therefore, this variant c.2096C>T (p.Pro699Leu) of LDLR is classified as likely pathogenic.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel, SCV001960938.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	curation	not provided

Description

NM_000527.5(LDLR):c.2096C>T (p.Pro699Leu) variant is classified as Uncertain significance for Familial Hypercholesterolemia by applying evidence codes (BS4, PP1_Strong and PP3) as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1101/2021.03.17.21252755). The supporting evidence is as follows: BS4 - Variant does not segregate with FH phenotype in 11 informative meioses in 6 families (Laboratory of Genetics and Molecular Cardiology). PP1_strong - Variant segregates with FH phenotype in 58 informative meioses in 9 families from Laboratory of Genetics and Molecular Cardiology. PP3 - REVEL: 0,92.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Revvity Omics, Revvity, SCV003816526.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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