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NM_000527.5(LDLR):c.1720C>T (p.Arg574Cys) AND Hypercholesterolemia, familial, 1

Germline classification:
Uncertain significance (8 submissions)
Last evaluated:
Mar 7, 2022
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:
RCV000238063.16

Allele description [Variation Report for NM_000527.5(LDLR):c.1720C>T (p.Arg574Cys)]

NM_000527.5(LDLR):c.1720C>T (p.Arg574Cys)

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.1720C>T (p.Arg574Cys)
Other names:
NM_000527.5(LDLR):c.1720C>T
HGVS:
  • NC_000019.10:g.11116873C>T
  • NG_009060.1:g.32493C>T
  • NM_000527.5:c.1720C>TMANE SELECT
  • NM_001195798.2:c.1720C>T
  • NM_001195799.2:c.1597C>T
  • NM_001195800.2:c.1216C>T
  • NM_001195803.2:c.1339C>T
  • NP_000518.1:p.Arg574Cys
  • NP_000518.1:p.Arg574Cys
  • NP_001182727.1:p.Arg574Cys
  • NP_001182728.1:p.Arg533Cys
  • NP_001182729.1:p.Arg406Cys
  • NP_001182732.1:p.Arg447Cys
  • LRG_274t1:c.1720C>T
  • LRG_274:g.32493C>T
  • NC_000019.9:g.11227549C>T
  • NM_000527.4(LDLR):c.1720C>T
  • NM_000527.4:c.1720C>T
  • P01130:p.Arg574Cys
  • c.1720C>T
  • p.(Arg574Cys)
Protein change:
R406C
Links:
LDLR-LOVD, British Heart Foundation: LDLR_000232; UniProtKB: P01130#VAR_072851; dbSNP: rs185098634
NCBI 1000 Genomes Browser:
rs185098634
Molecular consequence:
  • NM_000527.5:c.1720C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195798.2:c.1720C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195799.2:c.1597C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195800.2:c.1216C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195803.2:c.1339C>T - missense variant - [Sequence Ontology: SO:0001583]
Functional consequence:
no known functional consequence - Comment(s)
Observations:
9

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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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000295611LDLR-LOVD, British Heart Foundation
criteria provided, single submitter

(ACGS Guidelines, 2013)
Likely pathogenic
(Mar 25, 2016)
germlineliterature only

PubMed (5)
[See all records that cite these PMIDs]

Citation Link,

SCV000503397Centre 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)
Uncertain significance
(Dec 16, 2016)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV000606498Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum
no assertion criteria provided
Pathogenicgermlineresearch

SCV000607630Fundacion Hipercolesterolemia Familiar - SAFEHEART
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Mar 1, 2016)
germlineresearch

PubMed (1)
[See all records that cite this PMID]

SCV001423052Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Jan 22, 2020)
germlinecuration

PubMed (10)
[See all records that cite these PMIDs]

Citation Link,

SCV001653648Laboratory of molecular diagnosis of dyslipidemias, Università egli studi di Napoli Federico II
criteria provided, single submitter

(ACMG Guidelines, 2015)
Likely pathogenic
(May 24, 2021)
germlineclinical testing

PubMed (9)
[See all records that cite these PMIDs]

SCV002506355ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel
reviewed by expert panel

(ClinGen FH ACMG Specifications v1-2)
Uncertain significance
(Mar 7, 2022)
germlinecuration

Citation Link,

SCV004822491All of Us Research Program, National Institutes of Health
criteria provided, single submitter

(ACMG Guidelines, 2015)
Likely Pathogenic
(Jul 29, 2024)
germlineclinical testing

PubMed (10)
[See all records that cite these PMIDs]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyes6not providednot provided2605not providedclinical testing, literature only
not providedgermlineunknown2not providednot provided143475not providedclinical testing, research, curation
Caucasiangermlineyes1not providednot providednot providednot providedclinical testing

Citations

PubMed

Molecular characterization of Polish patients with familial hypercholesterolemia: novel and recurrent LDLR mutations.

Chmara M, Wasag B, Zuk M, Kubalska J, Wegrzyn A, Bednarska-Makaruk M, Pronicka E, Wehr H, Defesche JC, Rynkiewicz A, Limon J.

J Appl Genet. 2010;51(1):95-106. doi: 10.1007/BF03195716.

PubMed [citation]
PMID:
20145306

Short-term effect of rosuvastatin treatment on arterial stiffness in individuals with newly-diagnosed heterozygous familial hypercholesterolemia.

Canepa M, Artom N, Ameri P, Carbone F, Montecucco F, Ghigliotti G, Brunelli C, Dallegri F, Pende A, Pisciotta L.

Int J Cardiol. 2018 Mar 15;255:215-220. doi: 10.1016/j.ijcard.2017.12.051. Epub 2017 Dec 27. No abstract available.

PubMed [citation]
PMID:
29290422
See all PubMed Citations (19)

Details of each submission

From LDLR-LOVD, British Heart Foundation, SCV000295611.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedliterature only PubMed (5)
2not provided1not providednot providedliterature only PubMed (5)
3not provided1not providednot providedliterature only PubMed (5)
4not provided1not providednot providedliterature only PubMed (5)
5not provided1not providednot providedliterature only PubMed (5)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyes1not providednot provided1not providednot providednot provided
2germlineyes1not providednot provided1not providednot providednot provided
3germlineyes1not providednot provided1not providednot providednot provided
4germlineyes1not providednot provided1not providednot providednot provided
5germlineyes1not providednot provided1not providednot providednot 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, SCV000503397.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedclinical testing PubMed (1)

Description

subject mutated among 2600 FH index cases screened = 1, family member=1 /FH-Germany/software prediction damaging

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyes2600not providednot provided1not providednot providednot provided

From Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum, SCV000606498.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearchnot provided
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Fundacion Hipercolesterolemia Familiar - SAFEHEART, SCV000607630.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (1)

Description

%MAF(ExAC):0.002471

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard, SCV001423052.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedcuration PubMed (10)

Description

The p.Arg574Cys variant in LDLR has been reported in 14 individuals with familial hypercholesterolemia (PMID: 29290422, 25647241, 22698793, 20145306, 25487149, 23375686, 11462246, 26892515, 19446849), and has been identified in 0.006% (8/129194) European non-Finnish chromosomes. 0.004% (1/25116) European Finnish chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs185098634). Please note that for diseases with clinical variability, or reduced penetrance, pathogenic variants may be present at a low frequency in the general population. This variant has also been reported in ClinVar as a VUS, likely pathogenic, and pathogenic(Variation ID#: 183123). Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, while there is some suspicion for a pathogenic role, the clinical significance of this variant is uncertain. ACMG/AMP Criteria applied: PS4_moderate, PM2_supporting, PP3 (Richards 2015).

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Laboratory of molecular diagnosis of dyslipidemias, Università egli studi di Napoli Federico II, SCV001653648.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1Caucasian1not providednot providedclinical testing PubMed (9)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot provided1not providednot providednot provided

From ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel, SCV002506355.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedcurationnot provided

Description

NM_000527.5(LDLR):c.1720C>T (p.Arg574Cys) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying evidence codes (PM2, PP3, PP4, PS4_supporting and BS3_supporting) as defined by the ClinGen Familial Hypercholesterolemia Expert Panel LDLR-specific variant curation guidelines (https://doi.org/10.1016/j.gim.2021.09.012). The supporting evidence is as follows: PM2 - PopMax MAF = 0.0001384 (0.01384%) in Other populations exomes+genomes (gnomAD v2.1.1). PP3 - REVEL = 0.967. PP4 - Variant meets PM2. Variant identified in 5 FH cases (1 case with Simon-Broome possible from Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies (APHP.Sorbonne Université, Hôpital de la Pitié-Salpêtrière); 1 case with Dutch Lipid Clinic Network score greater than or equal to 6 published in PMID: 11462246; 1 case with Dutch Lipid Clinic Network score greater than or equal to 6 published in PMID: 29290422; 1 case with Dutch Lipid Clinic Network score greater than or equal to 6 from Research Lab of Molecular Genetics of Lipid Metabolism - Prof. M.Arca; 1 case with Simon-Broome register possible/definite published in PMID: 26892515. PS4_supporting - Variant meets PM2. Variant identified in 5 unrelated index cases (1 case with Simon-Broome from Centre de Génétique Moléculaire et Chromosomique, Unité de génétique de l'Obésité et des Dyslipidémies (APHP.Sorbonne Université, Hôpital de la Pitié-Salpêtrière); 1 case with Dutch Lipid Clinic Network score greater than or equal to 6 published in PMID: 11462246; 1 case with Dutch Lipid Clinic Network score greater than or equal to 6 published in PMID: 29290422; 1 case with Dutch Lipid Clinic Network score greater than or equal to 6 from Research Lab of Molecular Genetics of Lipid Metabolism - Prof. M.Arca; 1 case with Simon-Broome register criteria published in PMID: 26892515. BS3_supporting - PMID: 25647241: Level 3 assay - study on HeLa-Kyoto cells, LDLR-GFP construct, WB + CLSM assays, whole cycle is above 100% of wild-type activity. - functional study is consistent with no damaging effect.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From All of Us Research Program, National Institutes of Health, SCV004822491.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided2not providednot providedclinical testing PubMed (10)

Description

This missense variant replaces arginine with cysteine at codon 574 of the LDLR protein. This variant is also known as p.Arg553Cys in the mature protein. This variant alters a conserved arginine residue in the LDLR type B repeat 5 of the LDLR protein (a.a. 572-615), where pathogenic missense variants are found enriched (ClinVar-LDLR). Computational prediction suggests that this variant may have a deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). A high-throughput experimental study has shown that this variant may not disrupt LDLR function (PMID: 25647241). This variant has been reported in over 10 individuals affected with familial hypercholesterolemia (PMID: 11462246, 15823288, 19318025, 19446849, 26892515, 27050191, 30293936, 34297352). This variant has been stated to segregate with disease in a German family, although detailed data from the family study has not been provided (PMID: 11462246). This variant has been identified in 10/282878 chromosomes in the general population by the Genome Aggregation Database (gnomAD). A different variant affecting the same codon, p.Arg574His, is considered to be disease-causing (ClinVar variation ID: 251996), suggesting that arginine at this position is important for LDLR protein function. Based on the available evidence, this variant is classified as Likely Pathogenic.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknown143475not providednot provided2not providednot providednot provided

Last Updated: Mar 22, 2025