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NM_000527.5(LDLR):c.2177C>T (p.Thr726Ile) AND Hypercholesterolemia, familial, 1

Germline classification:
Benign (15 submissions)
Last evaluated:
May 24, 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:
RCV000030134.35

Allele description [Variation Report for NM_000527.5(LDLR):c.2177C>T (p.Thr726Ile)]

NM_000527.5(LDLR):c.2177C>T (p.Thr726Ile)

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.2177C>T (p.Thr726Ile)
Other names:
FH Paris-9; NM_000527.5(LDLR):c.2177C>T
HGVS:
  • NC_000019.10:g.11123210C>T
  • NG_009060.1:g.38830C>T
  • NM_000527.5:c.2177C>TMANE SELECT
  • NM_001195798.2:c.2177C>T
  • NM_001195799.2:c.2054C>T
  • NM_001195800.2:c.1673C>T
  • NM_001195803.2:c.1643C>T
  • NP_000518.1:p.Thr726Ile
  • NP_000518.1:p.Thr726Ile
  • NP_001182727.1:p.Thr726Ile
  • NP_001182728.1:p.Thr685Ile
  • NP_001182729.1:p.Thr558Ile
  • NP_001182732.1:p.Thr548Ile
  • LRG_274t1:c.2177C>T
  • LRG_274:g.38830C>T
  • LRG_274p1:p.Thr726Ile
  • NC_000019.9:g.11233886C>T
  • NM_000527.4:c.2177C>T
  • P01130:p.Thr726Ile
  • c.2177C>T
Protein change:
T548I
Links:
LDLR-LOVD, British Heart Foundation: LDLR_001613; UniProtKB: P01130#VAR_005413
Molecular consequence:
  • NM_000527.5:c.2177C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195798.2:c.2177C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195799.2:c.2054C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195800.2:c.1673C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001195803.2:c.1643C>T - missense variant - [Sequence Ontology: SO:0001583]
Functional consequence:
no known functional consequence - Comment(s)
Observations:
25

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
SCV000212141Institute for Integrative and Experimental Genomics, University of Luebeck
criteria provided, single submitter

(Submitter's publication)
Likely benigngermlineresearch

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

SCV000295909LDLR-LOVD, British Heart Foundation
criteria provided, single submitter

(ACGS Guidelines, 2013)
Benign
(Mar 25, 2016)
germlineliterature only

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

Citation Link,

SCV000296927Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia
criteria provided, single submitter

(DGD Variant Analysis Guidelines)
Benign
(Jul 20, 2015)
unknownclinical testing

DGD_Variant_Analysis_Guidelines.docx,

Citation Link,

SCV000323004Cardiovascular Research Group, Instituto Nacional de Saude Doutor Ricardo Jorge
criteria provided, single submitter

(ACMG Guidelines, 2015)
Benign
(Mar 1, 2016)
germlineresearch

PubMed (2)
[See all records that cite these PMIDs]

SCV000323104Cardiovascular Biomarker Research Laboratory, Mayo Clinic - RIGHT
criteria provided, single submitter

(Mayo Cardiovascular Biomarkers Research Laboratory LDLR variant interpretation criteria, 2015)
Likely benign
(Aug 31, 2016)
germlineresearch

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

Kullo Lab Assertion Criteria_01072016.pdf,

Citation Link,

SCV000503472Centre 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)
Benign
(Dec 16, 2016)
germlineclinical testing

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

SCV000540902Molecular Genetics Laboratory, Centre for Cardiovascular Surgery and Transplantation

See additional submitters

criteria provided, single submitter

(ACMG Guidelines, 2015)
Benign
(Mar 23, 2017)
unknownclinical testing

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

SCV000588642Laboratory of Genetics and Molecular Cardiology, University of São Paulo - HipercolBrasil
criteria provided, single submitter

(ACMG Guidelines, 2015)
Benign
(Mar 1, 2016)
germlineresearch

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

SCV000606613Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum
no assertion criteria provided
Benigngermlineresearch

SCV000607682Fundacion Hipercolesterolemia Familiar - SAFEHEART
criteria provided, single submitter

(ACMG Guidelines, 2015)
Benign
(Mar 1, 2016)
germlineresearch

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

SCV000733831Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen - VKGL Data-share Consensus
no assertion criteria provided
Benigngermlineclinical testing

SCV000748059Iberoamerican FH Network
criteria provided, single submitter

(ACMG Guidelines, 2015)
Benign
(Mar 1, 2016)
germlineresearch

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

SCV000782936Robarts Research Institute, Western University
criteria provided, single submitter

(ACMG Guidelines, 2015)
Benign
(Jan 2, 2018)
germlineclinical testing

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

SCV001286052Illumina Laboratory Services, Illumina
criteria provided, single submitter

(ICSL Variant Classification Criteria 13 December 2019)
Benign
(Apr 10, 2018)
germlineclinical testing

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

Citation Link,

SCV002817169ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel
reviewed by expert panel

(ClinGen FH ACMG Specifications v1-2)
Benign
(May 24, 2022)
germlinecuration

Citation Link

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineno66not provided6not providedresearch, literature only
not providedunknownunknownnot providednot providednot providednot providednot providedclinical testing
not providedgermlineyes21not providednot provided2604not providedclinical testing, research, literature only
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing, research, curation
Caucasianunknownyes2525not provided3976not providedclinical testing
Whitegermlinenonot providednot providednot provided1013not providedresearch

Citations

PubMed

Systematic analysis of variants related to familial hypercholesterolemia in families with premature myocardial infarction.

Brænne I, Kleinecke M, Reiz B, Graf E, Strom T, Wieland T, Fischer M, Kessler T, Hengstenberg C, Meitinger T, Erdmann J, Schunkert H.

Eur J Hum Genet. 2016 Feb;24(2):191-7. doi: 10.1038/ejhg.2015.100. Epub 2015 Jun 3.

PubMed [citation]
PMID:
26036859
PMCID:
PMC4717192

Mutation analysis in 46 German families with familial hypercholesterolemia: identification of 8 new mutations. Mutations in brief no. 226. Online.

Ebhardt M, Schmidt H, Doerk T, Tietge U, Haas R, Manns MP, Schmidtke J, Stuhrmann M.

Hum Mutat. 1999;13(3):257.

PubMed [citation]
PMID:
10090484
See all PubMed Citations (13)

Details of each submission

From Institute for Integrative and Experimental Genomics, University of Luebeck, SCV000212141.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlinenonot providednot providednot providednot providednot provided6not provided

From LDLR-LOVD, British Heart Foundation, SCV000295909.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedliterature only PubMed (10)
2not provided1not providednot providedliterature only PubMed (10)
3not provided1not providednot providedliterature only PubMed (10)
4not provided1not providednot providedliterature only PubMed (10)
5not provided1not providednot providedliterature only PubMed (10)
6not provided1not providednot providedliterature only PubMed (10)
7not provided1not providednot providedliterature only PubMed (10)
8not provided1not providednot providedliterature only PubMed (10)
9not provided1not providednot providedliterature only PubMed (10)
10not provided1not providednot providedliterature only PubMed (10)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineno1not providednot provided1not providednot providednot provided
2germlineno1not providednot provided1not providednot providednot provided
3germlineno1not providednot provided1not providednot providednot provided
4germlineno1not providednot provided1not providednot providednot provided
5germlineno1not providednot provided1not providednot providednot provided
6germlineno1not providednot provided1not providednot providednot provided
7germlineyes1not providednot provided1not providednot providednot provided
8germlineyes1not providednot provided1not providednot providednot provided
9germlineyes1not providednot provided1not providednot providednot provided
10germlineyes1not providednot provided1not providednot providednot provided

From Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia, SCV000296927.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknownnot providednot providednot providednot providednot providednot providednot provided

From Cardiovascular Research Group, Instituto Nacional de Saude Doutor Ricardo Jorge, SCV000323004.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (2)
2not providednot providednot providednot providedresearch PubMed (2)

Description

%MAF (ExAC):0.6261

"Heterologous cells (CHO), FACS assays"

Description

1Hmz + 1Htz/100 normolipidemic individuals; 0/200 non-FH alleles

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided
2germlineyesnot providednot providednot providednot providednot providednot providednot provided

From Cardiovascular Biomarker Research Laboratory, Mayo Clinic - RIGHT, SCV000323104.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1Whitenot providednot providednot providedresearch PubMed (1)

Description

does not meet required criteria. "Little/No effect" on the LDL receptor activity based on experimental validation.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineno1013not providedassert pathogenicitynot providednot 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, SCV000503472.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided17not providednot providedclinical testing PubMed (1)

Description

subjects mutated among 2600 FH index cases screened = 17/Software predictions: Benign

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyes2600not providednot provided17not providednot providednot provided

From Molecular Genetics Laboratory, Centre for Cardiovascular Surgery and Transplantation, SCV000540902.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1Caucasian25not providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownyes3976Whole bloodnot provided25not provided25not provided

From Laboratory of Genetics and Molecular Cardiology, University of São Paulo - HipercolBrasil, SCV000588642.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (1)
2not providednot providednot providednot providedresearch PubMed (1)

Description

%MAF(ExAC):0.6261

Assay description:Heterologous cells (CHO), FACS assays

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided
2germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum, SCV000606613.1

#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, SCV000607682.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (1)
2not providednot providednot providednot providedresearch PubMed (1)

Description

%MAF(ExAC):0.6261

Heterologous cells (CHO), FACS assays

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided
2germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen - VKGL Data-share Consensus, SCV000733831.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From Iberoamerican FH Network, SCV000748059.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (1)
2not providednot providednot providednot providedresearch PubMed (1)

Description

%MAF(ExAC):0.6261

Assay Description:Heterologous cells (CHO), FACS assays

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided
2germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Robarts Research Institute, Western University, SCV000782936.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From Illumina Laboratory Services, Illumina, SCV001286052.1

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

Description

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign.

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

From ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel, SCV002817169.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedcurationnot provided

Description

The NM_000527.5(LDLR):c.2177C>T (p.Thr726Ile) variant is classified as Benign for Familial Hypercholesterolemia by applying evidence codes BA1 and BP4 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: BA1 - FAF = 0.008138 (0.8138%) in European (non-Finnish) exomes (gnomAD v2.1.1), so BA1 is Met. BP4 - REVEL = 0.454, it is below 0.50, so splicing evaluation is required. Functional data on splicing not available. A) variant not on limits B) does not create AG C) variant is exonic and there 1 an AG nearby MES scores: variant cryptic = -1.90, wt cryptic = -1.77, canonical acceptor = 8.76. Ratio variant cryptic/wt cryptic: -1.90/-1.77 = 1.07 --- it is not above 1.1 Ratio variant cryptic/canonical acceptor: -1.90/8.76 --- it is not above 0.9 --- BP4 is Met.

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

Last Updated: Jun 23, 2024