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NC_000019.10:g.11089393C>T AND Hypercholesterolemia, familial, 1

Germline classification:
Uncertain significance (3 submissions)
Last evaluated:
Mar 20, 2023
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:
RCV000237296.12

Allele description [Variation Report for NC_000019.10:g.11089393C>T]

NC_000019.10:g.11089393C>T

Genes:
LDLR:low density lipoprotein receptor [Gene - OMIM - HGNC]
LDLR-AS1:LDLR antisense RNA 1 [Gene - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
19p13.2
Genomic location:
Preferred name:
NC_000019.10:g.11089393C>T
HGVS:
  • NC_000019.10:g.11089393C>T
  • NG_009060.1:g.5013C>T
  • NM_000527.4:c.-156C>T
  • NM_001195798.1:c.-156C>T
  • NM_001195799.1:c.-156C>T
  • NM_001195800.1:c.-156C>T
  • NM_001195803.1:c.-156C>T
  • LRG_274t1:c.-156C>T
  • LRG_274:g.5013C>T
  • NC_000019.9:g.11200069C>T
  • NR_163945.1:n.267G>A
  • c.-156C>T
Links:
LDLR-LOVD, British Heart Foundation: LDLR_001112; dbSNP: rs879254364
NCBI 1000 Genomes Browser:
rs879254364
Molecular consequence:
  • NR_163945.1:n.267G>A - non-coding transcript variant - [Sequence Ontology: SO:0001619]
Observations:
1

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
SCV000294377LDLR-LOVD, British Heart Foundation
criteria provided, single submitter

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

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

Citation Link,

SCV004022391ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel
reviewed by expert panel

(ClinGen FH ACMG Specifications v1-2)
Uncertain significance
(Mar 20, 2023)
germlinecuration

Citation Link,

SCV004840242All of Us Research Program, National Institutes of Health
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain Significance
(Nov 20, 2023)
germlineclinical testing

PubMed (8)
[See all records that cite these PMIDs]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknown1not providednot provided108544not providedclinical testing, curation
not providedgermlineyes1not providednot provided1not providedliterature only

Citations

PubMed

Molecular characterization of familial hypercholesterolemia in German and Greek patients.

Dedoussis GV, Genschel J, Bochow B, Pitsavos C, Skoumas J, Prassa M, Lkhagvasuren S, Toutouzas P, Vogt A, Kassner U, Thomas HP, Schmidt H.

Hum Mutat. 2004 Mar;23(3):285-6.

PubMed [citation]
PMID:
14974088

Molecular basis of autosomal dominant hypercholesterolemia: assessment in a large cohort of hypercholesterolemic children.

van der Graaf A, Avis HJ, Kusters DM, Vissers MN, Hutten BA, Defesche JC, Huijgen R, Fouchier SW, Wijburg FA, Kastelein JJ, Wiegman A.

Circulation. 2011 Mar 22;123(11):1167-73. doi: 10.1161/CIRCULATIONAHA.110.979450. Epub 2011 Mar 7.

PubMed [citation]
PMID:
21382890
See all PubMed Citations (8)

Details of each submission

From LDLR-LOVD, British Heart Foundation, SCV000294377.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedliterature only PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyes1not providednot provided1not providednot providednot provided

From ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel, SCV004022391.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedcurationnot provided

Description

The NM_000527.4(LDLR):c.-156C>T variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying evidence codes (PM2, PS3_supporting, PS4_supporting, PP4) 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 - This variant is absent from gnomAD (gnomAD v2.1.1). PS3_supporting - Level 3 assay: PMID 31395865: Heterologous cells, luciferase assays - result - luciferase activity 15-17% of wild-type (repressing variant). ---- functional study is consistent with damaging effect. PS4_supporting - Variant meets PM2 and is identified in 2 index cases with definite FH: 1 index case with CT=439, LDL=377, severe CAD and Achilles tendon xanthomata from Germany (PMID: 14974088), and 1 index case with LDL >13 mmol/L, pCHD and tendon xanthomas from Italy (PMID: 31947532). PP4 - Variant meets PM2 and is identified in 2 index cases with definite FH (see PS4 for details), after alternative causes for high cholesterol were excluded.

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

From All of Us Research Program, National Institutes of Health, SCV004840242.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedclinical testing PubMed (8)

Description

This variant is located in the SREBP binding site in the promoter region of the LDLR gene. An experimental functional study measuring luciferase activity in transfected HepG2 cells has shown that this variant causes a significant decrease in LDLR gene expression (PMID: 31395865). This variant has been reported in four heterozygous individuals affected with familial hypercholesterolemia (PMID: 14974088, 21382890, 28104544, 33740630). This variant has also been observed in homozygous state in one individual affected with severe homozygous familial hypercholesterolemia (PMID: 31947532, 32977124). It has been shown that this variant segregates with disease in two affected individuals in one family (PMID: 14974088). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknown108544not providednot provided1not providednot providednot provided

Last Updated: Oct 26, 2024