rs730882111

Variant names:

• chr19-11120200-A-G
• rs730882111
• NM_000527.5:c.1954A>G

Your query was ambiguous. Multiple possible variants found:

• chr19-11120200-A-G
• chr19-11120200-A-T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

This summary comes from the ClinGen Evidence Repository: The NM_000527.5(LDLR):c.1954A>G (p.Met652Val) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying evidence codes PM2 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 follow:PM2_Met : Allele frequency is 0.00002 in European (Non-Finnish) subpopulation (>129178 alleles tested) in GnomAD (gnomAD v2.1.1). LINK:https://erepo.genome.network/evrepo/ui/classification/CA023615/MONDO:0007750/013

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: LDLR NM_000527.5 missense
• Clinical Significance: Uncertain significance reviewed by expert panel P:1 U:2 B:1 O:1
• Conservation: PhyloP100: 3.24
• Publications: 1 publications found

Genes affected

LDLR (HGNC:6547): (low density lipoprotein receptor) The low density lipoprotein receptor (LDLR) gene family consists of cell surface proteins involved in receptor-mediated endocytosis of specific ligands. The encoded protein is normally bound at the cell membrane, where it binds low density lipoprotein/cholesterol and is taken into the cell. Lysosomes release the cholesterol, which is made available for repression of microsomal enzyme 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase, the rate-limiting step in cholesterol synthesis. At the same time, a reciprocal stimulation of cholesterol ester synthesis takes place. Mutations in this gene cause the autosomal dominant disorder, familial hypercholesterolemia. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2022]

LDLR Gene-Disease associations (from GenCC):

• hypercholesterolemia, familial, 1

  Inheritance: AD, SD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen
• homozygous familial hypercholesterolemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LDLR	NM_000527.5	c.1954A>G	p.Met652Val	missense_variant	Exon 13 of 18	ENST00000558518.6	NP_000518.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LDLR	ENST00000558518.6	c.1954A>G	p.Met652Val	missense_variant	Exon 13 of 18	1	NM_000527.5	ENSP00000454071.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251460 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461836 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 727218

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111960

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000240 Hom.: 0

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1 Uncertain:2 Benign:1 Other:1

Revision: reviewed by expert panel

Submissions by phenotype

Hypercholesterolemia, familial, 1 Pathogenic:1 Uncertain:1 Benign:1

-

Laboratorium voor Moleculaire Diagnostiek Experimentele Vasculaire Geneeskunde, Academisch Medisch Centrum

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: research

- -

Mar 25, 2016

LDLR-LOVD, British Heart Foundation

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: literature only

- -

Dec 23, 2022

ClinGen Familial Hypercholesterolemia Variant Curation Expert Panel

Significance: Uncertain significance

Review Status: reviewed by expert panel

Collection Method: curation

The NM_000527.5(LDLR):c.1954A>G (p.Met652Val) variant is classified as Uncertain significance - insufficient evidence for Familial Hypercholesterolemia by applying evidence codes PM2 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 follow: PM2_Met : Allele frequency is 0.00002 in European (Non-Finnish) subpopulation (>129178 alleles tested) in GnomAD (gnomAD v2.1.1). -

not specified Uncertain:1

Aug 14, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: LDLR c.1954A>G (p.Met652Val) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 in 251460 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.1954A>G has been reported in the literature in at least two individuals affected with high cholesterol (Balder_2018, Leren_2021). However, these report(s) do not provide unequivocal conclusions about association of the variant with Familial Hypercholesterolemia. c.1954A>G has also been identified in at least two control individuals who did not have a history of myocardial infarction (Do_2015, Thormaehlen_2018), however cholesterol levels for these individuals were not provided. At least one functional study investigating protein overexpression and complementation showed no damaging effect of this variant (Thormaehlen_2018). The following publications have been ascertained in the context of this evaluation (PMID: 29459468, 25487149, 33740630, 25647241). Two submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. One submitter classified the variant as likely benign, and one submitter classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

not provided Other:1

-

Dept. of Genetics and Pharmacogenomics, Merck Research Labs

Significance: not provided

Review Status: no classification provided

Collection Method: in vitro

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.087
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.13
CADD	Benign	17
DANN	Benign	0.64
DEOGEN2	Uncertain	0.48	T;.;.;.;.;.
Eigen	Benign	-0.81
Eigen_PC	Benign	-0.68
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.86	D;D;D;D;D;D
M_CAP	Pathogenic	0.39	D
MetaRNN	Uncertain	0.68	D;D;D;D;D;D
MetaSVM	Benign	-0.39	T
MutationAssessor	Benign	-0.95	N;.;.;.;.;N
PhyloP100		3.2
PrimateAI	Benign	0.34	T
PROVEAN	Benign	1.1	N;N;N;N;N;N
REVEL	Uncertain	0.52
Sift	Benign	0.046	D;T;T;D;D;D
Sift4G	Benign	0.11	T;T;D;T;T;T
Polyphen		0.0010	B;.;.;.;.;.
Vest4		0.40
MutPred		0.80		Gain of catalytic residue at M652 (P = 0.0467);Gain of catalytic residue at M652 (P = 0.0467);.;.;.;Gain of catalytic residue at M652 (P = 0.0467);
MVP		1.0
MPC		0.22
ClinPred		0.099	T
GERP RS		3.2
Varity_R		0.18
gMVP		0.87
Mutation Taster		=70/30	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs730882111; hg19: chr19-11230876;