rs879254541
Variant summary
Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1PM2PM5PP3_StrongPP5
The NM_000527.5(LDLR):c.479G>A(p.Cys160Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C160F) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000527.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 11 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LDLR | NM_000527.5 | c.479G>A | p.Cys160Tyr | missense_variant | 4/18 | ENST00000558518.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LDLR | ENST00000558518.6 | c.479G>A | p.Cys160Tyr | missense_variant | 4/18 | 1 | NM_000527.5 | P3 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD4 exome Cov.: 33
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
Hypercholesterolemia, familial, 1 Pathogenic:2Uncertain:1
Likely pathogenic, criteria provided, single submitter | research | Laboratory of Genetics and Molecular Cardiology, University of São Paulo | Mar 01, 2016 | - - |
Likely pathogenic, criteria provided, single submitter | literature only | LDLR-LOVD, British Heart Foundation | Mar 25, 2016 | - - |
Uncertain significance, criteria provided, single submitter | curation | SIB Swiss Institute of Bioinformatics | May 31, 2018 | This variant is interpreted as a Uncertain Significance - Insufficient Evidence, for Hypercholesterolemia, familial, in Autosomal Dominant manner. The following ACMG Tag(s) were applied: PM2 => Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. PP3 => Multiple lines of computational evidence support a deleterious effect on the gene or gene product. - |
Cardiovascular phenotype Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Sep 14, 2023 | The p.C160Y pathogenic mutation (also known as c.479G>A), located in coding exon 4 of the LDLR gene, results from a G to A substitution at nucleotide position 479. The cysteine at codon 160, located in LDLR class A repeat 4, is replaced by tyrosine, an amino acid with highly dissimilar properties. Pathogenic LDLR mutations that result in the substitution or generation of cysteine residues within the cysteine-rich LDLR class A repeats and EGF-like domains are common in familial hypercholesterolemia (FH) (Villéger L. Hum Mutat. 2002;20(2):81-7). This particular cysteine change, also referred to as p.C139Y, has been detected in FH cohorts (Day IN et al. Hum. Mutat., 1997;10:116-27; Santos PC et al. Atherosclerosis, 2014 Mar;233:206-10; Jannes CE et al. Atherosclerosis, 2015 Jan;238:101-7). Other variants affecting this codon (p.C160R, p.C160G, and p.C160F) have also been detected in FH cohorts (Amsellem S et al. Hum. Genet., 2002 Dec;111:501-10; Yu W et al. Atherosclerosis, 2002 Dec;165:335-42; Chakir Kh et al. Mol. Genet. Metab., 1998 Jan;63:31-4; Bourbon M et al. Atherosclerosis, 2017 07;262:8-13). Internal structural analysis indicates this alteration eliminates a disulfide bond critical for the structural integrity of LDLR class A repeat 4 (Ambry internal data). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). Based on the supporting evidence, this alteration is interpreted as a disease-causing mutation. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at