19-11113643-C-G
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000527.5(LDLR):c.1467C>G(p.Tyr489Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,766 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. Y489Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_000527.5 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LDLR | NM_000527.5 | c.1467C>G | p.Tyr489Ter | stop_gained | 10/18 | ENST00000558518.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LDLR | ENST00000558518.6 | c.1467C>G | p.Tyr489Ter | stop_gained | 10/18 | 1 | NM_000527.5 | P3 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251404Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135896
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461766Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1AN XY: 727180
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Hypercholesterolemia, familial, 1 Pathogenic:4
Likely pathogenic, criteria provided, single submitter | clinical testing | Robarts Research Institute, Western University | - | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute | - | - - |
Pathogenic, criteria provided, single submitter | curation | Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard | Jan 22, 2020 | The p.Tyr489Ter (sometimes called p.Tyr468Ter) variant in LDLR has been reported in at least 15 individuals with Familial Hypercholesterolemia, segregated with disease in 3 affected relatives from one family (PMID: 27765764, 7833932, 25637381), and has been identified in 0.0008796% (1/113692) of European (non-Finnish) chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs370777955). 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 nonsense variant leads to a premature termination codon at position 489, which is predicted to lead to a truncated or absent protein. Heterozygous loss of function of the LDLR gene is an established disease mechanism in Familial Hypercholesterolemia. One rare nonsense variant with a different nucleotide change but the same amino acid change as this variant has been reported in association with disease in ClinVar, supporting that this variant may be pathogenic (Variation ID: 440647). In summary, this variant meets criteria to be classified as pathogenic for Familial Hypercholesterolemia in an autosomal dominant manner based on the predicted impact of the variant and a report of another variant with the same amino acid change. ACMG/AMP Criteria applied: PVS1, PS1, PP1, PS4 (Richards 2015). - |
Pathogenic, criteria provided, single submitter | literature only | LDLR-LOVD, British Heart Foundation | Mar 25, 2016 | - - |
Hypercholesterolemia Pathogenic:1
Pathogenic, no assertion criteria provided | research | CSER _CC_NCGL, University of Washington | Jun 01, 2014 | - - |
Cardiovascular phenotype Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Feb 27, 2024 | The p.Y489* pathogenic mutation (also known as c.1467C>G), located in coding exon 10 of the LDLR gene, results from a C to G substitution at nucleotide position 1467. This changes the amino acid from a tyrosine to a stop codon within coding exon 10. This variant (also referred to as Y468X) has been reported in multiple individuals and cohorts with familial hypercholesterolemia (Drouin-Chartier JP et al. Metabolism, 2015 Nov;64:1541-7; Wang J et al. Arterioscler Thromb Vasc Biol, 2016 Dec;36:2439-2445). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. - |
Familial hypercholesterolemia Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | May 23, 2023 | This variant is also known as stop 468. For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 161270). This premature translational stop signal has been observed in individual(s) with FH and clinical features of familial hypercholesterolemia (FH) (PMID: 7833932, 25487149). It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs370777955, gnomAD 0.0009%). This sequence change creates a premature translational stop signal (p.Tyr489*) in the LDLR gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in LDLR are known to be pathogenic (PMID: 20809525, 28645073). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at