rs879254739
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PM1PM2PM5PP3_StrongPP5_Very_Strong
The NM_000527.5(LDLR):c.953G>A(p.Cys318Tyr) 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 Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C318F) 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 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
LDLR | NM_000527.5 | c.953G>A | p.Cys318Tyr | missense_variant | 7/18 | ENST00000558518.6 | NP_000518.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
LDLR | ENST00000558518.6 | c.953G>A | p.Cys318Tyr | missense_variant | 7/18 | 1 | NM_000527.5 | ENSP00000454071.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome Cov.: 31
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Hypercholesterolemia, familial, 1 Pathogenic:2
Likely pathogenic, criteria provided, single submitter | literature only | LDLR-LOVD, British Heart Foundation | Mar 25, 2016 | - - |
Likely pathogenic, criteria provided, single submitter | research | Iberoamerican FH Network | Mar 01, 2016 | - - |
Cardiovascular phenotype Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 29, 2022 | The p.C318Y variant (also known as c.953G>A), located in coding exon 7 of the LDLR gene, results from a G to A substitution at nucleotide position 953. The cysteine at codon 318 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 alteration, which is also known as p.C297Y, has been reported in individuals with FH and was found to have reduced LDLR activity at 2-5% (Hobbs HH et al. Hum Mutat, 1992;1:445-66; Bertolini S et al. Atherosclerosis, 2013 Apr;227:342-8). Internal structural analysis indicates this variant eliminates a disulfide bond critical for the structural integrity of the EGF-like 1 domain (Ambry internal data). Another alteration at the same codon, p.C318F (c.953G>T), has been observed to segregate with disease in numerous unrelated Italian FH families (Lelli N et al. Hum. Genet. 1994;93(5):538-40, Mozas P et al. Hum. Mutat. 2004;24(2):187, Bertolini S et al. Atherosclerosis 2013;227(2):342-8). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the majority of available evidence to date, this variant is likely to be pathogenic. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at