chr19-11111598-G-T
Variant summary
Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1PP2PP3_StrongPP5
The NM_000527.5(LDLR):c.1145G>T(p.Gly382Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,570 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G382D) has been classified as Uncertain significance.
Frequency
Consequence
NM_000527.5 missense
Scores
Clinical Significance
Conservation
Publications
- hypercholesterolemia, familial, 1Inheritance: AD, SD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen
- homozygous familial hypercholesterolemiaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Likely_pathogenic. The variant received 8 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_000527.5. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| LDLR | NM_000527.5 | MANE Select | c.1145G>T | p.Gly382Val | missense | Exon 8 of 18 | NP_000518.1 | ||
| LDLR | NM_001195798.2 | c.1145G>T | p.Gly382Val | missense | Exon 8 of 18 | NP_001182727.1 | |||
| LDLR | NM_001195799.2 | c.1022G>T | p.Gly341Val | missense | Exon 7 of 17 | NP_001182728.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| LDLR | ENST00000558518.6 | TSL:1 MANE Select | c.1145G>T | p.Gly382Val | missense | Exon 8 of 18 | ENSP00000454071.1 | ||
| LDLR | ENST00000252444.10 | TSL:1 | c.1403G>T | p.Gly468Val | missense | Exon 8 of 18 | ENSP00000252444.6 | ||
| LDLR | ENST00000558013.5 | TSL:1 | c.1145G>T | p.Gly382Val | missense | Exon 8 of 18 | ENSP00000453346.1 |
Frequencies
GnomAD3 genomes Cov.: 31
GnomAD4 exome AF: 0.00000411 AC: 6AN: 1461570Hom.: 0 Cov.: 32 AF XY: 0.00000825 AC XY: 6AN XY: 727090 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 31
ClinVar
Submissions by phenotype
Hypercholesterolemia, familial, 1 Pathogenic:4Uncertain:1
Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with familial hypercholesterolemia 1 (FH; MIM#143890). (I) 0108 - This gene is associated with both recessive and dominant disease. Biallelic individuals have an earlier and more severe onset (PMID: 24404629). (I) 0112 - The condition associated with this gene has incomplete penetrance (PMID: 24404629). (I) 0200 - Variant is predicted to result in a missense amino acid change from glycine to valine. (I) 0251 - This variant is heterozygous. (I) 0301 - Variant is absent from gnomAD (both v2 and v3). (SP) 0309 - Multiple alternative amino acid changes at the same position have been observed in gnomAD (v2) (highest allele count: 1 heterozygotes, 0 homozygotes). (I) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0600 - Variant is located in the annotated calcium-binding EGF-like domain (NCBI, Uniprot). (I) 0710 - Another missense variant comparable to the one identified in this case has inconclusive previous evidence for pathogenicity. p.(Gly382Asp) has been reported as VUS in ClinVar. (I) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. It has been reported in multiple individuals with FH (ClinVar, LOVD, PMIDs: 11845603, 23375686, 28964736). It has also been reported as VUS in an unaffected individual (ClinVar) and in an individual with FH who also harboured another variant in the LDLR gene, p.(Thr62Met), which has been reported as likely benign and VUS in ClinVar (PMID: 18325082). (SP) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. However, analysis of solution structure found that this variant has no clear consequences, but may be involved in interactions with the 1st LDLR-B (YWTD) domain (PMID: 11435110). (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign
This variant has been reported in multiple individuals with familial hypercholesterolemia (PMID: 35910211, 31746944, 28964736, 8325082, 24585268). This variant is absent from or rare in large population databases, including the Genome Aggregation Database (http://gnomad.broadinstitute.org/). This variant is predicted to be deleterious by in silico analysis.
not provided Pathogenic:2Uncertain:1
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Also known as p.(G361V); This variant is associated with the following publications: (PMID: 15068387, 18325082, 28964736, 32977124, 34428338, 34515413, 33740630, 24585268, 31746944, 11845603, 35910211, 39020067, 23375686, 39802654)
Familial hypercholesterolemia Pathogenic:1Uncertain:1
PS4_strong, PM2_moderate, PP3_supporting, PP1_moderate
This sequence change replaces glycine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 382 of the LDLR protein (p.Gly382Val). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with hypercholesterolemia (PMID: 18325082, 23375686, 33740630, 35910211). ClinVar contains an entry for this variant (Variation ID: 251687). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt LDLR protein function with a positive predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Cardiovascular phenotype Pathogenic:1
The p.G382V variant (also known as c.1145G>T), located in coding exon 8 of the LDLR gene, results from a G to T substitution at nucleotide position 1145. The glycine at codon 382 is replaced by valine, an amino acid with dissimilar properties. This alteration has been detected in several individuals with familial hypercholesterolemia (FH) and has been reported to be one of the most common alterations identified in a South African lipid clinic (Vergotine J et al. S. Afr. Med. J., 2001 Dec;91:1053-9; Bertolini S et al. Atherosclerosis, 2013 Apr;227:342-8; Leigh SE et al. Ann. Hum. Genet., 2008 Jul;72:485-98; Sjouke B et al. Eur. Heart J., 2015 Mar;36:560-5; Defesche JC et al. J Clin Lipidol 2017 Sep;11:1338-1346.e7; Marais AD et al. Cardiovasc J Afr 2019;30:297-304). Based on internal structural analysis, this variant is anticipated to result in a significant decrease in structural stability (Rudenko G et al. Science, 2002 Dec;298:2353-8). 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