rs749220643
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate
The NM_000527.5(LDLR):c.811G>A(p.Val271Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,614,022 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000527.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LDLR | NM_000527.5 | c.811G>A | p.Val271Ile | missense_variant | 5/18 | ENST00000558518.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LDLR | ENST00000558518.6 | c.811G>A | p.Val271Ile | missense_variant | 5/18 | 1 | NM_000527.5 | P3 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152184Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251456Hom.: 0 AF XY: 0.0000294 AC XY: 4AN XY: 135912
GnomAD4 exome AF: 0.0000103 AC: 15AN: 1461838Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9AN XY: 727220
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152184Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74338
ClinVar
Submissions by phenotype
Hypercholesterolemia, familial, 1 Pathogenic:1Benign:1
Likely pathogenic, criteria provided, single submitter | research | Institute for Integrative and Experimental Genomics, University of Luebeck | - | - - |
Likely benign, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Nov 20, 2023 | - - |
Familial hypercholesterolemia Pathogenic:1Benign:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Nov 17, 2023 | This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 271 of the LDLR protein (p.Val271Ile). This variant is present in population databases (rs749220643, gnomAD 0.01%). This missense change has been observed in individuals with familial hypercholesterolemia (PMID: 26036859, 29233637, 30293936, 33994402; Invitae). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 189297). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt LDLR protein function with a negative predictive value of 95%. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. - |
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | May 08, 2018 | - - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Oct 23, 2023 | Variant summary: LDLR c.811G>A (p.Val271Ile) 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 2.4e-05 in 251456 control chromosomes. c.811G>A at a heterozygous state has been reported in the literature in several individuals affected with Hypercholesterolemia, or Coronary Aartery Disease and Myocardial Infarction with elevated low-density lipoprotein cholesterollevels (examples, Branne_2016, Huang_2020, Tomar_2022, Martin-Campos_2018). Particularly, Branne_2016 reported this variant in three siblings, two of whom were diagnosed with Coronary Aartery Disease and Myocardial Infarction, and the rest carrier remained unaffected with elevated LDLC levels. However, other studies evaluated this variant insignificant or Likely benign. These report(s) do not provide unequivocal conclusions about association of the variant with autosomal dominant or autosomal recessive Hypercholesterolemia. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 26036859, 33994402, 30293936, 35130036). One submitter has cited clinical-significance assessments for this variant to ClinVar after 2014 and has classified the variant as likely benign. Based on the evidence outlined above, the variant was classified as VUS-possibly pathogenic. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at