chr5-75345615-G-A
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Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate
The NM_000859.3(HMGCR):c.407G>A(p.Arg136Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,460,832 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
HMGCR
NM_000859.3 missense
NM_000859.3 missense
Scores
5
14
Clinical Significance
Conservation
PhyloP100: 5.67
Genes affected
HMGCR (HGNC:5006): (3-hydroxy-3-methylglutaryl-CoA reductase) HMG-CoA reductase is the rate-limiting enzyme for cholesterol synthesis and is regulated via a negative feedback mechanism mediated by sterols and non-sterol metabolites derived from mevalonate, the product of the reaction catalyzed by reductase. Normally in mammalian cells this enzyme is suppressed by cholesterol derived from the internalization and degradation of low density lipoprotein (LDL) via the LDL receptor. Competitive inhibitors of the reductase induce the expression of LDL receptors in the liver, which in turn increases the catabolism of plasma LDL and lowers the plasma concentration of cholesterol, an important determinant of atherosclerosis. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), HMGCR. . Gene score misZ 3.7591 (greater than the threshold 3.09). Trascript score misZ 4.2252 (greater than threshold 3.09). GenCC has associacion of gene with muscular dystrophy, limb-girdle, autosomal recessive 28.
BP4
Computational evidence support a benign effect (MetaRNN=0.105896264).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
HMGCR | NM_000859.3 | c.407G>A | p.Arg136Lys | missense_variant | 5/20 | ENST00000287936.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
HMGCR | ENST00000287936.9 | c.407G>A | p.Arg136Lys | missense_variant | 5/20 | 1 | NM_000859.3 | P1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
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32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251224Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135782
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GnomAD4 exome AF: 0.00000137 AC: 2AN: 1460832Hom.: 0 Cov.: 28 AF XY: 0.00000275 AC XY: 2AN XY: 726812
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GnomAD4 genome Cov.: 32
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32
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 01, 2023 | The c.407G>A (p.R136K) alteration is located in exon 5 (coding exon 4) of the HMGCR gene. This alteration results from a G to A substitution at nucleotide position 407, causing the arginine (R) at amino acid position 136 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
DEOGEN2
Uncertain
D;D;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
.;T;D
M_CAP
Benign
D
MetaRNN
Benign
T;T;T
MetaSVM
Uncertain
T
MutationAssessor
Benign
N;N;N
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N
REVEL
Uncertain
Sift
Benign
T;T;T
Sift4G
Benign
T;T;T
Polyphen
B;B;B
Vest4
MutPred
Gain of ubiquitination at R136 (P = 0.0238);Gain of ubiquitination at R136 (P = 0.0238);Gain of ubiquitination at R136 (P = 0.0238);
MVP
MPC
0.84
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at