rs180177307
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_012203.2(GRHPR):c.337G>A(p.Glu113Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000682 in 1,613,886 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 (★★).
Frequency
Consequence
NM_012203.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
GRHPR | NM_012203.2 | c.337G>A | p.Glu113Lys | missense_variant | Exon 4 of 9 | ENST00000318158.11 | NP_036335.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152148Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251480Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135920
GnomAD4 exome AF: 0.00000616 AC: 9AN: 1461738Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4AN XY: 727176
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152148Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74326
ClinVar
Submissions by phenotype
Primary hyperoxaluria, type II Pathogenic:5
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Variant_type:missense/MutationTaster:Disease_causing_automatic/CADD:Damaging/phyloP:Conserved/phastCons:Conserved/gnomAD_exome_EastAsian:0/ExAC_EastAsian:-/dbSNP:rs180177307 -
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Variant summary: GRHPR c.337G>A (p.Glu113Lys) results in a conservative amino acid change located in the D-isomer specific 2-hydroxyacid dehydrogenase, catalytic domain (IPR006139) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 in 251480 control chromosomes. c.337G>A has been reported in the literature as a compound heterozygous genotype in at-least two individuals affected with Primary Hyperoxaluria Type 2 (example, Takayama_2007, Hopp_2015). These data indicate that the variant may be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in abolishment of normal GRHPR enzyme activity in an in-vitro COS-1 experimental system (Takayama_2007). No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as likely pathogenic. -
not provided Pathogenic:1
This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 113 of the GRHPR protein (p.Glu113Lys). This variant is present in population databases (rs180177307, gnomAD 0.0009%). This missense change has been observed in individual(s) with clinical features of primary hyperoxaluria type 2 (PMID: 17510093, 35149915). ClinVar contains an entry for this variant (Variation ID: 188765). 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 expected to disrupt GRHPR protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects GRHPR function (PMID: 17510093). 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at