rs267606764
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PP5_Very_Strong
The NM_138413.4(HOGA1):c.769T>G(p.Cys257Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000205 in 1,613,152 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Consequence
NM_138413.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
HOGA1 | ENST00000370646.9 | c.769T>G | p.Cys257Gly | missense_variant | Exon 6 of 7 | 1 | NM_138413.4 | ENSP00000359680.4 | ||
ENSG00000249967 | ENST00000370649.3 | c.280T>G | p.Cys94Gly | missense_variant | Exon 2 of 10 | 2 | ENSP00000359683.3 | |||
HOGA1 | ENST00000370647.8 | c.280T>G | p.Cys94Gly | missense_variant | Exon 2 of 3 | 1 | ENSP00000359681.4 | |||
HOGA1 | ENST00000370642.4 | c.178T>G | p.Cys60Gly | missense_variant | Exon 3 of 4 | 5 | ENSP00000359676.4 |
Frequencies
GnomAD3 genomes AF: 0.0000394 AC: 6AN: 152182Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000641 AC: 16AN: 249558Hom.: 0 AF XY: 0.0000296 AC XY: 4AN XY: 135030
GnomAD4 exome AF: 0.0000185 AC: 27AN: 1460852Hom.: 0 Cov.: 32 AF XY: 0.0000138 AC XY: 10AN XY: 726718
GnomAD4 genome AF: 0.0000394 AC: 6AN: 152300Hom.: 0 Cov.: 32 AF XY: 0.0000671 AC XY: 5AN XY: 74470
ClinVar
Submissions by phenotype
Primary hyperoxaluria type 3 Pathogenic:6
Variant_type:missense/MutationTaster:Disease_causing/CADD:Damaging/phyloP:Conserved/phastCons:Conserved/gnomAD_exome_EastAsian:0.0008/ExAC_EastAsian:0.0008/dbSNP:rs267606764 -
ACMG: PS4 PS5 PM1 PM2 PM3 PP5 -
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Variant summary: HOGA1 c.769T>G (p.Cys257Gly) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 6.4e-05 in 249558 control chromosomes, predominantly at a frequency of 0.00082 within the East Asian subpopulation in the gnomAD database. This frequency is not higher than the maximum expected for a pathogenic variant in HOGA1 causing Primary Hyperoxaluria, Type III (0.0015), allowing no conclusion about variant significance. c.769T>G has been reported in the literature in homozygous and compound heterozygous state in multiple individuals affected with Primary Hyperoxaluria, Type III (examples: Allard_2015, Belostotsky_2010, Fang_2019, Du_2021). These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function, and demonstrated that the variant resulted in no measurable activity (Riedel_2012). Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014, and classified the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -
PS3_Moderate+PM3_Strong+PM2_Supporting+PP3 -
not provided Pathogenic:3
This sequence change replaces cysteine, which is neutral and slightly polar, with glycine, which is neutral and non-polar, at codon 257 of the HOGA1 protein (p.Cys257Gly). This variant is present in population databases (rs267606764, gnomAD 0.09%). This missense change has been observed in individual(s) with primary hyperoxaluria (PMID: 20797690, 25972204, 30488096). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 34). 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 HOGA1 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects HOGA1 function (PMID: 22771891). For these reasons, this variant has been classified as Pathogenic. -
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at