2-240869191-G-C

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_000030.3(AGXT):​c.187G>C​(p.Gly63Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: not found (cov: 32)

Consequence

AGXT
NM_000030.3 missense

Scores

10
6
3

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 9.18
Variant links:
Genes affected
AGXT (HGNC:341): (alanine--glyoxylate aminotransferase) This gene is expressed only in the liver and the encoded protein is localized mostly in the peroxisomes, where it is involved in glyoxylate detoxification. Mutations in this gene, some of which alter subcellular targetting, have been associated with type I primary hyperoxaluria. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.983
PP5
Variant 2-240869191-G-C is Pathogenic according to our data. Variant chr2-240869191-G-C is described in ClinVar as [Pathogenic]. Clinvar id is 204079.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
AGXTNM_000030.3 linkc.187G>C p.Gly63Arg missense_variant Exon 2 of 11 ENST00000307503.4 NP_000021.1 P21549

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
AGXTENST00000307503.4 linkc.187G>C p.Gly63Arg missense_variant Exon 2 of 11 1 NM_000030.3 ENSP00000302620.3 P21549
AGXTENST00000472436.1 linkn.207G>C non_coding_transcript_exon_variant Exon 2 of 5 2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
34
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Primary hyperoxaluria, type I Pathogenic:2
Nov 27, 2014
Clinical Biochemistry Laboratory, Health Services Laboratory
Significance: Pathogenic
Review Status: no assertion criteria provided
Collection Method: research

- -

May 23, 2024
Fulgent Genetics, Fulgent Genetics
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Primary hyperoxaluria Pathogenic:1
May 21, 2024
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: AGXT c.187G>C (p.Gly63Arg) results in a non-conservative amino acid change located in the Aminotransferase class V domain (IPR000192) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 251324 control chromosomes. c.187G>C has been reported exclusively as homozygous in the literature in multiple individuals affected with autosomal recessive Primary Hyperoxaluria Type 1 (Alfadhel_2012, Alfadhel_2023). These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence that this variant affects the normal function of the protein (Dindo_2018). The following publications have been ascertained in the context of this evaluation (PMID: 27629047, 36409364, 22956877, 29110180, 33721035, 19479957). ClinVar contains an entry for this variant (Variation ID: 204079). Based on the evidence outlined above, the variant was classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.86
BayesDel_addAF
Pathogenic
0.40
D
BayesDel_noAF
Pathogenic
0.33
CADD
Pathogenic
30
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.75
D
Eigen
Uncertain
0.53
Eigen_PC
Uncertain
0.49
FATHMM_MKL
Pathogenic
1.0
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Pathogenic
0.53
D
MetaRNN
Pathogenic
0.98
D
MetaSVM
Uncertain
0.30
D
MutationAssessor
Uncertain
2.3
M
PrimateAI
Uncertain
0.65
T
PROVEAN
Pathogenic
-7.3
D
REVEL
Pathogenic
0.82
Sift
Benign
0.063
T
Sift4G
Benign
0.23
T
Polyphen
1.0
D
Vest4
0.92
MutPred
0.83
Gain of catalytic residue at G63 (P = 0.0565);
MVP
0.97
MPC
0.27
ClinPred
1.0
D
GERP RS
4.1
Varity_R
0.96
gMVP
0.96

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs180177181; hg19: chr2-241808608; API