rs180177161

Variant summary

Our verdict is Pathogenic. The variant received 19 ACMG points: 19P and 0B. PM1PM2PM5PP2PP3_StrongPP5_Very_Strong

The NM_000030.3(AGXT):​c.1079G>A​(p.Arg360Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000114 in 1,408,020 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R360P) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

AGXT
NM_000030.3 missense

Scores

13
5
1

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: 7.53

Publications

10 publications found
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]
AGXT Gene-Disease associations (from GenCC):
  • alanine glyoxylate aminotransferase deficiency
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • primary hyperoxaluria type 1
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Myriad Women’s Health, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 19 ACMG points.

PM1
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_000030.3
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr2-240878721-G-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 548671.Status of the report is no_assertion_criteria_provided, 0 stars.
PP2
Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 130 curated pathogenic missense variants (we use a threshold of 10). The gene has 12 curated benign missense variants. Gene score misZ: -0.26789 (below the threshold of 3.09). Trascript score misZ: -0.48778 (below the threshold of 3.09). GenCC associations: The gene is linked to alanine glyoxylate aminotransferase deficiency, primary hyperoxaluria type 1.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.996
PP5
Variant 2-240878721-G-A is Pathogenic according to our data. Variant chr2-240878721-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 204147.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.1079G>A p.Arg360Gln missense_variant Exon 11 of 11 ENST00000307503.4 NP_000021.1 P21549

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
AGXTENST00000307503.4 linkc.1079G>A p.Arg360Gln missense_variant Exon 11 of 11 1 NM_000030.3 ENSP00000302620.3 P21549
AGXTENST00000470255.1 linkn.857G>A non_coding_transcript_exon_variant Exon 3 of 3 2

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000591
AC:
1
AN:
169094
AF XY:
0.0000110
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000139
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000114
AC:
16
AN:
1408020
Hom.:
0
Cov.:
32
AF XY:
0.0000115
AC XY:
8
AN XY:
696264
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32686
American (AMR)
AF:
0.00
AC:
0
AN:
36890
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25242
East Asian (EAS)
AF:
0.00
AC:
0
AN:
37450
South Asian (SAS)
AF:
0.0000125
AC:
1
AN:
80126
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
42968
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5602
European-Non Finnish (NFE)
AF:
0.0000138
AC:
15
AN:
1088406
Other (OTH)
AF:
0.00
AC:
0
AN:
58650
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.506
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Primary hyperoxaluria, type I Pathogenic:4
Jan 03, 2024
Baylor Genetics
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Feb 08, 2018
Counsyl
Significance:Likely pathogenic
Review Status:no assertion criteria provided
Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

May 10, 2022
Fulgent Genetics, Fulgent Genetics
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Nov 27, 2014
Clinical Biochemistry Laboratory, Health Services Laboratory
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:in vitro

- -

not provided Pathogenic:1
Feb 02, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 360 of the AGXT protein (p.Arg360Gln). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individuals with primary hyperoxaluria type I (PMID: 21705122, 27935012, 30341509, 33721035). ClinVar contains an entry for this variant (Variation ID: 204147). 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 AGXT protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects AGXT function (PMID: 19479957, 30341509). This variant disrupts the p.Arg360 amino acid residue in AGXT. Other variant(s) that disrupt this residue have been observed in individuals with AGXT-related conditions (PMID: 25644115, 28893421), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.66
BayesDel_addAF
Pathogenic
0.55
D
BayesDel_noAF
Pathogenic
0.55
CADD
Pathogenic
31
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.87
D
Eigen
Pathogenic
0.73
Eigen_PC
Uncertain
0.56
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Uncertain
0.97
D
M_CAP
Pathogenic
0.93
D
MetaRNN
Pathogenic
1.0
D
MetaSVM
Pathogenic
1.0
D
MutationAssessor
Pathogenic
4.4
H
PhyloP100
7.5
PrimateAI
Uncertain
0.52
T
PROVEAN
Uncertain
-3.6
D
REVEL
Pathogenic
0.95
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.93
MutPred
0.97
Loss of sheet (P = 0.0357);
MVP
0.97
MPC
0.26
ClinPred
1.0
D
GERP RS
4.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.98
gMVP
0.98
Mutation Taster
=8/92
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.11
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs180177161; hg19: chr2-241818138; API