Genetic Variant AGXT:p.Ala368Thr (chr2-240878744-G-A) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1PM2PP2PP3_StrongPP5

The NM_000030.3(AGXT):c.1102G>A(p.Ala368Thr) variant causes a missense change involving the alteration of a non-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 (no stars).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

AGXT
NM_000030.3 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 1.27

Publications

2 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

AGXT links:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in NM_000030.3

PM2

Very rare variant in population databases, with high coverage;

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, 0.977

PP5

Variant 2-240878744-G-A is Pathogenic according to our data. Variant chr2-240878744-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 204148.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000030.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AGXT	NM_000030.3	MANE Select	c.1102G>A	p.Ala368Thr	missense	Exon 11 of 11	NP_000021.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AGXT	ENST00000307503.4	TSL:1 MANE Select	c.1102G>A	p.Ala368Thr	missense	Exon 11 of 11	ENSP00000302620.3
	AGXT	ENST00000470255.1	TSL:2	n.880G>A		non_coding_transcript_exon	Exon 3 of 3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1427138

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

707162

African (AFR)

AF:

0.00

AC:

AN:

33160

American (AMR)

AF:

0.00

AC:

AN:

39274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25418

East Asian (EAS)

AF:

0.00

AC:

AN:

38514

South Asian (SAS)

AF:

0.00

AC:

AN:

81378

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45678

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5708

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1098680

Other (OTH)

AF:

0.00

AC:

AN:

59328

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Primary hyperoxaluria, type I

Pathogenic:1

Nov 27, 2014

Clinical Biochemistry Laboratory, Health Services Laboratory

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:in vitro

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Uncertain

0.11

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.50

Eigen

Benign

0.15

Eigen_PC

Benign

-0.034

FATHMM_MKL

Benign

0.25

LIST_S2

Uncertain

0.93

M_CAP

Pathogenic

0.49

MetaRNN

Pathogenic

0.98

MetaSVM

Uncertain

0.58

MutationAssessor

Uncertain

2.5

PhyloP100

1.3

PrimateAI

Benign

0.44

PROVEAN

Benign

-2.3

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.041

Polyphen

0.98

Vest4

0.68

MutPred

0.85

Gain of catalytic residue at A368 (P = 0.015)

MVP

0.90

MPC

0.22

ClinPred

0.91

GERP RS

3.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.68

gMVP

0.88

Mutation Taster

=80/20

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over