chr2-240877581-T-C

Variant names:

• chr2-240877581-T-C
• rs180177292
• NM_000030.3:c.891T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000030.3(AGXT):​c.891T>C​(p.Tyr297Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000143 in 1,398,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: AGXT NM_000030.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.657
• Publications: 0 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).

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.891T>C	p.Tyr297Tyr	synonymous	Exon 9 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.891T>C	p.Tyr297Tyr	synonymous	Exon 9 of 11	ENSP00000302620.3
	AGXT	ENST00000470255.1	TSL:2	n.669T>C		non_coding_transcript_exon	Exon 1 of 3

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD2 exomes AF: 0.00000649 AC: 1 AN: 153982 AF XY: 0.0000123

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000143 AC: 2 AN: 1398578 Hom.: 0 Cov.: 31 AF XY: 0.00000290 AC XY: 2 AN XY: 689864

African (AFR) AF: 0.00 AC: 0 AN: 31614

American (AMR) AF: 0.00 AC: 0 AN: 35688

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25160

East Asian (EAS) AF: 0.00 AC: 0 AN: 35766

South Asian (SAS) AF: 0.0000252 AC: 2 AN: 79238

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48490

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5696

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1078930

Other (OTH) AF: 0.00 AC: 0 AN: 57996

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.69
DANN	Benign	0.26
PhyloP100		-0.66
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs180177292; hg19: chr2-241816998;