rs17853193

Positions:

• chr9-128833585-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PM4

The NM_004059.5(KYAT1):​c.1268A>G​(p.Ter423TrpextTer2) variant causes a stop lost change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: 32)
• Consequence: KYAT1 NM_004059.5 stop_lost
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.849

Genes affected

KYAT1 (HGNC:1564): (kynurenine aminotransferase 1) This gene encodes a cytosolic enzyme that is responsible for the metabolism of cysteine conjugates of certain halogenated alkenes and alkanes. This metabolism can form reactive metabolites leading to nephrotoxicity and neurotoxicity. Increased levels of this enzyme have been linked to schizophrenia. Multiple transcript variants that encode different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

KYAT1-SPOUT1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in NM_004059.5 Downstream stopcodon found after 19 codons.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KYAT1	NM_004059.5	c.1268A>G	p.Ter423TrpextTer2	stop_lost	13/13	ENST00000302586.8
KYAT1-SPOUT1	NR_182311.1	n.1328A>G		non_coding_transcript_exon_variant	13/25

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KYAT1	ENST00000302586.8	c.1268A>G	p.Ter423TrpextTer2	stop_lost	13/13	1	NM_004059.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.76
CADD	Benign	2.5
DANN	Benign	0.48
Eigen	Benign	-0.18
Eigen_PC	Benign	-0.63
FATHMM_MKL	Benign	0.021	N
MutationTaster	Benign	1.0	N;N;N
Vest4		0.020
GERP RS		-7.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Other links and lift over

dbSNP: rs17853193; hg19: chr9-131595864;