Variant 1-241564987-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000366559.9(KMO):c.616T>C(p.Tyr206His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000483 in 1,593,446 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000051 ( 0 hom. )

Consequence

KMO
ENST00000366559.9 missense, splice_region

Scores

Splicing: ADA: 0.0003779

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.06

Variant links:

Genes affected

KMO (HGNC:6381): (kynurenine 3-monooxygenase) This gene encodes a mitochondrion outer membrane protein that catalyzes the hydroxylation of L-tryptophan metabolite, L-kynurenine, to form L-3-hydroxykynurenine. Studies in yeast identified this gene as a therapeutic target for Huntington disease. [provided by RefSeq, Oct 2011]

KMO links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1575577).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KMO	NM_003679.5 linkuse as main transcript	c.616T>C	p.Tyr206His	missense_variant, splice_region_variant	8/15	ENST00000366559.9	NP_003670.2
KMO	NM_001410944.1 linkuse as main transcript	c.616T>C	p.Tyr206His	missense_variant, splice_region_variant	8/15		NP_001397873.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KMO	ENST00000366559.9 linkuse as main transcript	c.616T>C	p.Tyr206His	missense_variant, splice_region_variant	8/15	1	NM_003679.5	ENSP00000355517	P2	O15229-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000359

AC:

AN:

250552

Hom.:

AF XY:

0.0000517

AC XY:

AN XY:

135436

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000581

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000529

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000513

AC:

AN:

1441222

Hom.:

Cov.:

AF XY:

0.0000543

AC XY:

AN XY:

718546

show subpopulations

Gnomad4 AFR exome

AF:

0.0000606

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000567

Gnomad4 OTH exome

AF:

0.000151

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000675

Hom.:

Bravo

AF:

0.0000604

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 31, 2023

The c.616T>C (p.Y206H) alteration is located in exon 8 (coding exon 8) of the KMO gene. This alteration results from a T to C substitution at nucleotide position 616, causing the tyrosine (Y) at amino acid position 206 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

.;T;.

Eigen

Benign

-0.23

Eigen_PC

Benign

-0.049

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.89

D;D;D

M_CAP

Benign

0.011

MetaRNN

Benign

0.16

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0050

N;N;N

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Benign

0.39

PROVEAN

Uncertain

-3.3

D;D;D

REVEL

Benign

0.082

Sift

Benign

0.072

T;T;T

Sift4G

Benign

0.14

T;T;T

Polyphen

0.0070

B;B;.

Vest4

0.31

MutPred

0.60

Loss of phosphorylation at Y206 (P = 0.0196);Loss of phosphorylation at Y206 (P = 0.0196);Loss of phosphorylation at Y206 (P = 0.0196);

MVP

0.58

MPC

0.47

ClinPred

0.071

GERP RS

4.4

Varity_R

0.26

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00038

dbscSNV1_RF

Benign

0.016

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over