1-43453434-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001190880.3(HYI):c.263A>G(p.Glu88Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000256 in 1,562,708 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

HYI
NM_001190880.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.68

Variant links:

Genes affected

HYI (HGNC:26948): (hydroxypyruvate isomerase (putative)) This gene encodes a putative hydroxypyruvate isomerase, which likely catalyzes the conversion of hydroxypyruvate to 2-hydroxy-3-oxopropanoate, and may be involved in carbohydrate transport and metabolism. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2011]

HYI links:

SZT2 (HGNC:29040): (SZT2 subunit of KICSTOR complex) The protein encoded by this gene is expressed in the brain, predominantly in the parietal and frontal cortex as well as in dorsal root ganglia. It is localized to the peroxisome, and is implicated in resistance to oxidative stress. It likely functions by increasing superoxide dismutase (SOD) activity, but itself has no direct SOD activity. Studies in mice show that this gene confers low seizure threshold, and may also enhance epileptogenesis. [provided by RefSeq, Jun 2011]

SZT2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2774129).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HYI	NM_001190880.3 linkuse as main transcript	c.263A>G	p.Glu88Gly	missense_variant	2/8	ENST00000372430.9
SZT2	NM_001365999.1 linkuse as main transcript	c.*2954T>C		3_prime_UTR_variant	72/72	ENST00000634258.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HYI	ENST00000372430.9 linkuse as main transcript	c.263A>G	p.Glu88Gly	missense_variant	2/8	1	NM_001190880.3	P1	Q5T013-1
SZT2	ENST00000634258.3 linkuse as main transcript	c.*2954T>C		3_prime_UTR_variant	72/72	5	NM_001365999.1	P1	Q5T011-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152032

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000213

AC:

AN:

1410676

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

696970

show subpopulations

Gnomad4 AFR exome

AF:

0.0000313

Gnomad4 AMR exome

AF:

0.0000505

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152032

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74254

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

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 17, 2021

The c.263A>G (p.E88G) alteration is located in exon 2 (coding exon 2) of the HYI gene. This alteration results from a A to G substitution at nucleotide position 263, causing the glutamic acid (E) at amino acid position 88 to be replaced by a glycine (G). 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

0.11

BayesDel_addAF

Benign

-0.0077

BayesDel_noAF

Benign

-0.25

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.29

T;T;T;.;T

Eigen

Benign

0.0079

Eigen_PC

Benign

-0.036

FATHMM_MKL

Uncertain

0.77

LIST_S2

Benign

0.47

T;T;T;T;T

M_CAP

Benign

0.032

MetaRNN

Benign

0.28

T;T;T;T;T

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.8

L;.;.;L;.

MutationTaster

Benign

0.98

N;N;N;N;N

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-3.4

D;.;.;D;D

REVEL

Benign

0.25

Sift

Benign

0.24

T;.;.;T;T

Sift4G

Benign

0.20

T;T;T;T;T

Polyphen

0.022

B;.;.;.;.

Vest4

0.35

MutPred

0.58

Loss of stability (P = 0.0239);Loss of stability (P = 0.0239);Loss of stability (P = 0.0239);Loss of stability (P = 0.0239);Loss of stability (P = 0.0239);

MVP

0.55

MPC

0.063

ClinPred

0.39

GERP RS

3.3

Varity_R

0.24

gMVP

0.61

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

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