Genetic Variant HK2:p.Arg358Leu (chr2-74878729-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000189.5(HK2):c.1073G>T(p.Arg358Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,222 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R358W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

HK2
NM_000189.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.52

Publications

1 publications found

Variant links:

Genes affected

HK2 (HGNC:4923): (hexokinase 2) Hexokinases phosphorylate glucose to produce glucose-6-phosphate, the first step in most glucose metabolism pathways. This gene encodes hexokinase 2, the predominant form found in skeletal muscle. It localizes to the outer membrane of mitochondria. Expression of this gene is insulin-responsive, and studies in rat suggest that it is involved in the increased rate of glycolysis seen in rapidly growing cancer cells. [provided by RefSeq, Apr 2009]

HK2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HK2	NM_000189.5 link	c.1073G>T	p.Arg358Leu	missense_variant	Exon 9 of 18	ENST00000290573.7	NP_000180.2	P52789

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HK2	ENST00000290573.7 link	c.1073G>T	p.Arg358Leu	missense_variant	Exon 9 of 18	1	NM_000189.5	ENSP00000290573.2		P52789
HK2	ENST00000409174.1 link	c.989G>T	p.Arg330Leu	missense_variant	Exon 9 of 18	1		ENSP00000387140.1		E9PB90

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74362

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41460

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.097

BayesDel_noAF

Benign

-0.38

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.51

D;.

Eigen

Benign

0.15

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.76

T;T

M_CAP

Benign

0.011

MetaRNN

Uncertain

0.56

D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;.

PhyloP100

2.5

PrimateAI

Benign

0.39

PROVEAN

Benign

-2.1

N;N

REVEL

Benign

0.097

Sift

Benign

0.036

D;D

Sift4G

Benign

0.23

T;T

Polyphen

0.65

P;.

Vest4

0.59

MutPred

0.52

Loss of disorder (P = 0.0696);.;

MVP

0.61

MPC

0.53

ClinPred

0.80

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.34

gMVP

0.54

Mutation Taster

=43/57

disease causing

(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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over