Genetic Variant HK3:p.Gln783His (chr5-176881736-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_002115.3(HK3):c.2349G>T(p.Gln783His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000192 in 1,614,074 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

HK3
NM_002115.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.72

Variant links:

Genes affected

HK3 (HGNC:4925): (hexokinase 3) Hexokinases phosphorylate glucose to produce glucose-6-phosphate, the first step in most glucose metabolism pathways. This gene encodes hexokinase 3. Similar to hexokinases 1 and 2, this allosteric enzyme is inhibited by its product glucose-6-phosphate. [provided by RefSeq, Apr 2009]

HK3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 18 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HK3	NM_002115.3 link	c.2349G>T	p.Gln783His	missense_variant	Exon 17 of 19	ENST00000292432.10	NP_002106.2	P52790A0A024R7R1
HK3	XM_047417134.1 link	c.2252G>T	p.Arg751Ile	missense_variant	Exon 17 of 18		XP_047273090.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
HK3	ENST00000292432.10 link	c.2349G>T	p.Gln783His	missense_variant	Exon 17 of 19	1	NM_002115.3	ENSP00000292432.5	P52790
HK3	ENST00000506834.5 link	n.1361G>T		non_coding_transcript_exon_variant	Exon 8 of 10	1
HK3	ENST00000514666.1 link	n.137G>T		non_coding_transcript_exon_variant	Exon 1 of 2	2
HK3	ENST00000514058.1 link	c.*220G>T		downstream_gene_variant		5		ENSP00000424632.1	H0Y9N6

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000434

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

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251422

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461826

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727220

show subpopulations

Gnomad4 AFR exome

AF:

0.000329

Gnomad4 AMR exome

AF:

0.00

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:

0.0000331

GnomAD4 genome

AF:

0.000118

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.000434

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000164

Hom.:

Bravo

AF:

0.000125

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 17, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2349G>T (p.Q783H) alteration is located in exon 17 (coding exon 16) of the HK3 gene. This alteration results from a G to T substitution at nucleotide position 2349, causing the glutamine (Q) at amino acid position 783 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

0.19

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.22

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.92

M_CAP

Uncertain

0.14

MetaRNN

Uncertain

0.62

MetaSVM

Pathogenic

0.87

MutationAssessor

Benign

0.87

PrimateAI

Benign

0.43

PROVEAN

Benign

-2.2

REVEL

Uncertain

0.53

Sift

Uncertain

0.0090

Sift4G

Uncertain

0.0080

Polyphen

0.98

Vest4

0.52

MutPred

0.47

Gain of MoRF binding (P = 0.1275);

MVP

0.94

MPC

0.44

ClinPred

0.39

GERP RS

3.7

Varity_R

0.23

gMVP

0.49

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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