Genetic Variant HK3:p.Glu900Lys (chr5-176881147-C-T) – 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.2698G>A(p.Glu900Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000093 in 1,613,040 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

HK3
NM_002115.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.66

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:

UNC5A (HGNC:12567): (unc-5 netrin receptor A) UNC5A belongs to a family of netrin-1 (MIM 601614) receptors thought to mediate the chemorepulsive effect of netrin-1 on specific axons. For more information on UNC5 proteins, see UNC5C (MIM 603610).[supplied by OMIM, Apr 2004]

UNC5A 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 GnomAdExome4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HK3	NM_002115.3 link	c.2698G>A	p.Glu900Lys	missense_variant	Exon 19 of 19	ENST00000292432.10	NP_002106.2	P52790A0A024R7R1
UNC5A	NM_133369.3 link	c.*1261C>T		downstream_gene_variant		ENST00000329542.9	NP_588610.2	Q6ZN44-1
UNC5A	XM_006714928.2 link	c.*1261C>T		downstream_gene_variant			XP_006714991.1	H0Y8R2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HK3	ENST00000292432.10 link	c.2698G>A	p.Glu900Lys	missense_variant	Exon 19 of 19	1	NM_002115.3	ENSP00000292432.5		P52790
UNC5A	ENST00000329542.9 link	c.*1261C>T		downstream_gene_variant		1	NM_133369.3	ENSP00000332737.4		Q6ZN44-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000480

AC:

AN:

249966

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135466

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000348

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:

0.00000958

AC:

AN:

1460816

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

726736

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000313

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:

0.00000657

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

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:

0.0000340

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 03, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2698G>A (p.E900K) alteration is located in exon 19 (coding exon 18) of the HK3 gene. This alteration results from a G to A substitution at nucleotide position 2698, causing the glutamic acid (E) at amino acid position 900 to be replaced by a lysine (K). 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

0.17

BayesDel_addAF

Uncertain

0.061

BayesDel_noAF

Pathogenic

0.16

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.49

Eigen

Uncertain

0.19

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.56

MetaSVM

Uncertain

0.77

MutationAssessor

Benign

1.2

PrimateAI

Pathogenic

0.80

PROVEAN

Uncertain

-2.8

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0060

Sift4G

Benign

0.19

Polyphen

0.18

Vest4

0.60

MutPred

0.74

Gain of ubiquitination at E900 (P = 0.0138);

MVP

0.94

MPC

0.14

ClinPred

0.25

GERP RS

5.2

Varity_R

0.38

gMVP

0.33

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