rs104893643

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PP3_Strong

The NM_006488.3(KHK):​c.118G>A​(p.Gly40Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000215 in 1,613,320 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 34)
Exomes 𝑓: 0.00021 ( 1 hom. )

Consequence

KHK
NM_006488.3 missense

Scores

14
4

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 9.13

Publications

14 publications found
Variant links:
Genes affected
KHK (HGNC:6315): (ketohexokinase) This gene encodes ketohexokinase that catalyzes conversion of fructose to fructose-1-phosphate. The product of this gene is the first enzyme with a specialized pathway that catabolizes dietary fructose. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]
KHK Gene-Disease associations (from GenCC):
  • essential fructosuria
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.945

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006488.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
KHK
NM_006488.3
MANE Select
c.118G>Ap.Gly40Arg
missense
Exon 2 of 8NP_006479.1
KHK
NM_000221.3
c.118G>Ap.Gly40Arg
missense
Exon 2 of 8NP_000212.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
KHK
ENST00000260598.10
TSL:2 MANE Select
c.118G>Ap.Gly40Arg
missense
Exon 2 of 8ENSP00000260598.5
KHK
ENST00000260599.11
TSL:1
c.118G>Ap.Gly40Arg
missense
Exon 2 of 8ENSP00000260599.6
KHK
ENST00000429697.2
TSL:5
c.118G>Ap.Gly40Arg
missense
Exon 2 of 9ENSP00000404741.2

Frequencies

GnomAD3 genomes
AF:
0.000243
AC:
37
AN:
152220
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.0000965
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000850
Gnomad ASJ
AF:
0.000288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000265
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.000140
AC:
35
AN:
250840
AF XY:
0.000162
show subpopulations
Gnomad AFR exome
AF:
0.0000616
Gnomad AMR exome
AF:
0.0000578
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000218
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000229
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000212
AC:
310
AN:
1460982
Hom.:
1
Cov.:
30
AF XY:
0.000201
AC XY:
146
AN XY:
726842
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.0000894
AC:
4
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.0000504
AC:
2
AN:
39698
South Asian (SAS)
AF:
0.0000580
AC:
5
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52576
Middle Eastern (MID)
AF:
0.000173
AC:
1
AN:
5768
European-Non Finnish (NFE)
AF:
0.000258
AC:
287
AN:
1111956
Other (OTH)
AF:
0.000182
AC:
11
AN:
60386
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.452
Heterozygous variant carriers
0
17
34
50
67
84
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000243
AC:
37
AN:
152338
Hom.:
0
Cov.:
34
AF XY:
0.000201
AC XY:
15
AN XY:
74490
show subpopulations
African (AFR)
AF:
0.0000962
AC:
4
AN:
41580
American (AMR)
AF:
0.000849
AC:
13
AN:
15308
Ashkenazi Jewish (ASJ)
AF:
0.000288
AC:
1
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000265
AC:
18
AN:
68032
Other (OTH)
AF:
0.000473
AC:
1
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.502
Heterozygous variant carriers
0
3
6
10
13
16
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000171
Hom.:
0
Bravo
AF:
0.000276
TwinsUK
AF:
0.000539
AC:
2
ALSPAC
AF:
0.00
AC:
0
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000988
AC:
12
EpiCase
AF:
0.000164
EpiControl
AF:
0.000356

ClinVar

Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Essential fructosuria Pathogenic:1Uncertain:1
Sep 01, 1994
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

Jul 30, 2021
Department of Pathology and Laboratory Medicine, Sinai Health System
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:research

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.98
BayesDel_addAF
Pathogenic
0.30
D
BayesDel_noAF
Pathogenic
0.48
CADD
Pathogenic
30
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.86
D
Eigen
Pathogenic
0.90
Eigen_PC
Pathogenic
0.81
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Uncertain
0.97
D
M_CAP
Pathogenic
0.50
D
MetaRNN
Pathogenic
0.95
D
MetaSVM
Pathogenic
1.0
D
MutationAssessor
Pathogenic
3.5
M
PhyloP100
9.1
PrimateAI
Uncertain
0.76
T
PROVEAN
Pathogenic
-7.1
D
REVEL
Pathogenic
0.95
Sift
Uncertain
0.0020
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.98
MutPred
0.93
Gain of solvent accessibility (P = 2e-04)
MVP
0.99
MPC
0.81
ClinPred
0.84
D
GERP RS
5.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.98
gMVP
0.89
Mutation Taster
=2/98
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs104893643; hg19: chr2-27315225; COSMIC: COSV53157969; COSMIC: COSV53157969; API