dbSNP rs77440690: GCK:c.208+11G>A (chr7-44153290-C-T) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_000162.5(GCK):c.208+11G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00185 in 1,613,960 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0019 ( 4 hom. )

Consequence

GCK
NM_000162.5 intron

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9

Conservation

PhyloP100: 1.56

Publications

1 publications found

Variant links:

Genes affected

GCK (HGNC:4195): (glucokinase) This gene encodes a member of the hexokinase family of proteins. Hexokinases phosphorylate glucose to produce glucose-6-phosphate, the first step in most glucose metabolism pathways. In contrast to other forms of hexokinase, this enzyme is not inhibited by its product glucose-6-phosphate but remains active while glucose is abundant. The use of multiple promoters and alternative splicing of this gene result in distinct protein isoforms that exhibit tissue-specific expression in the pancreas and liver. In the pancreas, this enzyme plays a role in glucose-stimulated insulin secretion, while in the liver, this enzyme is important in glucose uptake and conversion to glycogen. Mutations in this gene that alter enzyme activity have been associated with multiple types of diabetes and hyperinsulinemic hypoglycemia. [provided by RefSeq, Aug 2017]

GCK Gene-Disease associations (from GenCC):

hyperinsulinism due to glucokinase deficiency
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
maturity-onset diabetes of the young type 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
monogenic diabetes
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
diabetes mellitus, noninsulin-dependent
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
permanent neonatal diabetes mellitus 1
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
transient neonatal diabetes mellitus
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
maturity-onset diabetes of the young
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
permanent neonatal diabetes mellitus
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

GCK links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant 7-44153290-C-T is Benign according to our data. Variant chr7-44153290-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 36206.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00121 (185/152302) while in subpopulation NFE AF = 0.00196 (133/68020). AF 95% confidence interval is 0.00168. There are 0 homozygotes in GnomAd4. There are 85 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 4 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000162.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
GCK	NM_000162.5	MANE Select	c.208+11G>A	intron	N/A	NP_000153.1	Q53Y25
GCK	NM_033507.3		c.211+11G>A	intron	N/A	NP_277042.1	P35557-2
GCK	NM_033508.3		c.205+11G>A	intron	N/A	NP_277043.1	P35557-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
GCK	ENST00000403799.8	TSL:1 MANE Select	c.208+11G>A	intron	N/A	ENSP00000384247.3	P35557-1
GCK	ENST00000395796.8	TSL:1	n.*206+11G>A	intron	N/A	ENSP00000379142.4	A0A8C8KJG0
GCK	ENST00000671824.1		c.208+11G>A	intron	N/A	ENSP00000500264.1	A0A5F9ZHE0

Frequencies

GnomAD3 genomes

AF:

0.00122

AC:

185

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00131

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00122

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00196

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.00160

AC:

401

AN:

251062

AF XY:

0.00158

show subpopulations

Gnomad AFR exome

AF:

0.000492

Gnomad AMR exome

AF:

0.000549

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000971

Gnomad NFE exome

AF:

0.00301

Gnomad OTH exome

AF:

0.00131

GnomAD4 exome

AF:

0.00192

AC:

2803

AN:

1461658

Hom.:

Cov.:

AF XY:

0.00185

AC XY:

1343

AN XY:

727114

show subpopulations

African (AFR)

AF:

0.000269

AC:

AN:

33480

American (AMR)

AF:

0.00103

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000116

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00111

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

0.00233

AC:

2594

AN:

1111886

Other (OTH)

AF:

0.00134

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

171

343

514

686

857

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

172

258

344

430

<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:

0.00121

AC:

185

AN:

152302

Hom.:

Cov.:

AF XY:

0.00114

AC XY:

AN XY:

74472

show subpopulations

African (AFR)

AF:

0.000385

AC:

AN:

41556

American (AMR)

AF:

0.00131

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.000207

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00122

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00196

AC:

133

AN:

68020

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00124

Hom.:

Bravo

AF:

0.00110

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (3)

not provided (2)

Hyperinsulinism due to glucokinase deficiency (1)

Maturity-onset diabetes of the young type 2 (1)

Permanent neonatal diabetes mellitus (1)

Transient Neonatal Diabetes, Recessive (1)

Type 2 diabetes mellitus (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.83

CADD

Benign

4.3

(source)

DANN

Benign

0.42

PhyloP100

1.6

Mutation Taster

=100/0

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over