rs750778014

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1PM2PP3_Strong

The NM_000525.4(KCNJ11):​c.575G>T​(p.Arg192Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000124 in 1,611,738 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R192H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

KCNJ11
NM_000525.4 missense

Scores

13
3
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.17

Publications

4 publications found
Variant links:
Genes affected
KCNJ11 (HGNC:6257): (potassium inwardly rectifying channel subfamily J member 11) Potassium channels are present in most mammalian cells, where they participate in a wide range of physiologic responses. The protein encoded by this gene is an integral membrane protein and inward-rectifier type potassium channel. The encoded protein, which has a greater tendency to allow potassium to flow into a cell rather than out of a cell, is controlled by G-proteins and is found associated with the sulfonylurea receptor SUR. Mutations in this gene are a cause of familial persistent hyperinsulinemic hypoglycemia of infancy (PHHI), an autosomal recessive disorder characterized by unregulated insulin secretion. Defects in this gene may also contribute to autosomal dominant non-insulin-dependent diabetes mellitus type II (NIDDM), transient neonatal diabetes mellitus type 3 (TNDM3), and permanent neonatal diabetes mellitus (PNDM). Multiple alternatively spliced transcript variants that encode different protein isoforms have been described for this gene. [provided by RefSeq, Oct 2009]
KCNJ11 Gene-Disease associations (from GenCC):
  • diabetes mellitus, transient neonatal, 3
    Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P
  • monogenic diabetes
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • hyperinsulinemic hypoglycemia, familial, 2
    Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Myriad Women’s Health, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
  • diabetes mellitus, noninsulin-dependent
    Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
  • diabetes mellitus, permanent neonatal 2
    Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
  • maturity-onset diabetes of the young type 13
    Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
  • autosomal dominant hyperinsulinism due to Kir6.2 deficiency
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • DEND syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • intermediate DEND syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • maturity-onset diabetes of the young
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • permanent neonatal diabetes mellitus
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • transient neonatal diabetes mellitus
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • autosomal recessive hyperinsulinism due to Kir6.2 deficiency
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • diazoxide-resistant focal hyperinsulinism due to Kir6.2 deficiency
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM1
In a topological_domain Cytoplasmic (size 223) in uniprot entity KCJ11_HUMAN there are 34 pathogenic changes around while only 11 benign (76%) in NM_000525.4
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.98

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KCNJ11NM_000525.4 linkc.575G>T p.Arg192Leu missense_variant Exon 1 of 1 ENST00000339994.5 NP_000516.3 Q14654-1B2RC52
KCNJ11NM_001166290.2 linkc.314G>T p.Arg105Leu missense_variant Exon 2 of 2 NP_001159762.1 Q14654-2A0A804HHV7
KCNJ11NM_001377296.1 linkc.314G>T p.Arg105Leu missense_variant Exon 3 of 3 NP_001364225.1
KCNJ11NM_001377297.1 linkc.314G>T p.Arg105Leu missense_variant Exon 2 of 2 NP_001364226.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KCNJ11ENST00000339994.5 linkc.575G>T p.Arg192Leu missense_variant Exon 1 of 1 6 NM_000525.4 ENSP00000345708.4 Q14654-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152134
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000404
AC:
1
AN:
247286
AF XY:
0.00000746
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS 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:
6.85e-7
AC:
1
AN:
1459604
Hom.:
0
Cov.:
67
AF XY:
0.00000138
AC XY:
1
AN XY:
726080
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44680
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39696
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86210
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51524
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111766
Other (OTH)
AF:
0.00
AC:
0
AN:
60352
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152134
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74298
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41422
American (AMR)
AF:
0.00
AC:
0
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5176
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68024
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.725
Heterozygous variant carriers
0
0
1
1
2
2
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:
0.00
Hom.:
0
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.83
BayesDel_addAF
Pathogenic
0.54
D
BayesDel_noAF
Pathogenic
0.54
CADD
Uncertain
25
DANN
Uncertain
1.0
Eigen
Pathogenic
0.85
Eigen_PC
Pathogenic
0.78
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Pathogenic
1.0
D;.;D
M_CAP
Pathogenic
0.61
D
MetaRNN
Pathogenic
0.98
D;D;D
MetaSVM
Pathogenic
1.1
D
PhyloP100
6.2
PrimateAI
Uncertain
0.71
T
PROVEAN
Pathogenic
-6.9
D;D;D
REVEL
Pathogenic
0.95
Sift
Pathogenic
0.0
D;D;D
Sift4G
Pathogenic
0.0010
D;D;.
Vest4
0.83
MutPred
0.82
Loss of MoRF binding (P = 0.0039);.;.;
MVP
0.99
MPC
1.8
ClinPred
1.0
D
GERP RS
5.2
gMVP
0.99
Mutation Taster
=6/94
disease causing

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

Other links and lift over

dbSNP: rs750778014; hg19: chr11-17409064; API