rs587783668

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM1

The NM_000525.4(KCNJ11):c.463G>A(p.Val155Met) variant causes a missense change. The variant allele was found at a frequency of 0.000018 in 1,613,712 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: 0.000019 ( 0 hom. )

Consequence

KCNJ11
NM_000525.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 4.81

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 5 uncertain in NM_000525.4

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
KCNJ11	NM_000525.4 linkuse as main transcript	c.463G>A	p.Val155Met	missense_variant	1/1	ENST00000339994.5
KCNJ11	NM_001166290.2 linkuse as main transcript	c.202G>A	p.Val68Met	missense_variant	2/2
KCNJ11	NM_001377296.1 linkuse as main transcript	c.202G>A	p.Val68Met	missense_variant	3/3
KCNJ11	NM_001377297.1 linkuse as main transcript	c.202G>A	p.Val68Met	missense_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCNJ11	ENST00000339994.5 linkuse as main transcript	c.463G>A	p.Val155Met	missense_variant	1/1		NM_000525.4	P1	Q14654-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152188

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:

0.0000120

AC:

AN:

250224

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135358

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1461524

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727066

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.0000234

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74340

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

Alfa

AF:

0.0000626

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Type 2 diabetes mellitus;C1864623:Diabetes mellitus, transient neonatal, 3;C2931833:Hyperinsulinemic hypoglycemia, familial, 2;C4225365:Maturity-onset diabetes of the young type 13;C5394296:Diabetes mellitus, permanent neonatal 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jul 07, 2021

- -

Diabetes mellitus

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Feb 08, 2013

- -

Maturity onset diabetes mellitus in young

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic

Mutations in KCNJ11 gene can cause decreased production and secretion of insulin. This can lead to MODY which may be responsive to oral sulfonylureas. It is also associated with Neonatal Diabetes.However, this particular variant (rs587783668) association with MODY remains uncertain. More studies are required to ascertain its role in MODY. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Sep 24, 2021

This sequence change replaces valine with methionine at codon 155 of the KCNJ11 protein (p.Val155Met). The valine residue is highly conserved and there is a small physicochemical difference between valine and methionine. This variant is present in population databases (rs587783668, ExAC 0.002%). This variant has not been reported in the literature in individuals with KCNJ11-related conditions. ClinVar contains an entry for this variant (Variation ID: 158675). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Permanent neonatal diabetes mellitus

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Apr 13, 2020

- -

Permanent neonatal diabetes mellitus;C1864623:Diabetes mellitus, transient neonatal, 3;C2931833:Hyperinsulinemic hypoglycemia, familial, 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Jan 19, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Pathogenic

0.15

Cadd

Uncertain

Dann

Uncertain

1.0

Eigen

Uncertain

0.49

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.85

D;.;T

M_CAP

Benign

0.073

MetaRNN

Uncertain

0.73

D;D;D

MetaSVM

Uncertain

0.68

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

-0.43

N;N;N

REVEL

Pathogenic

0.67

Sift

Uncertain

0.028

D;D;D

Sift4G

Uncertain

0.023

D;D;.

Vest4

0.74

MutPred

0.60

Gain of catalytic residue at I159 (P = 0.3246);.;.;

MVP

0.91

MPC

1.3

ClinPred

0.76

GERP RS

4.9

gMVP

0.94

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