11-17386071-T-C

Variant names:

• chr11-17386071-T-C
• rs5206
• NM_000525.4:c.*848A>G

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_Strong BP6 BS1 BS2

The NM_000525.4(KCNJ11):​c.*848A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00273 in 152,272 control chromosomes in the GnomAD database, including 2 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 0.0027 (2 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: KCNJ11 NM_000525.4 3_prime_UTR
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:2
• Conservation: PhyloP100: 0.218
• Publications: 5 publications found

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, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• 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: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• 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

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 11-17386071-T-C is Benign according to our data. Variant chr11-17386071-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 877518.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00273 (415/152272) while in subpopulation AFR AF = 0.0072 (299/41556). AF 95% confidence interval is 0.00652. There are 2 homozygotes in GnomAd4. There are 194 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 2 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000525.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNJ11	NM_000525.4	MANE Select	c.*848A>G		3_prime_UTR	Exon 1 of 1	NP_000516.3
	KCNJ11	NM_001166290.2		c.*848A>G		3_prime_UTR	Exon 2 of 2	NP_001159762.1	A0A804HHV7
	KCNJ11	NM_001377296.1		c.*848A>G		3_prime_UTR	Exon 3 of 3	NP_001364225.1	A0A804HHV7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNJ11	ENST00000339994.5	TSL:6 MANE Select	c.*848A>G		3_prime_UTR	Exon 1 of 1	ENSP00000345708.4	Q14654-1
	KCNJ11	ENST00000528731.1	TSL:1	c.*848A>G		3_prime_UTR	Exon 2 of 2	ENSP00000434755.1	Q14654-2
	KCNJ11	ENST00000948565.1		c.*848A>G		3_prime_UTR	Exon 2 of 2	ENSP00000618624.1

Frequencies

GnomAD3 genomes AF: 0.00273 AC: 416 AN: 152154 Hom.: 2 Cov.: 33

Gnomad AFR AF: 0.00719

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00170

Gnomad ASJ AF: 0.0132

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000942

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000412

Gnomad OTH AF: 0.00671

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 276 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 212

African (AFR) AF: 0.00 AC: 0 AN: 4

American (AMR) AF: 0.00 AC: 0 AN: 2

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 6

East Asian (EAS) AF: 0.00 AC: 0 AN: 6

South Asian (SAS) AF: 0.00 AC: 0 AN: 4

European-Finnish (FIN) AC: 0 AN: 0

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 238

Other (OTH) AF: 0.00 AC: 0 AN: 14

GnomAD4 genome AF: 0.00273 AC: 415 AN: 152272 Hom.: 2 Cov.: 33 AF XY: 0.00261 AC XY: 194 AN XY: 74452

African (AFR) AF: 0.00720 AC: 299 AN: 41556

American (AMR) AF: 0.00170 AC: 26 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.0132 AC: 46 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.0000942 AC: 1 AN: 10612

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.000412 AC: 28 AN: 68018

Other (OTH) AF: 0.00664 AC: 14 AN: 2108

Alfa AF: 0.000139 Hom.: 0

Bravo AF: 0.00319

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions as Germline

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	1	Diabetes mellitus, transient neonatal, 3 (1)
-	1	-	Hyperinsulinemic hypoglycemia, familial, 2 (1)
-	1	-	Maturity onset diabetes mellitus in young (1)
-	-	1	Maturity-onset diabetes of the young type 13 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	5.8
DANN	Benign	0.79
PhyloP100		0.22
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs5206; hg19: chr11-17407618;