chr11-17396945-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM1BP4_StrongBP6

The NM_000352.6(ABCC8):c.4090G>A(p.Val1364Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000997 in 1,614,194 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V1364F) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00045 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000063 ( 0 hom. )

Consequence

ABCC8
NM_000352.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:8B:3

Conservation

PhyloP100: 4.03

Publications

5 publications found

Variant links:

Genes affected

ABCC8 (HGNC:59): (ATP binding cassette subfamily C member 8) The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MRP subfamily which is involved in multi-drug resistance. This protein functions as a modulator of ATP-sensitive potassium channels and insulin release. Mutations in the ABCC8 gene and deficiencies in the encoded protein have been observed in patients with hyperinsulinemic hypoglycemia of infancy, an autosomal recessive disorder of unregulated and high insulin secretion. Mutations have also been associated with non-insulin-dependent diabetes mellitus type II, an autosomal dominant disease of defective insulin secretion. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jul 2020]

ABCC8 Gene-Disease associations (from GenCC):

hyperinsulinemic hypoglycemia, familial, 1
Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics, Illumina
diabetes mellitus, permanent neonatal 3
Inheritance: AR, SD, AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
familial hyperinsulinism
Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health
diabetes mellitus
Inheritance: SD Classification: DEFINITIVE Submitted by: Ambry Genetics
monogenic diabetes
Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
diabetes mellitus, noninsulin-dependent
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
diabetes mellitus, transient neonatal, 2
Inheritance: AD, Unknown Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
hypoglycemia, leucine-induced
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
transient neonatal diabetes mellitus
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
permanent neonatal diabetes mellitus
Inheritance: AR, AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
pulmonary arterial hypertension
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
autosomal dominant hyperinsulinism due to SUR1 deficiency
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
DEND syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
diazoxide-resistant focal hyperinsulinism due to SUR1 deficiency
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
maturity-onset diabetes of the young
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autosomal recessive hyperinsulinism due to SUR1 deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
type 2 diabetes mellitus
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ABCC8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 12 uncertain in NM_000352.6

BP4

Computational evidence support a benign effect (MetaRNN=0.050424337).

BP6

Variant 11-17396945-C-T is Benign according to our data. Variant chr11-17396945-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 303754.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000352.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ABCC8	NM_000352.6	MANE Select	c.4090G>A	p.Val1364Ile	missense	Exon 33 of 39	NP_000343.2	Q09428-1
ABCC8	NM_001351295.2		c.4156G>A	p.Val1386Ile	missense	Exon 33 of 39	NP_001338224.1	A0A2R8Y4V0
ABCC8	NM_001287174.3		c.4093G>A	p.Val1365Ile	missense	Exon 33 of 39	NP_001274103.1	Q09428-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ABCC8	ENST00000389817.8	TSL:1 MANE Select	c.4090G>A	p.Val1364Ile	missense	Exon 33 of 39	ENSP00000374467.4	Q09428-1
ABCC8	ENST00000644772.1		c.4156G>A	p.Val1386Ile	missense	Exon 33 of 39	ENSP00000494321.1	A0A2R8Y4V0
ABCC8	ENST00000302539.9	TSL:5	c.4093G>A	p.Val1365Ile	missense	Exon 33 of 39	ENSP00000303960.4	Q09428-2

Frequencies

GnomAD3 genomes

AF:

0.000434

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000135

AC:

AN:

251386

AF XY:

0.000140

show subpopulations

Gnomad AFR exome

AF:

0.00166

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000629

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.0000578

AC XY:

AN XY:

727236

show subpopulations

African (AFR)

AF:

0.00164

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000234

AC:

AN:

1111988

Other (OTH)

AF:

0.0000994

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.000453

AC:

AN:

152348

Hom.:

Cov.:

AF XY:

0.000523

AC XY:

AN XY:

74508

show subpopulations

African (AFR)

AF:

0.00152

AC:

AN:

41572

American (AMR)

AF:

0.00

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5184

South Asian (SAS)

AF:

0.000207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

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:

0.0000680

Hom.:

Bravo

AF:

0.000529

ESP6500AA

AF:

0.00205

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000173

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

not specified (2)

ABCC8-related disorder (1)

Diabetes mellitus, transient neonatal, 2 (1)

Hereditary hyperinsulinism (1)

Hyperinsulinemic hypoglycemia, familial, 1 (1)

Permanent neonatal diabetes mellitus (1)

Type 2 diabetes mellitus;C0271714:Leucine-induced hypoglycemia;C1835887:Diabetes mellitus, transient neonatal, 2;C2931832:Hyperinsulinemic hypoglycemia, familial, 1;C5394303:Diabetes mellitus, permanent neonatal 3 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.094

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Uncertain

-0.050

CADD

Benign

(source)

DANN

Benign

0.72

DEOGEN2

Uncertain

0.51

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.13

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.97

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.050

MetaSVM

Uncertain

0.0029

MutationAssessor

Benign

0.27

PhyloP100

4.0

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-0.63

REVEL

Uncertain

0.46

Sift

Benign

0.23

Sift4G

Benign

0.30

Polyphen

0.13

Vest4

0.37

MVP

0.76

MPC

0.63

ClinPred

0.021

GERP RS

4.8

Varity_R

0.27

gMVP

0.54

Mutation Taster

=51/49

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

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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