rs139524121

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_000352.6(ABCC8):c.3203C>T(p.Thr1068Met) variant causes a missense change. The variant allele was found at a frequency of 0.000185 in 1,614,212 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T1068T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00091 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 1 hom. )

Consequence

ABCC8
NM_000352.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:4

Conservation

PhyloP100: 4.75

Publications

2 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 -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013801962).

BP6

Variant 11-17406748-G-A is Benign according to our data. Variant chr11-17406748-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 585344.

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.3203C>T	p.Thr1068Met	missense	Exon 26 of 39	NP_000343.2	Q09428-1
ABCC8	NM_001351295.2		c.3269C>T	p.Thr1090Met	missense	Exon 26 of 39	NP_001338224.1	A0A2R8Y4V0
ABCC8	NM_001287174.3		c.3206C>T	p.Thr1069Met	missense	Exon 26 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.3203C>T	p.Thr1068Met	missense	Exon 26 of 39	ENSP00000374467.4	Q09428-1
ABCC8	ENST00000644772.1		c.3269C>T	p.Thr1090Met	missense	Exon 26 of 39	ENSP00000494321.1	A0A2R8Y4V0
ABCC8	ENST00000302539.9	TSL:5	c.3206C>T	p.Thr1069Met	missense	Exon 26 of 39	ENSP00000303960.4	Q09428-2

Frequencies

GnomAD3 genomes

AF:

0.000913

AC:

139

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00302

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

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:

0.0000735

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000219

AC:

AN:

251452

AF XY:

0.000140

show subpopulations

Gnomad AFR exome

AF:

0.00277

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000109

AC:

160

AN:

1461886

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.00343

AC:

115

AN:

33480

American (AMR)

AF:

0.0000894

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000243

AC:

AN:

1112010

Other (OTH)

AF:

0.000199

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

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:

0.000913

AC:

139

AN:

152326

Hom.:

Cov.:

AF XY:

0.000752

AC XY:

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.00301

AC:

125

AN:

41566

American (AMR)

AF:

0.000523

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68032

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

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:

0.000356

Hom.:

Bravo

AF:

0.00122

ESP6500AA

AF:

0.00318

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000338

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

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 (4)

Hyperinsulinemic hypoglycemia, familial, 1 (2)

Diabetes mellitus, transient neonatal, 2 (1)

not specified (1)

Permanent neonatal diabetes mellitus (1)

Pulmonary arterial hypertension (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.60

Eigen

Benign

0.12

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.98

M_CAP

Uncertain

0.097

MetaRNN

Benign

0.014

MetaSVM

Uncertain

-0.083

MutationAssessor

Benign

1.4

PhyloP100

4.8

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.9

REVEL

Uncertain

0.39

Sift

Uncertain

0.015

Sift4G

Benign

0.091

Polyphen

0.010

Vest4

0.48

MVP

0.92

MPC

1.5

ClinPred

0.039

GERP RS

5.8

Varity_R

0.22

gMVP

0.58

Mutation Taster

=64/36

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.13

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