rs878854782

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PVS1_Moderate

The NM_020297.4(ABCC9):​c.1165-2A>T variant causes a splice acceptor, intron change involving the alteration of a conserved nucleotide. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000035 ( 0 hom., cov: 30)
Exomes 𝑓: 0.000013 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

ABCC9
NM_020297.4 splice_acceptor, intron

Scores

5
1
1
Splicing: ADA: 0.9999
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 8.00

Publications

0 publications found
Variant links:
Genes affected
ABCC9 (HGNC:60): (ATP binding cassette subfamily C member 9) 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 is thought to form ATP-sensitive potassium channels in cardiac, skeletal, and vascular and non-vascular smooth muscle. Protein structure suggests a role as the drug-binding channel-modulating subunit of the extra-pancreatic ATP-sensitive potassium channels. Mutations in this gene are associated with cardiomyopathy dilated type 1O. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2011]
ABCC9 Gene-Disease associations (from GenCC):
  • hypertrichotic osteochondrodysplasia Cantu type
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • dilated cardiomyopathy 1O
    Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: Illumina, Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • intellectual disability and myopathy syndrome
    Inheritance: AR Classification: MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • acromegaloid facial appearance syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • familial isolated dilated cardiomyopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • hypertrichosis-acromegaloid facial appearance syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Brugada syndrome
    Inheritance: AD Classification: LIMITED Submitted by: Genomics England PanelApp
  • dilated cardiomyopathy
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen
  • atrial fibrillation, familial, 12
    Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PVS1
Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.03354839 fraction of the gene. Cryptic splice site detected, with MaxEntScore 3.9, offset of 26, new splice context is: atttataataaaatccttAGgct. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ABCC9NM_020297.4 linkc.1165-2A>T splice_acceptor_variant, intron_variant Intron 9 of 39 ENST00000261200.9 NP_064693.2 O60706-2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ABCC9ENST00000261200.9 linkc.1165-2A>T splice_acceptor_variant, intron_variant Intron 9 of 39 5 NM_020297.4 ENSP00000261200.4 O60706-2

Frequencies

GnomAD3 genomes
AF:
0.0000350
AC:
4
AN:
114310
Hom.:
0
Cov.:
30
show subpopulations
Gnomad AFR
AF:
0.0000317
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.000166
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000381
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000550
AC:
1
AN:
181938
AF XY:
0.00
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:
0.0000114
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.0000135
AC:
19
AN:
1409142
Hom.:
0
Cov.:
30
AF XY:
0.0000114
AC XY:
8
AN XY:
701366
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000995
AC:
3
AN:
30152
American (AMR)
AF:
0.000167
AC:
6
AN:
35928
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24588
East Asian (EAS)
AF:
0.0000259
AC:
1
AN:
38668
South Asian (SAS)
AF:
0.0000251
AC:
2
AN:
79610
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
45594
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5258
European-Non Finnish (NFE)
AF:
0.00000367
AC:
4
AN:
1091314
Other (OTH)
AF:
0.0000517
AC:
3
AN:
58030
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.246
Heterozygous variant carriers
0
3
6
8
11
14
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.0000350
AC:
4
AN:
114310
Hom.:
0
Cov.:
30
AF XY:
0.0000365
AC XY:
2
AN XY:
54862
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000317
AC:
1
AN:
31572
American (AMR)
AF:
0.00
AC:
0
AN:
10584
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2996
East Asian (EAS)
AF:
0.00
AC:
0
AN:
4534
South Asian (SAS)
AF:
0.00
AC:
0
AN:
3688
European-Finnish (FIN)
AF:
0.000166
AC:
1
AN:
6040
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
242
European-Non Finnish (NFE)
AF:
0.0000381
AC:
2
AN:
52458
Other (OTH)
AF:
0.00
AC:
0
AN:
1540
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.275
Heterozygous variant carriers
0
1
1
2
2
3
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:
0.000186
Hom.:
0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.26
D
BayesDel_noAF
Pathogenic
0.14
CADD
Pathogenic
34
DANN
Uncertain
0.99
Eigen
Pathogenic
1.0
Eigen_PC
Pathogenic
0.85
FATHMM_MKL
Pathogenic
0.99
D
PhyloP100
8.0
GERP RS
5.5
Mutation Taster
=0/100
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.94
SpliceAI score (max)
0.97
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.41
Position offset: -28
DS_AL_spliceai
0.97
Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs878854782; hg19: chr12-22063248; API