rs200891785

chr12-21882792-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 1P and 8B. PP2 BP6_Very_Strong

The NM_020297.4(ABCC9):c.1993G>A(p.Ala665Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000304 in 1,613,196 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000046 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000029 (0 hom.)
• Consequence: ABCC9 NM_020297.4 missense
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -4.51

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]

(HGNC:):

ACMG classification

Verdict is Benign. Variant got -7 ACMG points.

• PP2: Missense variant where missense usually causes diseases, ABCC9
• BP6: Variant 12-21882792-C-T is Benign according to our data. Variant chr12-21882792-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 533277.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCC9	NM_020297.4	c.1993G>A	p.Ala665Thr	missense_variant	16/40	ENST00000261200.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCC9	ENST00000261200.9	c.1993G>A	p.Ala665Thr	missense_variant	16/40	5	NM_020297.4	P4
	ENST00000539874.1	n.413-5056C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.0000460 AC: 7 AN: 152118 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000966

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000716 AC: 18 AN: 251332 Hom.: 0 AF XY: 0.0000957 AC XY: 13 AN XY: 135828

Gnomad AFR exome AF: 0.000123

Gnomad AMR exome AF: 0.000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.000131

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000287 AC: 42 AN: 1461078 Hom.: 0 Cov.: 30 AF XY: 0.0000358 AC XY: 26 AN XY: 726926

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.000162

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.00000990

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome AF: 0.0000460 AC: 7 AN: 152118 Hom.: 0 Cov.: 33 AF XY: 0.0000404 AC XY: 3 AN XY: 74300

Gnomad4 AFR AF: 0.0000966

Gnomad4 AMR AF: 0.000131

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000485 Hom.: 0

Bravo AF: 0.0000340

ExAC AF: 0.0000659 AC: 8

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Dilated cardiomyopathy 1O Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Feb 01, 2024

- -

Cardiovascular phenotype Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 14, 2023

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.061
BayesDel_addAF	Benign	-0.46	T
BayesDel_noAF	Benign	-0.59
Cadd	Benign	0.0040
Dann	Benign	0.83
Eigen	Benign	-2.1
Eigen_PC	Benign	-2.1
FATHMM_MKL	Benign	0.0065	N
LIST_S2	Benign	0.41	T;T
M_CAP	Pathogenic	0.75	D
MetaRNN	Uncertain	0.61	D;D
MetaSVM	Benign	-0.51	T
MutationAssessor	Benign	-0.34	N;N
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.22	T
PROVEAN	Benign	0.17	N;N
REVEL	Pathogenic	0.65
Sift	Benign	0.40	T;T
Sift4G	Benign	0.56	T;T
Polyphen		0.0	B;B
Vest4		0.63
MVP		0.37
MPC		0.65
ClinPred		0.016	T
GERP RS		-11
Varity_R		0.025
gMVP		0.19

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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

Other links and lift over

dbSNP: rs200891785; hg19: chr12-22035726; COSMIC: COSV53961570;