chr12-21801025-A-G

Variant names:

• chr12-21801025-A-G
• rs114906131
• NM_020297.4:c.*19T>C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_020297.4(ABCC9):​c.*19T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00163 in 1,613,438 control chromosomes in the GnomAD database, including 39 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.0085 (19 hom., cov: 32)
  • Exomes 𝑓: 0.00091 (20 hom.)
• Consequence: ABCC9 NM_020297.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:4
• Conservation: PhyloP100: -1.53

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]

LOC105369689 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP6: Variant 12-21801025-A-G is Benign according to our data. Variant chr12-21801025-A-G is described in ClinVar as [Benign]. Clinvar id is 379564.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr12-21801025-A-G is described in Lovd as [Benign]. Variant chr12-21801025-A-G is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00854 (1300/152312) while in subpopulation AFR AF= 0.0299 (1243/41560). AF 95% confidence interval is 0.0285. There are 19 homozygotes in gnomad4. There are 606 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 19 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCC9	NM_020297.4	c.*19T>C		3_prime_UTR_variant	Exon 40 of 40	ENST00000261200.9	NP_064693.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCC9	ENST00000261200	c.*19T>C		3_prime_UTR_variant	Exon 40 of 40	5	NM_020297.4	ENSP00000261200.4

Frequencies

GnomAD3 genomes AF: 0.00852 AC: 1296 AN: 152194 Hom.: 19 Cov.: 32

Gnomad AFR AF: 0.0299

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00255

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: 0.00621

GnomAD3 exomes AF: 0.00226 AC: 567 AN: 250908 Hom.: 9 AF XY: 0.00154 AC XY: 209 AN XY: 135618

Gnomad AFR exome AF: 0.0311

Gnomad AMR exome AF: 0.00119

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000106

Gnomad OTH exome AF: 0.00114

GnomAD4 exome AF: 0.000910 AC: 1329 AN: 1461126 Hom.: 20 Cov.: 31 AF XY: 0.000744 AC XY: 541 AN XY: 726872

Gnomad4 AFR exome AF: 0.0310

Gnomad4 AMR exome AF: 0.00150

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000464

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000899

Gnomad4 OTH exome AF: 0.00199

GnomAD4 genome AF: 0.00854 AC: 1300 AN: 152312 Hom.: 19 Cov.: 32 AF XY: 0.00814 AC XY: 606 AN XY: 74484

Gnomad4 AFR AF: 0.0299

Gnomad4 AMR AF: 0.00255

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00615

Alfa AF: 0.00234 Hom.: 3

Bravo AF: 0.00996

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:3

Nov 21, 2016

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

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Clinical Genetics, Academic Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided Benign:1

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Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.081
DANN	Benign	0.49

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs114906131; hg19: chr12-21953959;