rs7899457

Variant names:

• chr10-99845746-C-T
• rs7899457
• NM_000392.5:c.4110C>T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BA1

The NM_000392.5(ABCC2):​c.4110C>T​(p.Leu1370Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0056 in 1,613,268 control chromosomes in the GnomAD database, including 439 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.030 (221 hom., cov: 32)
  • Exomes 𝑓: 0.0031 (218 hom.)
• Consequence: ABCC2 NM_000392.5 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.0220

Genes affected

ABCC2 (HGNC:53): (ATP binding cassette subfamily C member 2) 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 expressed in the canalicular (apical) part of the hepatocyte and functions in biliary transport. Substrates include anticancer drugs such as vinblastine; therefore, this protein appears to contribute to drug resistance in mammalian cells. Several different mutations in this gene have been observed in patients with Dubin-Johnson syndrome (DJS), an autosomal recessive disorder characterized by conjugated hyperbilirubinemia. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.49).
• BP6: Variant 10-99845746-C-T is Benign according to our data. Variant chr10-99845746-C-T is described in ClinVar as [Benign]. Clinvar id is 298473.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.022 with no splicing effect.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.1 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCC2	NM_000392.5	c.4110C>T	p.Leu1370Leu	synonymous_variant	Exon 29 of 32	ENST00000647814.1	NP_000383.2
ABCC2	XM_006717630.4	c.3414C>T	p.Leu1138Leu	synonymous_variant	Exon 24 of 27		XP_006717693.1
ABCC2	XR_945604.4	n.4256C>T		non_coding_transcript_exon_variant	Exon 29 of 30

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCC2	ENST00000647814.1	c.4110C>T	p.Leu1370Leu	synonymous_variant	Exon 29 of 32		NM_000392.5	ENSP00000497274.1
ABCC2	ENST00000649459.1	n.458C>T		non_coding_transcript_exon_variant	Exon 3 of 5
ABCC2	ENST00000648523.1	n.-4C>T		upstream_gene_variant				ENSP00000497778.1

Frequencies

GnomAD3 genomes AF: 0.0297 AC: 4504 AN: 151698 Hom.: 220 Cov.: 32

Gnomad AFR AF: 0.103

Gnomad AMI AF: 0.00548

Gnomad AMR AF: 0.0121

Gnomad ASJ AF: 0.000577

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000397

Gnomad OTH AF: 0.0187

GnomAD3 exomes AF: 0.00766 AC: 1919 AN: 250628 Hom.: 83 AF XY: 0.00518 AC XY: 702 AN XY: 135434

Gnomad AFR exome AF: 0.101

Gnomad AMR exome AF: 0.00571

Gnomad ASJ exome AF: 0.000498

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000263

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000397

Gnomad OTH exome AF: 0.00473

GnomAD4 exome AF: 0.00310 AC: 4529 AN: 1461452 Hom.: 218 Cov.: 32 AF XY: 0.00262 AC XY: 1907 AN XY: 726940

Gnomad4 AFR exome AF: 0.106

Gnomad4 AMR exome AF: 0.00638

Gnomad4 ASJ exome AF: 0.000345

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000279

Gnomad4 FIN exome AF: 0.0000750

Gnomad4 NFE exome AF: 0.000180

Gnomad4 OTH exome AF: 0.00720

GnomAD4 genome AF: 0.0297 AC: 4512 AN: 151816 Hom.: 221 Cov.: 32 AF XY: 0.0278 AC XY: 2066 AN XY: 74196

Gnomad4 AFR AF: 0.103

Gnomad4 AMR AF: 0.0121

Gnomad4 ASJ AF: 0.000577

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000397

Gnomad4 OTH AF: 0.0185

Alfa AF: 0.00652 Hom.: 103

Bravo AF: 0.0342

Asia WGS AF: 0.00462 AC: 16 AN: 3478

EpiCase AF: 0.000327

EpiControl AF: 0.000356

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Jun 09, 2021

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

ABCC2-related disorder Benign:1

Nov 25, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Dubin-Johnson syndrome Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.49
CADD	Benign	8.2
DANN	Benign	0.86

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs7899457; hg19: chr10-101605503;