7-87542067-G-A

Variant names:

• chr7-87542067-G-A
• rs4148736
• NM_001348946.2:c.2212-603C>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001348946.2(ABCB1):​c.2212-603C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.424 in 151,890 control chromosomes in the GnomAD database, including 13,773 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.42 (13773 hom., cov: 32)
• Consequence: ABCB1 NM_001348946.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0320
• Publications: 5 publications found

Genes affected

ABCB1 (HGNC:40): (ATP binding cassette subfamily B member 1) The membrane-associated 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 MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance. The protein encoded by this gene is an ATP-dependent drug efflux pump for xenobiotic compounds with broad substrate specificity. It is responsible for decreased drug accumulation in multidrug-resistant cells and often mediates the development of resistance to anticancer drugs. This protein also functions as a transporter in the blood-brain barrier. Mutations in this gene are associated with colchicine resistance and Inflammatory bowel disease 13. Alternative splicing and the use of alternative promoters results in multiple transcript variants. [provided by RefSeq, Feb 2017]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.445 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCB1	NM_001348946.2	c.2212-603C>T		intron_variant	Intron 17 of 27	ENST00000622132.5	NP_001335875.1
ABCB1	NM_001348945.2	c.2422-603C>T		intron_variant	Intron 21 of 31		NP_001335874.1
ABCB1	NM_000927.5	c.2212-603C>T		intron_variant	Intron 18 of 28		NP_000918.2
ABCB1	NM_001348944.2	c.2212-603C>T		intron_variant	Intron 19 of 29		NP_001335873.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCB1	ENST00000622132.5	c.2212-603C>T		intron_variant	Intron 17 of 27	1	NM_001348946.2	ENSP00000478255.1
ABCB1	ENST00000265724.8	c.2212-603C>T		intron_variant	Intron 18 of 28	1		ENSP00000265724.3
ABCB1	ENST00000543898.5	c.2020-603C>T		intron_variant	Intron 17 of 27	5		ENSP00000444095.1

Frequencies

GnomAD3 genomes AF: 0.424 AC: 64409 AN: 151772 Hom.: 13761 Cov.: 32

Gnomad AFR AF: 0.451

Gnomad AMI AF: 0.448

Gnomad AMR AF: 0.437

Gnomad ASJ AF: 0.469

Gnomad EAS AF: 0.307

Gnomad SAS AF: 0.240

Gnomad FIN AF: 0.426

Gnomad MID AF: 0.398

Gnomad NFE AF: 0.424

Gnomad OTH AF: 0.454

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.424 AC: 64467 AN: 151890 Hom.: 13773 Cov.: 32 AF XY: 0.421 AC XY: 31269 AN XY: 74228

African (AFR) AF: 0.451 AC: 18654 AN: 41406

American (AMR) AF: 0.437 AC: 6671 AN: 15254

Ashkenazi Jewish (ASJ) AF: 0.469 AC: 1625 AN: 3464

East Asian (EAS) AF: 0.307 AC: 1589 AN: 5172

South Asian (SAS) AF: 0.241 AC: 1161 AN: 4820

European-Finnish (FIN) AF: 0.426 AC: 4477 AN: 10518

Middle Eastern (MID) AF: 0.397 AC: 116 AN: 292

European-Non Finnish (NFE) AF: 0.424 AC: 28813 AN: 67940

Other (OTH) AF: 0.451 AC: 952 AN: 2112

Alfa AF: 0.422 Hom.: 22786

Bravo AF: 0.428

Asia WGS AF: 0.287 AC: 1003 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	3.2
DANN	Benign	0.65
PhyloP100		0.032
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs4148736; hg19: chr7-87171383;