rs4148735

Variant names:

• chr7-87543565-C-T
• rs4148735
• NM_001348946.2:c.2211+564G>A

Variant summary

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

The NM_001348946.2(ABCB1):​c.2211+564G>A 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 151,922 control chromosomes in the GnomAD database, including 13,779 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 (13779 hom., cov: 32)
• Consequence: ABCB1 NM_001348946.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0350
• Publications: 8 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=-0.88).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.445 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001348946.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCB1	NM_001348946.2	MANE Select	c.2211+564G>A		intron	N/A	NP_001335875.1	P08183-1
	ABCB1	NM_001348945.2		c.2421+564G>A		intron	N/A	NP_001335874.1
	ABCB1	NM_000927.5		c.2211+564G>A		intron	N/A	NP_000918.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCB1	ENST00000622132.5	TSL:1 MANE Select	c.2211+564G>A		intron	N/A	ENSP00000478255.1	P08183-1
	ABCB1	ENST00000265724.8	TSL:1	c.2211+564G>A		intron	N/A	ENSP00000265724.3	P08183-1
	ABCB1	ENST00000890305.1		c.2211+564G>A		intron	N/A	ENSP00000560364.1

Frequencies

GnomAD3 genomes AF: 0.424 AC: 64413 AN: 151804 Hom.: 13767 Cov.: 32

Gnomad AFR AF: 0.451

Gnomad AMI AF: 0.447

Gnomad AMR AF: 0.437

Gnomad ASJ AF: 0.468

Gnomad EAS AF: 0.306

Gnomad SAS AF: 0.240

Gnomad FIN AF: 0.426

Gnomad MID AF: 0.402

Gnomad NFE AF: 0.424

Gnomad OTH AF: 0.453

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

GnomAD4 genome AF: 0.424 AC: 64471 AN: 151922 Hom.: 13779 Cov.: 32 AF XY: 0.421 AC XY: 31276 AN XY: 74252

African (AFR) AF: 0.451 AC: 18659 AN: 41416

American (AMR) AF: 0.438 AC: 6677 AN: 15260

Ashkenazi Jewish (ASJ) AF: 0.468 AC: 1619 AN: 3462

East Asian (EAS) AF: 0.306 AC: 1580 AN: 5162

South Asian (SAS) AF: 0.241 AC: 1158 AN: 4812

European-Finnish (FIN) AF: 0.426 AC: 4491 AN: 10540

Middle Eastern (MID) AF: 0.401 AC: 118 AN: 294

European-Non Finnish (NFE) AF: 0.424 AC: 28815 AN: 67958

Other (OTH) AF: 0.449 AC: 947 AN: 2108

Alfa AF: 0.422 Hom.: 23345

Bravo AF: 0.428

Asia WGS AF: 0.287 AC: 1003 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	6.3
DANN	Benign	0.67
PhyloP100		-0.035
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs4148735; hg19: chr7-87172881;