rs4148744

chr7-87521458-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001348946.2(ABCB1):c.2686-582C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0985 in 711,330 control chromosomes in the GnomAD database, including 7,919 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 0.15 (3273 hom., cov: 32)
  • Exomes 𝑓: 0.084 (4646 hom.)
• Consequence: ABCB1 NM_001348946.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.23

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]

HNRNPA1P9 (HGNC:39127): (heterogeneous nuclear ribonucleoprotein A1 pseudogene 9)

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.359 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCB1	NM_001348946.2	c.2686-582C>T		intron_variant		ENST00000622132.5
ABCB1	NM_000927.5	c.2686-582C>T		intron_variant
ABCB1	NM_001348944.2	c.2686-582C>T		intron_variant
ABCB1	NM_001348945.2	c.2896-582C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCB1	ENST00000622132.5	c.2686-582C>T		intron_variant		1	NM_001348946.2	P1
HNRNPA1P9	ENST00000450624.1			upstream_gene_variant

Frequencies

GnomAD3 genomes AF: 0.150 AC: 22808 AN: 151934 Hom.: 3262 Cov.: 32

Gnomad AFR AF: 0.349

Gnomad AMI AF: 0.0683

Gnomad AMR AF: 0.124

Gnomad ASJ AF: 0.0975

Gnomad EAS AF: 0.373

Gnomad SAS AF: 0.0714

Gnomad FIN AF: 0.0644

Gnomad MID AF: 0.0696

Gnomad NFE AF: 0.0416

Gnomad OTH AF: 0.132

GnomAD4 exome AF: 0.0844 AC: 47186 AN: 559278 Hom.: 4646 Cov.: 0 AF XY: 0.0789 AC XY: 23979 AN XY: 303994

Gnomad4 AFR exome AF: 0.349

Gnomad4 AMR exome AF: 0.150

Gnomad4 ASJ exome AF: 0.0872

Gnomad4 EAS exome AF: 0.376

Gnomad4 SAS exome AF: 0.0597

Gnomad4 FIN exome AF: 0.0589

Gnomad4 NFE exome AF: 0.0398

Gnomad4 OTH exome AF: 0.0925

GnomAD4 genome AF: 0.150 AC: 22846 AN: 152052 Hom.: 3273 Cov.: 32 AF XY: 0.150 AC XY: 11186 AN XY: 74332

Gnomad4 AFR AF: 0.349

Gnomad4 AMR AF: 0.125

Gnomad4 ASJ AF: 0.0975

Gnomad4 EAS AF: 0.373

Gnomad4 SAS AF: 0.0707

Gnomad4 FIN AF: 0.0644

Gnomad4 NFE AF: 0.0416

Gnomad4 OTH AF: 0.135

Alfa AF: 0.104 Hom.: 226

Bravo AF: 0.168

Asia WGS AF: 0.212 AC: 734 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	2.5
Dann	Benign	0.78

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

Publications

LitVar

Other links and lift over

dbSNP: rs4148744; hg19: chr7-87150774;