chr7-87645791-C-T

Position:

• chr7-87645791-C-T

Variant summary

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

The NM_001134405.2(RUNDC3B):​c.123-5031C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0481 in 152,158 control chromosomes in the GnomAD database, including 257 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 0.048 (257 hom., cov: 32)
• Consequence: RUNDC3B NM_001134405.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.115

Genes affected

RUNDC3B (HGNC:30286): (RUN domain containing 3B)

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

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.0823 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RUNDC3B	NM_001134405.2	c.123-5031C>T		intron_variant		ENST00000394654.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RUNDC3B	ENST00000394654.4	c.123-5031C>T		intron_variant		2	NM_001134405.2	P1

Frequencies

GnomAD3 genomes AF: 0.0482 AC: 7321 AN: 152040 Hom.: 257 Cov.: 32

Gnomad AFR AF: 0.0804

Gnomad AMI AF: 0.0592

Gnomad AMR AF: 0.0564

Gnomad ASJ AF: 0.0392

Gnomad EAS AF: 0.0896

Gnomad SAS AF: 0.0356

Gnomad FIN AF: 0.0370

Gnomad MID AF: 0.0223

Gnomad NFE AF: 0.0265

Gnomad OTH AF: 0.0516

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

GnomAD4 genome AF: 0.0481 AC: 7319 AN: 152158 Hom.: 257 Cov.: 32 AF XY: 0.0485 AC XY: 3609 AN XY: 74372

Gnomad4 AFR AF: 0.0803

Gnomad4 AMR AF: 0.0563

Gnomad4 ASJ AF: 0.0392

Gnomad4 EAS AF: 0.0890

Gnomad4 SAS AF: 0.0352

Gnomad4 FIN AF: 0.0370

Gnomad4 NFE AF: 0.0265

Gnomad4 OTH AF: 0.0506

Alfa AF: 0.0324 Hom.: 119

Bravo AF: 0.0528

Asia WGS AF: 0.0590 AC: 204 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	4.1
DANN	Benign	0.62

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: rs10275831; hg19: chr7-87275107;