rs4148149

Positions:

• chr4-88141133-T-G

Variant summary

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

The NM_004827.3(ABCG2):​c.-19-1119A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.416 in 151,932 control chromosomes in the GnomAD database, including 13,886 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 (13886 hom., cov: 31)
• Consequence: ABCG2 NM_004827.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.12

Genes affected

ABCG2 (HGNC:74): (ATP binding cassette subfamily G member 2 (JR blood group)) The membrane-associated protein encoded by this gene is included in 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 White subfamily. Alternatively referred to as a breast cancer resistance protein, this protein functions as a xenobiotic transporter which may play a major role in multi-drug resistance. It likely serves as a cellular defense mechanism in response to mitoxantrone and anthracycline exposure. Significant expression of this protein has been observed in the placenta, which may suggest a potential role for this molecule in placenta tissue. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.0).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.552 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCG2	NM_004827.3	c.-19-1119A>C		intron_variant		ENST00000237612.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCG2	ENST00000237612.8	c.-19-1119A>C		intron_variant		1	NM_004827.3	P1

Frequencies

GnomAD3 genomes AF: 0.416 AC: 63143 AN: 151814 Hom.: 13859 Cov.: 31

Gnomad AFR AF: 0.558

Gnomad AMI AF: 0.280

Gnomad AMR AF: 0.410

Gnomad ASJ AF: 0.298

Gnomad EAS AF: 0.286

Gnomad SAS AF: 0.409

Gnomad FIN AF: 0.472

Gnomad MID AF: 0.377

Gnomad NFE AF: 0.342

Gnomad OTH AF: 0.376

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

GnomAD4 genome AF: 0.416 AC: 63214 AN: 151932 Hom.: 13886 Cov.: 31 AF XY: 0.424 AC XY: 31492 AN XY: 74254

Gnomad4 AFR AF: 0.558

Gnomad4 AMR AF: 0.409

Gnomad4 ASJ AF: 0.298

Gnomad4 EAS AF: 0.285

Gnomad4 SAS AF: 0.409

Gnomad4 FIN AF: 0.472

Gnomad4 NFE AF: 0.342

Gnomad4 OTH AF: 0.381

Alfa AF: 0.352 Hom.: 19658

Bravo AF: 0.418

Asia WGS AF: 0.396 AC: 1376 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.35
DANN	Benign	0.37

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: rs4148149; hg19: chr4-89062285;