rs10267228

Variant names:

• chr7-99766190-G-C
• rs10267228
• NM_017460.6:c.865+187C>G

Variant summary

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

The NM_017460.6(CYP3A4):​c.865+187C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.059 in 152,036 control chromosomes in the GnomAD database, including 840 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 0.059 (840 hom., cov: 32)
• Consequence: CYP3A4 NM_017460.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.474

Genes affected

CYP3A4 (HGNC:2637): (cytochrome P450 family 3 subfamily A member 4) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases that catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and its expression is induced by glucocorticoids and some pharmacological agents. This enzyme is involved in the metabolism of approximately half the drugs in use today, including acetaminophen, codeine, cyclosporin A, diazepam, erythromycin, and chloroquine. The enzyme also metabolizes some steroids and carcinogens. This gene is part of a cluster of cytochrome P450 genes on chromosome 7q21.1. Previously another CYP3A gene, CYP3A3, was thought to exist; however, it is now thought that this sequence represents a transcript variant of CYP3A4. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Benign. Variant got -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 = 0.198 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP3A4	NM_017460.6	c.865+187C>G		intron_variant	Intron 9 of 12	ENST00000651514.1	NP_059488.2
CYP3A4	NM_001202855.3	c.862+187C>G		intron_variant	Intron 9 of 12		NP_001189784.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP3A4	ENST00000651514.1	c.865+187C>G		intron_variant	Intron 9 of 12		NM_017460.6	ENSP00000498939.1

Frequencies

GnomAD3 genomes AF: 0.0587 AC: 8921 AN: 151918 Hom.: 830 Cov.: 32

Gnomad AFR AF: 0.201

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0282

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000387

Gnomad SAS AF: 0.000623

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0316

Gnomad NFE AF: 0.00134

Gnomad OTH AF: 0.0445

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

GnomAD4 genome AF: 0.0590 AC: 8963 AN: 152036 Hom.: 840 Cov.: 32 AF XY: 0.0565 AC XY: 4199 AN XY: 74322

Gnomad4 AFR AF: 0.201

Gnomad4 AMR AF: 0.0281

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000387

Gnomad4 SAS AF: 0.000416

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00134

Gnomad4 OTH AF: 0.0440

Alfa AF: 0.0446 Hom.: 60

Bravo AF: 0.0665

Asia WGS AF: 0.0170 AC: 61 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	11
DANN	Benign	0.38

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: rs10267228; hg19: chr7-99363813;