7-99735244-G-T

Variant names:

• chr7-99735244-G-T
• rs45496695
• XR_007059988.1:n.1429-1448G>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The XR_927402.3(ZSCAN25):​n.1456-1448G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000504 in 1,090,480 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000049 (0 hom.)
• Consequence: ZSCAN25 XR_927402.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.327
• Publications: 2 publications found

Genes affected

ZSCAN25 (HGNC:21961): (zinc finger and SCAN domain containing 25) This gene encodes a protein that bears some similarity to zinc finger proteins, which are involved in DNA binding and protein-protein interactions. Multiple alternatively spliced transcript variants have been identified, but the full-length nature for most of them has not been determined. [provided by RefSeq, Jul 2008]

CYP3A7 (HGNC:2640): (cytochrome P450 family 3 subfamily A member 7) This gene encodes a member of the cytochrome P450 superfamily of enzymes, which participate in drug metabolism and the synthesis of cholesterol, steroids and other lipids. This enzyme hydroxylates testosterone and dehydroepiandrosterone 3-sulphate, which is involved in the formation of estriol during pregnancy. This gene is part of a cluster of related genes on chromosome 7q21.1. Naturally-occurring readthrough transcription occurs between this gene and the downstream CYP3A51P pseudogene and is represented by GeneID:100861540. [provided by RefSeq, Jan 2015]

CYP3A7-CYP3A51P (HGNC:51504): (CYP3A7-CYP3A51P readthrough) This locus represents readthrough transcription between the neighboring CYP3A7 (cytochrome P450, family 3, subfamily A, polypeptide 7) and CYP3A51P (cytochrome P450, family 3, subfamily A, polypeptide 51, pseudogene) genes, which are members of the CYP3A gene cluster on chromosome 7. The downstream pseudogene is not known to be independently transcribed. The readthrough transcript includes CYP3A7 exons 1-13 and exons 2 and 13 of the pseudogene. It encodes a CYP3A isoform with a novel C-terminus. This isoform is only expressed in alleles containing a T nucleotide at the -6 position of a splice acceptor in the pseudogene, which enables correct splicing of the upstream CYP3A7 exons to the pseudogene exons. It should be noted that the reference genome sequence represents the CYP3A7_39256 T->A allele, and thus this haplotype is unlikely to produce the readthrough transcript. [provided by RefSeq, Jan 2015]

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP3A7	NM_000765.5	c.-151C>A		upstream_gene_variant		ENST00000336374.4	NP_000756.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP3A7	ENST00000336374.4	c.-151C>A		upstream_gene_variant		1	NM_000765.5	ENSP00000337450.2
CYP3A7-CYP3A51P	ENST00000620220.6	c.-151C>A		upstream_gene_variant		1		ENSP00000479282.3
CYP3A7-CYP3A51P	ENST00000611620.4	c.-151C>A		upstream_gene_variant		5		ENSP00000480571.1
CYP3A7	ENST00000467776.1	n.-48C>A		upstream_gene_variant		3

Frequencies

GnomAD3 genomes AF: 0.0000591 AC: 9 AN: 152198 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000327

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000770

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000490 AC: 46 AN: 938282 Hom.: 0 Cov.: 12 AF XY: 0.0000460 AC XY: 22 AN XY: 478430

African (AFR) AF: 0.00 AC: 0 AN: 22596

American (AMR) AF: 0.00 AC: 0 AN: 34018

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 21414

East Asian (EAS) AF: 0.000398 AC: 13 AN: 32644

South Asian (SAS) AF: 0.0000146 AC: 1 AN: 68704

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 36982

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4638

European-Non Finnish (NFE) AF: 0.00000296 AC: 2 AN: 674696

Other (OTH) AF: 0.000704 AC: 30 AN: 42590

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152198 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74356

African (AFR) AF: 0.00 AC: 0 AN: 41434

American (AMR) AF: 0.000327 AC: 5 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000770 AC: 4 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000718

Asia WGS AF: 0.00173 AC: 6 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	1.6
DANN	Benign	0.69
PhyloP100		-0.33
PromoterAI		-0.24	Neutral

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs45496695; hg19: chr7-99332867;