rs33270

chr12-30632825-G-Achr12-30632825-G-C

Variant summary

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

The NM_006390.4(IPO8):c.2900-814C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.914 in 152,254 control chromosomes in the GnomAD database, including 63,816 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 0.91 (63816 hom., cov: 32)
• Consequence: IPO8 NM_006390.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0630

Genes affected

IPO8 (HGNC:9853): (importin 8) The importin-alpha/beta complex and the GTPase Ran mediate nuclear import of proteins with a classical nuclear localization signal. The protein encoded by this gene is a member of a class of approximately 20 potential Ran targets that share a sequence motif related to the Ran-binding site of importin-beta. This protein binds to the nuclear pore complex and, along with RanGTP and RANBP1, inhibits the GAP stimulation of the Ran GTPase. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.99).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.976 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IPO8	NM_006390.4	c.2900-814C>T		intron_variant		ENST00000256079.9
IPO8	NM_001190995.2	c.2285-814C>T		intron_variant
IPO8	XM_017018691.3	c.2849-814C>T		intron_variant
IPO8	XM_017018692.2	c.2714-814C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IPO8	ENST00000256079.9	c.2900-814C>T		intron_variant		1	NM_006390.4	P1
IPO8	ENST00000535598.1	c.373-814C>T		intron_variant		3
IPO8	ENST00000544829.5	c.2285-814C>T		intron_variant		2

Frequencies

GnomAD3 genomes AF: 0.914 AC: 139059 AN: 152136 Hom.: 63749 Cov.: 32

Gnomad AFR AF: 0.978

Gnomad AMI AF: 0.952

Gnomad AMR AF: 0.928

Gnomad ASJ AF: 0.918

Gnomad EAS AF: 0.999

Gnomad SAS AF: 0.975

Gnomad FIN AF: 0.872

Gnomad MID AF: 0.870

Gnomad NFE AF: 0.867

Gnomad OTH AF: 0.905

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

GnomAD4 genome AF: 0.914 AC: 139187 AN: 152254 Hom.: 63816 Cov.: 32 AF XY: 0.917 AC XY: 68251 AN XY: 74438

Gnomad4 AFR AF: 0.978

Gnomad4 AMR AF: 0.928

Gnomad4 ASJ AF: 0.918

Gnomad4 EAS AF: 0.999

Gnomad4 SAS AF: 0.975

Gnomad4 FIN AF: 0.872

Gnomad4 NFE AF: 0.867

Gnomad4 OTH AF: 0.907

Alfa AF: 0.890 Hom.: 29791

Bravo AF: 0.919

Asia WGS AF: 0.984 AC: 3420 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.99
Cadd	Benign	3.8
Dann	Benign	0.71

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: rs33270; hg19: chr12-30785759;