Variant rs184248834 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_001111125.3(IQSEC2):c.2890-6G>A variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000415 in 1,205,627 control chromosomes in the GnomAD database, including 1 homozygotes. There are 11 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., 10 hem., cov: 22)

Exomes 𝑓: 0.000021 ( 1 hom. 1 hem. )

Consequence

IQSEC2
NM_001111125.3 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.0001083

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -3.93

Variant links:

Genes affected

IQSEC2 (HGNC:29059): (IQ motif and Sec7 domain ArfGEF 2) This gene encodes a guanine nucleotide exchange factor for the ARF family of small GTP-binding proteins. The encoded protein is a component of the postsynaptic density at excitatory synapses, and may play a critical role in cytoskeletal and synaptic organization through the activation of selected ARF substrates including ARF1 and ARF6. Mutations in this gene have been implicated in nonsyndromic X-linked cognitive disability. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Aug 2011]

IQSEC2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.86).

BP6

Variant X-53241915-C-T is Benign according to our data. Variant chrX-53241915-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 538616.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Hemizygotes in GnomAd at 10 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IQSEC2	NM_001111125.3 linkuse as main transcript	c.2890-6G>A		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000642864.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IQSEC2	ENST00000642864.1 linkuse as main transcript	c.2890-6G>A		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant			NM_001111125.3	P1	Q5JU85-2

Frequencies

GnomAD3 genomes

AF:

0.000241

AC:

AN:

111857

Hom.:

Cov.:

AF XY:

0.000294

AC XY:

AN XY:

34015

show subpopulations

Gnomad AFR

AF:

0.000749

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000377

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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

GnomAD3 exomes

AF:

0.0000466

AC:

AN:

171721

Hom.:

AF XY:

0.0000174

AC XY:

AN XY:

57569

show subpopulations

Gnomad AFR exome

AF:

0.000487

Gnomad AMR exome

AF:

0.0000376

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000234

GnomAD4 exome

AF:

0.0000210

AC:

AN:

1093715

Hom.:

Cov.:

AF XY:

0.00000278

AC XY:

AN XY:

359559

show subpopulations

Gnomad4 AFR exome

AF:

0.000456

Gnomad4 AMR exome

AF:

0.0000862

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.000152

GnomAD4 genome

AF:

0.000241

AC:

AN:

111912

Hom.:

Cov.:

AF XY:

0.000293

AC XY:

AN XY:

34080

show subpopulations

Gnomad4 AFR

AF:

0.000747

Gnomad4 AMR

AF:

0.000377

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.000268

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Intellectual disability, X-linked 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Dec 04, 2023

- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Jan 13, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

Cadd

Benign

0.12

Dann

Benign

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00011

dbscSNV1_RF

Benign

0.048

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over