Variant chrX-53321040-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_001111125.3(IQSEC2):c.84C>T(p.Asn28=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000619 in 1,153,018 control chromosomes in the GnomAD database, including 7 homozygotes. There are 239 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., 66 hem., cov: 21)

Exomes 𝑓: 0.00057 ( 7 hom. 173 hem. )

Consequence

IQSEC2
NM_001111125.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.31

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.54).

BP6

Variant X-53321040-G-A is Benign according to our data. Variant chrX-53321040-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 382662.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.31 with no splicing effect.

BS2

High Hemizygotes in GnomAd4 at 66 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IQSEC2	NM_001111125.3 linkuse as main transcript	c.84C>T	p.Asn28=	synonymous_variant	1/15	ENST00000642864.1	NP_001104595.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IQSEC2	ENST00000642864.1 linkuse as main transcript	c.84C>T	p.Asn28=	synonymous_variant	1/15		NM_001111125.3	ENSP00000495726	P1	Q5JU85-2

Frequencies

GnomAD3 genomes

AF:

0.00110

AC:

120

AN:

109422

Hom.:

Cov.:

AF XY:

0.00207

AC XY:

AN XY:

31902

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000294

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0173

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000307

Gnomad OTH

AF:

0.00136

GnomAD3 exomes

AF:

0.00144

AC:

143

AN:

99236

Hom.:

AF XY:

0.00123

AC XY:

AN XY:

35806

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0233

Gnomad NFE exome

AF:

0.000133

Gnomad OTH exome

AF:

0.000650

GnomAD4 exome

AF:

0.000569

AC:

594

AN:

1043543

Hom.:

Cov.:

AF XY:

0.000508

AC XY:

173

AN XY:

340821

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0188

Gnomad4 NFE exome

AF:

0.0000513

Gnomad4 OTH exome

AF:

0.000452

GnomAD4 genome

AF:

0.00110

AC:

120

AN:

109475

Hom.:

Cov.:

AF XY:

0.00206

AC XY:

AN XY:

31963

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000295

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0173

Gnomad4 NFE

AF:

0.000307

Gnomad4 OTH

AF:

0.00134

Alfa

AF:

0.00113

Hom.:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Jan 06, 2016

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Intellectual disability, X-linked 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 14, 2023

- -

IQSEC2-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

May 23, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Benign

0.97

Splicing

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