rs782051125

Variant names:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001111125.3(IQSEC2):c.188A>G(p.Glu63Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000125 in 1,160,224 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 38 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 0.00032 ( 0 hom., 6 hem., cov: 22)

Exomes 𝑓: 0.00010 ( 0 hom. 32 hem. )

Consequence

IQSEC2
NM_001111125.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4O:1

Conservation

PhyloP100: 1.43

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 -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005777359).

BP6

Variant X-53320936-T-C is Benign according to our data. Variant chrX-53320936-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 383983.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-53320936-T-C is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000317 (35/110294) while in subpopulation EAS AF= 0.00322 (11/3412). AF 95% confidence interval is 0.00181. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 6 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IQSEC2	NM_001111125.3 link	c.188A>G	p.Glu63Gly	missense_variant	Exon 1 of 15	ENST00000642864.1	NP_001104595.1	Q5JU85-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IQSEC2	ENST00000642864.1 link	c.188A>G	p.Glu63Gly	missense_variant	Exon 1 of 15		NM_001111125.3	ENSP00000495726.1		Q5JU85-2

Frequencies

GnomAD3 genomes

AF:

0.000317

AC:

AN:

110239

Hom.:

Cov.:

AF XY:

0.000184

AC XY:

AN XY:

32669

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00207

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00321

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00134

GnomAD3 exomes

AF:

0.000297

AC:

AN:

104244

Hom.:

AF XY:

0.000272

AC XY:

AN XY:

36812

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000516

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00377

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000105

AC:

110

AN:

1049930

Hom.:

Cov.:

AF XY:

0.0000933

AC XY:

AN XY:

342862

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000358

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00302

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000366

Gnomad4 OTH exome

AF:

0.000541

GnomAD4 genome

AF:

0.000317

AC:

AN:

110294

Hom.:

Cov.:

AF XY:

0.000183

AC XY:

AN XY:

32734

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00207

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00322

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00133

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.000125

ExAC

AF:

0.000217

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Intellectual disability, X-linked 1

Benign:1Other:1

GenomeConnect, ClinGen

Significance: not provided

Review Status: no classification provided

Collection Method: phenotyping only

GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Jan 05, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Inborn genetic diseases

Benign:1

Mar 21, 2017

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided

Benign:1

Oct 26, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

IQSEC2-related disorder

Benign:1

Jul 12, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely 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

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.69

BayesDel_noAF

Benign

-0.76

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.017

.;T;T

FATHMM_MKL

Benign

0.33

LIST_S2

Benign

0.74

T;.;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.0058

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

.;N;N

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-1.2

.;N;.

REVEL

Benign

0.16

Sift

Uncertain

0.0030

.;D;.

Sift4G

Uncertain

0.0050

.;D;.

Vest4

0.17

MutPred

0.049

Gain of MoRF binding (P = 0.0652);Gain of MoRF binding (P = 0.0652);Gain of MoRF binding (P = 0.0652);

MVP

0.28

MPC

1.3

ClinPred

0.051

GERP RS

2.7

Varity_R

0.17

gMVP

0.84

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