Variant chrX-53234268-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_001111125.3(IQSEC2):c.4418C>T(p.Pro1473Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000041 in 975,899 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. P1473P) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 15)

Exomes 𝑓: 0.0000041 ( 0 hom. 2 hem. )

Consequence

IQSEC2
NM_001111125.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

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 -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19100425).

BP6

Variant X-53234268-G-A is Benign according to our data. Variant chrX-53234268-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1218277.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Benign=1}.

BS2

High Hemizygotes in GnomAdExome4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IQSEC2	NM_001111125.3 linkuse as main transcript	c.4418C>T	p.Pro1473Leu	missense_variant	15/15	ENST00000642864.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IQSEC2	ENST00000642864.1 linkuse as main transcript	c.4418C>T	p.Pro1473Leu	missense_variant	15/15		NM_001111125.3	P1	Q5JU85-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000166

AC:

AN:

60405

Hom.:

AF XY:

0.00

AC XY:

AN XY:

10167

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:

0.00

Gnomad NFE exome

AF:

0.0000480

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

975899

Hom.:

Cov.:

AF XY:

0.00000678

AC XY:

AN XY:

294809

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:

0.00

Gnomad4 NFE exome

AF:

0.00000516

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Oct 24, 2023	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jan 01, 2024	IQSEC2: PM2, PP2 -

Intellectual disability, X-linked 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jul 30, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Uncertain

DANN

Uncertain

0.99

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.80

.;T

M_CAP

Benign

0.038

MetaRNN

Benign

0.19

T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

0.84

D;D;D

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-1.4

N;.

REVEL

Benign

0.10

Sift

Uncertain

0.0010

D;.

Sift4G

Benign

0.16

T;.

Vest4

0.16

MutPred

0.27

Loss of glycosylation at P1473 (P = 0.025);Loss of glycosylation at P1473 (P = 0.025);

MVP

0.22

MPC

1.1

ClinPred

0.33

GERP RS

3.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.13

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

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