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rs1290683569

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_ModerateBP6_Moderate

The NM_001111125.3(IQSEC2):c.3730C>T(p.His1244Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000012 in 1,165,715 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 7 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★). Synonymous variant affecting the same amino acid position (i.e. H1244H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 1 hem., cov: 22)
Exomes 𝑓: 0.000011 ( 0 hom. 6 hem. )

Consequence

IQSEC2
NM_001111125.3 missense

Scores

3
11

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 7.26
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.15947026).
BP6
Variant X-53234956-G-A is Benign according to our data. Variant chrX-53234956-G-A is described in ClinVar as [Benign]. Clinvar id is 538598.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
IQSEC2NM_001111125.3 linkuse as main transcriptc.3730C>T p.His1244Tyr missense_variant 15/15 ENST00000642864.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
IQSEC2ENST00000642864.1 linkuse as main transcriptc.3730C>T p.His1244Tyr missense_variant 15/15 NM_001111125.3 P1Q5JU85-2

Frequencies

GnomAD3 genomes
AF:
0.0000179
AC:
2
AN:
111934
Hom.:
0
Cov.:
22
AF XY:
0.0000293
AC XY:
1
AN XY:
34120
show subpopulations
Gnomad AFR
AF:
0.0000325
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.0000188
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000892
AC:
1
AN:
112104
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
40026
show subpopulations
Gnomad AFR exome
AF:
0.000158
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000114
AC:
12
AN:
1053781
Hom.:
0
Cov.:
47
AF XY:
0.0000174
AC XY:
6
AN XY:
344763
show subpopulations
Gnomad4 AFR exome
AF:
0.0000402
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:
0.0000134
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000179
AC:
2
AN:
111934
Hom.:
0
Cov.:
22
AF XY:
0.0000293
AC XY:
1
AN XY:
34120
show subpopulations
Gnomad4 AFR
AF:
0.0000325
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000188
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000264

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Intellectual disability, X-linked 1 Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeDec 21, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.21
BayesDel_addAF
Benign
-0.40
T
BayesDel_noAF
Benign
-0.56
Cadd
Benign
21
Dann
Benign
0.38
FATHMM_MKL
Uncertain
0.94
D
M_CAP
Benign
0.048
D
MetaRNN
Benign
0.16
T;T
MetaSVM
Benign
-1.1
T
MutationTaster
Benign
1.0
D;N;N
PrimateAI
Uncertain
0.64
T
PROVEAN
Benign
-0.71
N;.
REVEL
Benign
0.077
Sift
Uncertain
0.026
D;.
Sift4G
Benign
0.28
T;.
Vest4
0.28
MutPred
0.23
Gain of phosphorylation at H1244 (P = 0.0473);Gain of phosphorylation at H1244 (P = 0.0473);
MVP
0.49
MPC
1.5
ClinPred
0.15
T
GERP RS
2.6
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.21
gMVP
0.028

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.

Other links and lift over

dbSNP: rs1290683569; hg19: chrX-53264138; API