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rs797045629

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6BP7BS2

The NM_001111125.3(IQSEC2):c.3663A>G(p.Pro1221=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000405 in 1,159,908 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 16 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).

Frequency

Genomes: 𝑓 0.000028 ( 0 hom., 1 hem., cov: 21)
Exomes 𝑓: 0.000042 ( 0 hom. 15 hem. )

Consequence

IQSEC2
NM_001111125.3 synonymous

Scores

2

Clinical Significance

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

Conservation

PhyloP100: 2.08
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 Benign. Variant got -10 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.61).
BP6
Variant X-53235023-T-C is Benign according to our data. Variant chrX-53235023-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 211206.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.
BP7
Synonymous conserved (PhyloP=2.08 with no splicing effect.
BS2
High Hemizygotes in GnomAdExome at 3 XL gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
IQSEC2NM_001111125.3 linkuse as main transcriptc.3663A>G p.Pro1221= synonymous_variant 15/15 ENST00000642864.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
IQSEC2ENST00000642864.1 linkuse as main transcriptc.3663A>G p.Pro1221= synonymous_variant 15/15 NM_001111125.3 P1Q5JU85-2

Frequencies

GnomAD3 genomes
AF:
0.0000282
AC:
3
AN:
106471
Hom.:
0
Cov.:
21
AF XY:
0.0000333
AC XY:
1
AN XY:
30019
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:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000578
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000532
AC:
6
AN:
112811
Hom.:
0
AF XY:
0.0000740
AC XY:
3
AN XY:
40525
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:
0.000138
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000418
AC:
44
AN:
1053437
Hom.:
0
Cov.:
47
AF XY:
0.0000435
AC XY:
15
AN XY:
344487
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:
0.0000525
Gnomad4 OTH exome
AF:
0.0000226
GnomAD4 genome
AF:
0.0000282
AC:
3
AN:
106471
Hom.:
0
Cov.:
21
AF XY:
0.0000333
AC XY:
1
AN XY:
30019
show subpopulations
Gnomad4 AFR
AF:
0.00
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:
0.0000578
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000868
Hom.:
0
Bravo
AF:
0.0000302

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoFeb 06, 2015- -
Intellectual disability, X-linked 1 Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeMar 20, 2023- -
not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxNov 13, 2018- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.61
Cadd
Benign
9.8
Dann
Benign
0.73
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7

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: rs797045629; hg19: chrX-53264205; API