rs922800521

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6BP7BS2

The NM_139058.3(ARX):​c.825C>T​(p.Ala275Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000504 in 1,190,442 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 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. A275A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 1 hem., cov: 23)
Exomes 𝑓: 0.0000046 ( 0 hom. 0 hem. )

Consequence

ARX
NM_139058.3 synonymous

Scores

2

Clinical Significance

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

Conservation

PhyloP100: 1.29

Publications

0 publications found
Variant links:
Genes affected
ARX (HGNC:18060): (aristaless related homeobox) This gene is a homeobox-containing gene expressed during development. The expressed protein contains two conserved domains, a C-peptide (or aristaless domain) and the prd-like class homeobox domain. It is a member of the group-II aristaless-related protein family whose members are expressed primarily in the central and/or peripheral nervous system. This gene is thought to be involved in CNS development. Expansion of a polyalanine tract and other mutations in this gene cause X-linked cognitive disability and epilepsy. [provided by RefSeq, Jul 2016]
ARX Gene-Disease associations (from GenCC):
  • genetic developmental and epileptic encephalopathy
    Inheritance: XL, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
  • intellectual disability, X-linked, with or without seizures, ARX-related
    Inheritance: XL Classification: DEFINITIVE, MODERATE Submitted by: Ambry Genetics, G2P
  • Partington syndrome
    Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
  • X-linked complex neurodevelopmental disorder
    Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
  • X-linked lissencephaly with abnormal genitalia
    Inheritance: XL Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
  • infantile spasms
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • corpus callosum agenesis-abnormal genitalia syndrome
    Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
  • infantile epileptic-dyskinetic encephalopathy
    Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
  • non-syndromic X-linked intellectual disability
    Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
  • X-linked spasticity-intellectual disability-epilepsy syndrome
    Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.52).
BP6
Variant X-25013170-G-A is Benign according to our data. Variant chrX-25013170-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 416372.
BP7
Synonymous conserved (PhyloP=1.29 with no splicing effect.
BS2
High AC in GnomAdExome4 at 5 AD,XL gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ARXNM_139058.3 linkc.825C>T p.Ala275Ala synonymous_variant Exon 2 of 5 ENST00000379044.5 NP_620689.1 Q96QS3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ARXENST00000379044.5 linkc.825C>T p.Ala275Ala synonymous_variant Exon 2 of 5 1 NM_139058.3 ENSP00000368332.4 Q96QS3

Frequencies

GnomAD3 genomes
AF:
0.00000889
AC:
1
AN:
112540
Hom.:
0
Cov.:
23
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:
0.000283
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000723
AC:
1
AN:
138246
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000884
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000464
AC:
5
AN:
1077902
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
349932
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
26051
American (AMR)
AF:
0.00
AC:
0
AN:
33377
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19021
East Asian (EAS)
AF:
0.0000680
AC:
2
AN:
29408
South Asian (SAS)
AF:
0.0000193
AC:
1
AN:
51797
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
36396
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
3055
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
833538
Other (OTH)
AF:
0.0000442
AC:
2
AN:
45259
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000889
AC:
1
AN:
112540
Hom.:
0
Cov.:
23
AF XY:
0.0000288
AC XY:
1
AN XY:
34720
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31053
American (AMR)
AF:
0.00
AC:
0
AN:
10841
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2655
East Asian (EAS)
AF:
0.000283
AC:
1
AN:
3528
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2741
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
6192
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
236
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
53098
Other (OTH)
AF:
0.00
AC:
0
AN:
1521

Age Distribution

Genome Hom
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000113

ClinVar

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

Submissions by phenotype

not provided Uncertain:1
Oct 30, 2024
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

In silico analysis indicates that this variant does not alter splicing; Has not been previously published as pathogenic or benign to our knowledge -

Intellectual disability, X-linked, with or without seizures, ARX-related;C3463992:Developmental and epileptic encephalopathy, 1 Benign:1
Sep 30, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.52
CADD
Benign
9.7
DANN
Benign
0.68
PhyloP100
1.3

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

Other links and lift over

dbSNP: rs922800521; hg19: chrX-25031287; API