rs1006404746

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_139058.3(ARX):​c.663C>T​(p.Thr221Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000374 in 1,150,184 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. T221T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., 2 hem., cov: 23)
Exomes 𝑓: 0.000026 ( 0 hom. 6 hem. )

Consequence

ARX
NM_139058.3 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.0200

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: AD, XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
  • 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: Orphanet, G2P
  • 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: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
  • 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 -17 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.73).
BP6
Variant X-25013332-G-A is Benign according to our data. Variant chrX-25013332-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 386858.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-0.02 with no splicing effect.
BS2
High AC in GnomAd4 at 16 AD,XL gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_139058.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ARX
NM_139058.3
MANE Select
c.663C>Tp.Thr221Thr
synonymous
Exon 2 of 5NP_620689.1Q96QS3

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ARX
ENST00000379044.5
TSL:1 MANE Select
c.663C>Tp.Thr221Thr
synonymous
Exon 2 of 5ENSP00000368332.4Q96QS3

Frequencies

GnomAD3 genomes
AF:
0.000145
AC:
16
AN:
110346
Hom.:
0
Cov.:
23
show subpopulations
Gnomad AFR
AF:
0.000491
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:
0.0000191
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000533
AC:
5
AN:
93801
AF XY:
0.0000609
show subpopulations
Gnomad AFR exome
AF:
0.000729
Gnomad AMR exome
AF:
0.0000527
Gnomad ASJ exome
AF:
0.00
Gnomad EAS 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:
0.0000260
AC:
27
AN:
1039838
Hom.:
0
Cov.:
32
AF XY:
0.0000177
AC XY:
6
AN XY:
339242
show subpopulations
African (AFR)
AF:
0.000203
AC:
5
AN:
24670
American (AMR)
AF:
0.0000360
AC:
1
AN:
27796
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
18545
East Asian (EAS)
AF:
0.00
AC:
0
AN:
26883
South Asian (SAS)
AF:
0.00
AC:
0
AN:
49496
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
26349
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
3545
European-Non Finnish (NFE)
AF:
0.0000244
AC:
20
AN:
818416
Other (OTH)
AF:
0.0000227
AC:
1
AN:
44138
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.511
Heterozygous variant carriers
0
1
3
4
6
7
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome 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
GnomAD4 genome
AF:
0.000145
AC:
16
AN:
110346
Hom.:
0
Cov.:
23
AF XY:
0.0000610
AC XY:
2
AN XY:
32780
show subpopulations
African (AFR)
AF:
0.000491
AC:
15
AN:
30557
American (AMR)
AF:
0.00
AC:
0
AN:
10663
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2622
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3439
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2621
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
5715
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
235
European-Non Finnish (NFE)
AF:
0.0000191
AC:
1
AN:
52351
Other (OTH)
AF:
0.00
AC:
0
AN:
1487
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.457
Heterozygous variant carriers
0
1
3
4
6
7
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
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:
0.000136

ClinVar

ClinVar submissions
Significance:Benign/Likely benign
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
1
Intellectual disability, X-linked, with or without seizures, ARX-related;C3463992:Developmental and epileptic encephalopathy, 1 (1)
-
-
1
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.73
CADD
Benign
8.9
DANN
Benign
0.94
PhyloP100
-0.020
Mutation Taster
=100/0
polymorphism

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: rs1006404746; hg19: chrX-25031449; API