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GeneBe

rs755745002

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_139058.3(ARX):​c.611G>T​(p.Arg204Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000984 in 1,016,064 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R204H) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 23)
Exomes 𝑓: 9.8e-7 ( 0 hom. 0 hem. )

Consequence

ARX
NM_139058.3 missense

Scores

2
4
11

Clinical Significance

Uncertain significance criteria provided, single submitter U:1B:1

Conservation

PhyloP100: 1.03
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.36798728).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ARXNM_139058.3 linkuse as main transcriptc.611G>T p.Arg204Leu missense_variant 2/5 ENST00000379044.5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ARXENST00000379044.5 linkuse as main transcriptc.611G>T p.Arg204Leu missense_variant 2/51 NM_139058.3 P1

Frequencies

GnomAD3 genomes
Cov.:
23
GnomAD4 exome
AF:
9.84e-7
AC:
1
AN:
1016064
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
323354
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:
0.00000124
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
23

ClinVar

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

Submissions by phenotype

Intellectual disability, X-linked, with or without seizures, arx-related;C3463992:Developmental and epileptic encephalopathy, 1 Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingInvitaeSep 02, 2021- -
Intellectual disability Benign:1
Likely benign, no assertion criteria providedclinical testingCentre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de LilleJan 01, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Uncertain
0.11
D
BayesDel_noAF
Benign
-0.090
CADD
Benign
20
DANN
Benign
0.96
DEOGEN2
Benign
0.21
T
FATHMM_MKL
Benign
0.69
D
LIST_S2
Benign
0.59
T
M_CAP
Pathogenic
0.75
D
MetaRNN
Benign
0.37
T
MetaSVM
Uncertain
-0.15
T
MutationAssessor
Benign
1.6
L
MutationTaster
Benign
1.0
N
PrimateAI
Pathogenic
0.92
D
PROVEAN
Benign
-1.1
N
REVEL
Uncertain
0.34
Sift
Uncertain
0.0010
D
Sift4G
Benign
0.35
T
Polyphen
0.57
P
Vest4
0.35
MutPred
0.18
Gain of helix (P = 0.062);
MVP
0.90
MPC
1.7
ClinPred
0.75
D
GERP RS
2.9
Varity_R
0.26
gMVP
0.27

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: rs755745002; hg19: chrX-25031501; API