rs782757975

chrX-77682560-G-AchrX-77682560-G-CchrX-77682560-G-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 1P and 7B. PP2BP4_ModerateBP6BS2

The NM_000489.6(ATRX):c.2696C>T(p.Thr899Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000306 in 1,209,219 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 13 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T899A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000033 ( 0 hom. 12 hem. )

Consequence

ATRX
NM_000489.6 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.273

Variant links:

Genes affected

ATRX (HGNC:886): (ATRX chromatin remodeler) The protein encoded by this gene contains an ATPase/helicase domain, and thus it belongs to the SWI/SNF family of chromatin remodeling proteins. This protein is found to undergo cell cycle-dependent phosphorylation, which regulates its nuclear matrix and chromatin association, and suggests its involvement in the gene regulation at interphase and chromosomal segregation in mitosis. Mutations in this gene are associated with X-linked syndromes exhibiting cognitive disabilities as well as alpha-thalassemia (ATRX) syndrome. These mutations have been shown to cause diverse changes in the pattern of DNA methylation, which may provide a link between chromatin remodeling, DNA methylation, and gene expression in developmental processes. Multiple alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2017]

ATRX links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

PP2

Missense variant where missense usually causes diseases, ATRX

BP4

Computational evidence support a benign effect (MetaRNN=0.07419348).

BP6

Variant X-77682560-G-A is Benign according to our data. Variant chrX-77682560-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 465047.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=1}.

BS2

High Hemizygotes in GnomAdExome at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATRX	NM_000489.6 linkuse as main transcript	c.2696C>T	p.Thr899Met	missense_variant	9/35	ENST00000373344.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATRX	ENST00000373344.11 linkuse as main transcript	c.2696C>T	p.Thr899Met	missense_variant	9/35	1	NM_000489.6	P3	P46100-1

Frequencies

GnomAD3 genomes

AF:

0.00000896

AC:

AN:

111591

Hom.:

Cov.:

AF XY:

0.0000296

AC XY:

AN XY:

33811

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:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000274

AC:

AN:

182178

Hom.:

AF XY:

0.0000447

AC XY:

AN XY:

67084

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000729

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:

0.0000370

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000328

AC:

AN:

1097628

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

363072

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000568

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000662

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000356

Gnomad4 OTH exome

AF:

0.0000434

GnomAD4 genome

AF:

0.00000896

AC:

AN:

111591

Hom.:

Cov.:

AF XY:

0.0000296

AC XY:

AN XY:

33811

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:

0.0000188

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000577

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Alpha thalassemia-X-linked intellectual disability syndrome

Uncertain:1Benign:1

Benign, criteria provided, single submitter	clinical testing	Invitae	Dec 09, 2023	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Oct 28, 2019	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 28, 2019

The p.T899M variant (also known as c.2696C>T), located in coding exon 9 of the ATRX gene, results from a C to T substitution at nucleotide position 2696. The threonine at codon 899 is replaced by methionine, an amino acid with similar properties. This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.53

Cadd

Benign

9.3

Dann

Benign

0.59

FATHMM_MKL

Benign

0.19

LIST_S2

Uncertain

0.90

D;.;D;D

M_CAP

Uncertain

0.097

MetaRNN

Benign

0.074

T;T;T;T

MetaSVM

Benign

-0.38

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.70

N;N;.;.

REVEL

Benign

0.26

Sift

Uncertain

0.0040

D;D;.;.

Sift4G

Uncertain

0.026

D;D;T;.

Polyphen

0.77

P;.;.;.

Vest4

0.091

MutPred

0.17

Loss of phosphorylation at T899 (P = 0.0508);.;.;.;

MVP

0.45

MPC

0.042

ClinPred

0.057

GERP RS

0.77

gMVP

0.13

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over