X-77683833-G-C

Position:

chrX-77683833-G-C

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_000489.6(ATRX):c.1423C>G(p.His475Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000213 in 1,208,486 control chromosomes in the GnomAD database, including 1 homozygotes. There are 124 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H475Y) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00045 ( 0 hom., 15 hem., cov: 24)

Exomes 𝑓: 0.00019 ( 1 hom. 109 hem. )

Consequence

ATRX
NM_000489.6 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4O:1

Conservation

PhyloP100: 0.791

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 Benign. Variant got -19 ACMG points.

PP2

Missense variant where missense usually causes diseases, ATRX

BP4

Computational evidence support a benign effect (MetaRNN=0.0056580603).

BP6

Variant X-77683833-G-C is Benign according to our data. Variant chrX-77683833-G-C is described in ClinVar as [Benign]. Clinvar id is 133653.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000455 (51/112152) while in subpopulation SAS AF= 0.00258 (7/2716). AF 95% confidence interval is 0.00121. There are 0 homozygotes in gnomad4. There are 15 alleles in male gnomad4 subpopulation. Median coverage is 24. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 15 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATRX	NM_000489.6 linkuse as main transcript	c.1423C>G	p.His475Asp	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.1423C>G	p.His475Asp	missense_variant	9/35	1	NM_000489.6	P3	P46100-1

Frequencies

GnomAD3 genomes

AF:

0.000455

AC:

AN:

112097

Hom.:

Cov.:

AF XY:

0.000437

AC XY:

AN XY:

34295

show subpopulations

Gnomad AFR

AF:

0.00136

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000946

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00257

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000664

GnomAD3 exomes

AF:

0.000361

AC:

AN:

182745

Hom.:

AF XY:

0.000593

AC XY:

AN XY:

67465

show subpopulations

Gnomad AFR exome

AF:

0.000991

Gnomad AMR exome

AF:

0.0000365

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00267

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000222

GnomAD4 exome

AF:

0.000189

AC:

207

AN:

1096334

Hom.:

Cov.:

AF XY:

0.000301

AC XY:

109

AN XY:

361808

show subpopulations

Gnomad4 AFR exome

AF:

0.00159

Gnomad4 AMR exome

AF:

0.0000284

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00287

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.000174

GnomAD4 genome

AF:

0.000455

AC:

AN:

112152

Hom.:

Cov.:

AF XY:

0.000437

AC XY:

AN XY:

34360

show subpopulations

Gnomad4 AFR

AF:

0.00136

Gnomad4 AMR

AF:

0.0000945

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00258

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000655

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.000442

ESP6500AA

AF:

0.00130

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000577

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Benign

Submissions summary: Benign:4Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Alpha thalassemia-X-linked intellectual disability syndrome

Benign:2

Likely benign, no assertion criteria provided	clinical testing	Natera, Inc.	Jan 24, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 27, 2024	- -

Inborn genetic diseases

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 16, 2017

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Feb 12, 2020

- -

not specified

Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.046

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.56

CADD

Benign

1.1

DANN

Benign

0.51

FATHMM_MKL

Benign

0.0029

LIST_S2

Benign

0.082

T;.;T;T;T

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.0057

T;T;T;T;T

MetaSVM

Benign

-0.76

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.28

PROVEAN

Benign

1.1

N;N;.;.;.

REVEL

Benign

0.23

Sift

Benign

1.0

T;T;.;.;.

Sift4G

Benign

0.81

T;T;T;.;T

Polyphen

0.0

B;.;.;.;.

Vest4

0.044

MVP

0.16

MPC

0.028

ClinPred

0.0021

GERP RS

3.6

gMVP

0.054

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