chrX-77683458-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_000489.6(ATRX):c.1798A>G(p.Ile600Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000232 in 1,208,699 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000080 ( 0 hom., 0 hem., cov: 22)

Exomes 𝑓: 0.000017 ( 0 hom. 6 hem. )

Consequence

ATRX
NM_000489.6 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.663

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

alpha thalassemia-X-linked intellectual disability syndrome
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
ATR-X-related syndrome
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
intellectual disability-hypotonic facies syndrome, X-linked, 1
Inheritance: XL Classification: MODERATE Submitted by: Ambry Genetics

ATRX links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.018885225).

BP6

Variant X-77683458-T-C is Benign according to our data. Variant chrX-77683458-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 581151.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Hemizygotes in GnomAdExome4 at 6 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATRX	NM_000489.6 link	c.1798A>G	p.Ile600Val	missense_variant	Exon 9 of 35	ENST00000373344.11	NP_000480.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATRX	ENST00000373344.11 link	c.1798A>G	p.Ile600Val	missense_variant	Exon 9 of 35	1	NM_000489.6	ENSP00000362441.4		P46100-1

Frequencies

GnomAD3 genomes

AF:

0.0000803

AC:

AN:

112028

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000259

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000949

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000546

AC:

AN:

183015

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.000459

Gnomad AMR exome

AF:

0.000146

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:

0.0000173

AC:

AN:

1096620

Hom.:

Cov.:

AF XY:

0.0000166

AC XY:

AN XY:

362064

show subpopulations

African (AFR)

AF:

0.000303

AC:

AN:

26360

American (AMR)

AF:

0.000170

AC:

AN:

35206

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19370

East Asian (EAS)

AF:

0.0000994

AC:

AN:

30189

South Asian (SAS)

AF:

0.00

AC:

AN:

54101

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40530

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4130

European-Non Finnish (NFE)

AF:

0.00000238

AC:

AN:

840687

Other (OTH)

AF:

0.00

AC:

AN:

46047

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.0000803

AC:

AN:

112079

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34283

show subpopulations

African (AFR)

AF:

0.000259

AC:

AN:

30929

American (AMR)

AF:

0.0000948

AC:

AN:

10550

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2647

East Asian (EAS)

AF:

0.00

AC:

AN:

3580

South Asian (SAS)

AF:

0.00

AC:

AN:

2683

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6129

Middle Eastern (MID)

AF:

0.00

AC:

AN:

217

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53123

Other (OTH)

AF:

0.00

AC:

AN:

1537

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.531

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000214

Hom.:

Bravo

AF:

0.0000793

ESP6500AA

AF:

0.000261

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Nov 09, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: ATRX c.1798A>G (p.Ile600Val) results in a conservative amino acid change in the encoded protein sequence. Four of four in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 2.3e-05 in 1208699 control chromosomes including six hemizygotes. To our knowledge, no occurrence of c.1798A>G in individuals affected with ATR-X Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. Three submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. All submitters classified the variant as likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -

Inborn genetic diseases

Benign:1

Nov 12, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely 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. -

Alpha thalassemia-X-linked intellectual disability syndrome

Benign:1

Oct 24, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Jun 29, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis, which includes splice predictors and evolutionary conservation, suggests this variant may impact gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function -

ATRX-related disorder

Benign:1

Mar 14, 2024

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.056

BayesDel_addAF

Benign

-0.56

BayesDel_noAF

Benign

-0.70

CADD

Benign

0.13

(source)

DANN

Benign

0.51

FATHMM_MKL

Benign

0.0050

LIST_S2

Benign

0.57

T;.

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.019

T;T

MetaSVM

Benign

-0.80

PhyloP100

-0.66

PrimateAI

Benign

0.26

PROVEAN

Benign

0.18

N;N

REVEL

Uncertain

0.30

Sift

Benign

0.94

T;T

Sift4G

Benign

1.0

T;T

Vest4

0.049

MVP

0.36

MPC

0.023

ClinPred

0.011

GERP RS

-7.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.069

Mutation Taster

=95/5

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over