X-77683911-G-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_000489.6(ATRX):c.1345C>G(p.Pro449Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000331 in 1,207,539 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. 14/19 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. P449R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000018 ( 0 hom. 0 hem. )

Consequence

ATRX
NM_000489.6 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.0270

Publications

0 publications found

Variant links:

COSMIC-nc: COSV64879294

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: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.047857255).

BP6

Variant X-77683911-G-C is Benign according to our data. Variant chrX-77683911-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 446886.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATRX	NM_000489.6 link	c.1345C>G	p.Pro449Ala	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.1345C>G	p.Pro449Ala	missense_variant	Exon 9 of 35	1	NM_000489.6	ENSP00000362441.4		P46100-1

Frequencies

GnomAD3 genomes

AF:

0.0000179

AC:

AN:

112014

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000648

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000548

AC:

AN:

182583

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.0000760

Gnomad AMR exome

AF:

0.00

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:

0.00000183

AC:

AN:

1095525

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

361049

show subpopulations

African (AFR)

AF:

0.0000379

AC:

AN:

26354

American (AMR)

AF:

0.00

AC:

AN:

35201

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19369

East Asian (EAS)

AF:

0.00

AC:

AN:

30184

South Asian (SAS)

AF:

0.00

AC:

AN:

54086

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40184

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4125

European-Non Finnish (NFE)

AF:

0.00000119

AC:

AN:

840009

Other (OTH)

AF:

0.00

AC:

AN:

46013

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000179

AC:

AN:

112014

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34242

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000648

AC:

AN:

30864

American (AMR)

AF:

0.00

AC:

AN:

10540

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2644

East Asian (EAS)

AF:

0.00

AC:

AN:

3599

South Asian (SAS)

AF:

0.00

AC:

AN:

2726

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6072

Middle Eastern (MID)

AF:

0.00

AC:

AN:

237

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53135

Other (OTH)

AF:

0.00

AC:

AN:

1511

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.350

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 08, 2017

Athena Diagnostics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Alpha thalassemia-X-linked intellectual disability syndrome

Benign:1

Dec 18, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.45

CADD

Benign

1.7

(source)

DANN

Benign

0.37

DEOGEN2

Benign

0.0084

.;.;T;T;.

FATHMM_MKL

Benign

0.20

LIST_S2

Benign

0.83

T;.;T;T;T

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.048

T;T;T;T;T

MetaSVM

Benign

-0.57

PhyloP100

0.027

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.38

N;N;.;.;.

REVEL

Benign

0.20

Sift

Benign

0.66

T;T;.;.;.

Sift4G

Benign

1.0

T;T;T;.;T

Polyphen

0.022

B;.;.;.;.

Vest4

0.12

MutPred

0.15

Loss of catalytic residue at P449 (P = 0.0201);.;.;Loss of catalytic residue at P449 (P = 0.0201);.;

MVP

0.48

MPC

0.024

ClinPred

0.025

GERP RS

0.30

gMVP

0.055

Mutation Taster

=99/1

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over