X-154030667-G-A

Position:

chrX-154030667-G-A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_001110792.2(MECP2):c.1197C>T(p.Pro399=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000122 in 1,088,399 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 48 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.000064 ( 0 hom., 2 hem., cov: 21)

Exomes 𝑓: 0.00012 ( 0 hom. 48 hem. )

Failed GnomAD Quality Control

Consequence

MECP2
NM_001110792.2 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: 1.27

Variant links:

Genes affected

MECP2 (HGNC:6990): (methyl-CpG binding protein 2) DNA methylation is the major modification of eukaryotic genomes and plays an essential role in mammalian development. Human proteins MECP2, MBD1, MBD2, MBD3, and MBD4 comprise a family of nuclear proteins related by the presence in each of a methyl-CpG binding domain (MBD). Each of these proteins, with the exception of MBD3, is capable of binding specifically to methylated DNA. MECP2, MBD1 and MBD2 can also repress transcription from methylated gene promoters. In contrast to other MBD family members, MECP2 is X-linked and subject to X inactivation. MECP2 is dispensible in stem cells, but is essential for embryonic development. MECP2 gene mutations are the cause of most cases of Rett syndrome, a progressive neurologic developmental disorder and one of the most common causes of cognitive disability in females. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Oct 2015]

MECP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.63).

BP6

Variant X-154030667-G-A is Benign according to our data. Variant chrX-154030667-G-A is described in ClinVar as [Benign]. Clinvar id is 95186.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-154030667-G-A is described in Lovd as [Likely_benign]. Variant chrX-154030667-G-A is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=1.27 with no splicing effect.

BS2

High Hemizygotes in GnomAdExome4 at 48 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MECP2	NM_001110792.2 linkuse as main transcript	c.1197C>T	p.Pro399=	synonymous_variant	3/3	ENST00000453960.7	NP_001104262.1
MECP2	NM_004992.4 linkuse as main transcript	c.1161C>T	p.Pro387=	synonymous_variant	4/4	ENST00000303391.11	NP_004983.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MECP2	ENST00000453960.7 linkuse as main transcript	c.1197C>T	p.Pro399=	synonymous_variant	3/3	1	NM_001110792.2	ENSP00000395535		P51608-2
MECP2	ENST00000303391.11 linkuse as main transcript	c.1161C>T	p.Pro387=	synonymous_variant	4/4	1	NM_004992.4	ENSP00000301948	P1	P51608-1
MECP2	ENST00000407218.5 linkuse as main transcript	c.*533C>T		3_prime_UTR_variant	4/4	5		ENSP00000384865
MECP2	ENST00000628176.2 linkuse as main transcript	c.*533C>T		3_prime_UTR_variant	5/5	3		ENSP00000486978

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

108851

Hom.:

Cov.:

AF XY:

0.0000642

AC XY:

AN XY:

31143

FAILED QC

Gnomad AFR

AF:

0.0000671

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000195

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:

0.0000384

Gnomad OTH

AF:

0.000685

GnomAD3 exomes

AF:

0.000156

AC:

AN:

172947

Hom.:

AF XY:

0.000158

AC XY:

AN XY:

63223

show subpopulations

Gnomad AFR exome

AF:

0.0000869

Gnomad AMR exome

AF:

0.000147

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000733

Gnomad SAS exome

AF:

0.000212

Gnomad FIN exome

AF:

0.000379

Gnomad NFE exome

AF:

0.000156

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000122

AC:

133

AN:

1088399

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

356397

show subpopulations

Gnomad4 AFR exome

AF:

0.0000381

Gnomad4 AMR exome

AF:

0.000114

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000332

Gnomad4 SAS exome

AF:

0.000111

Gnomad4 FIN exome

AF:

0.000326

Gnomad4 NFE exome

AF:

0.000123

Gnomad4 OTH exome

AF:

0.000109

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000643

AC:

AN:

108851

Hom.:

Cov.:

AF XY:

0.0000642

AC XY:

AN XY:

31143

show subpopulations

Gnomad4 AFR

AF:

0.0000671

Gnomad4 AMR

AF:

0.000195

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000384

Gnomad4 OTH

AF:

0.000685

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000869

ClinVar

Significance: Benign

Submissions summary: Benign:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Rett syndrome

Benign:3

Benign, criteria provided, single submitter	curation	Centre for Population Genomics, CPG	Mar 14, 2024	This variant has been collected from RettBASE and curated to current modified ACMG/AMP criteria. Based on the classification scheme defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like Disorders Specifications to the ACMG/AMP Variant Interpretation Guidelines VCEP 3.0, this variant is classified as benign. At least the following criteria are met: The allele frequency of this variant in at least one population in gnomAD is higher than the 0.03% threshold defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like Disorders VCEP 3.0 (BA1). -
Benign, criteria provided, single submitter	clinical testing	Molecular Genetics Laboratory, Children's Mercy Hospital and Clinics	-	- -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Dec 01, 2015	- -

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -
Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 08, 2013	- -
Benign, no assertion criteria provided	curation	RettBASE	Nov 01, 2011	- -

Severe neonatal-onset encephalopathy with microcephaly

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 24, 2024

- -

Inborn genetic diseases

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 14, 2018

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. -

MECP2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 26, 2024

This variant is classified as likely 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

BayesDel_noAF

Benign

-0.63

CADD

Benign

4.0

DANN

Benign

0.47

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