rs61754439

Positions:

chrX-154032374-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001316337.2(MECP2):c.-70C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000331 in 1,211,438 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 121 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., 35 hem., cov: 24)

Exomes 𝑓: 0.00025 ( 0 hom. 86 hem. )

Consequence

MECP2
NM_001316337.2 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: -2.96

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:

MECP2 (HGNC:):

MECP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant X-154032374-G-A is Benign according to our data. Variant chrX-154032374-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 138186.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-154032374-G-A is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00109 (124/113349) while in subpopulation AFR AF= 0.00322 (101/31341). AF 95% confidence interval is 0.00271. There are 0 homozygotes in gnomad4. There are 35 alleles in male gnomad4 subpopulation. Median coverage is 24. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 35 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MECP2	NM_001110792.2 linkuse as main transcript	c.246C>T	p.Ser82Ser	synonymous_variant	2/3	ENST00000453960.7	NP_001104262.1	P51608-2A0A140VKC4Q59FJ6
MECP2	NM_004992.4 linkuse as main transcript	c.210C>T	p.Ser70Ser	synonymous_variant	3/4	ENST00000303391.11	NP_004983.1	P51608-1D3YJ43Q59FJ6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MECP2	ENST00000453960.7 linkuse as main transcript	c.246C>T	p.Ser82Ser	synonymous_variant	2/3	1	NM_001110792.2	ENSP00000395535.2		P51608-2
MECP2	ENST00000303391.11 linkuse as main transcript	c.210C>T	p.Ser70Ser	synonymous_variant	3/4	1	NM_004992.4	ENSP00000301948.6		P51608-1

Frequencies

GnomAD3 genomes

AF:

0.00106

AC:

120

AN:

113296

Hom.:

Cov.:

AF XY:

0.000903

AC XY:

AN XY:

35436

show subpopulations

Gnomad AFR

AF:

0.00310

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000831

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:

0.000206

Gnomad OTH

AF:

0.00196

GnomAD3 exomes

AF:

0.000497

AC:

AN:

183197

Hom.:

AF XY:

0.000251

AC XY:

AN XY:

67647

show subpopulations

Gnomad AFR exome

AF:

0.00372

Gnomad AMR exome

AF:

0.00120

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000722

Gnomad SAS exome

AF:

0.0000524

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000734

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.000252

AC:

277

AN:

1098089

Hom.:

Cov.:

AF XY:

0.000237

AC XY:

AN XY:

363449

show subpopulations

Gnomad4 AFR exome

AF:

0.00337

Gnomad4 AMR exome

AF:

0.00116

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000331

Gnomad4 SAS exome

AF:

0.0000554

Gnomad4 FIN exome

AF:

0.0000247

Gnomad4 NFE exome

AF:

0.000141

Gnomad4 OTH exome

AF:

0.000391

GnomAD4 genome

AF:

0.00109

AC:

124

AN:

113349

Hom.:

Cov.:

AF XY:

0.000986

AC XY:

AN XY:

35499

show subpopulations

Gnomad4 AFR

AF:

0.00322

Gnomad4 AMR

AF:

0.000830

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.00194

Alfa

AF:

0.000945

Hom.:

Bravo

AF:

0.00138

EpiCase

AF:

0.000273

EpiControl

AF:

0.000178

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Benign, no assertion criteria provided	curation	RettBASE	Mar 31, 2003	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 22, 2015	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 07, 2012	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Oct 12, 2016	- -

Rett syndrome

Benign:1

Benign, criteria provided, single submitter

curation

Centre for Population Genomics, CPG

Oct 12, 2023

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 2.0, 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 2.0 (BA1). -

Severe neonatal-onset encephalopathy with microcephaly

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 29, 2024

- -

Rett syndrome;C0796222:X-linked intellectual disability-psychosis-macroorchidism syndrome;C1845336:Autism, susceptibility to, X-linked 3;C1846058:Syndromic X-linked intellectual disability Lubs type;C1968556:Severe neonatal-onset encephalopathy with microcephaly

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Nov 12, 2021

- -

History of neurodevelopmental disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 17, 2017

General population or subpopulation frequency is too high to be a pathogenic mutation based on disease/syndrome prevalence and penetrance -

MECP2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

May 21, 2021

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

-0.83

CADD

Benign

0.56

DANN

Benign

0.71

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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