rs372500343

Positions:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP7BA1BP4

This summary comes from the ClinGen Evidence Repository: The allele frequency of the c.54C>G p.Leu18= variant in MECP2 (NM_004992.1) is 0.042% in the African/African American sub population in gnomAD, which is high enough to be classified as benign based on thresholds defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like conditions (BA1). The silent p.Leu18= variant is not predicted to affect splicing using multiple computational tools and does not affect a highly conserved nucleotide (BP4, BP7). In summary, the c.54C>G p.Leu18= variant in MECP2 is classified as Benign based on the ACMG/AMP criteria (BA1, BP4, BP7). LINK:https://erepo.genome.network/evrepo/ui/classification/CA243345/MONDO:0010726/032

Frequency

Genomes: 𝑓 0.000062 ( 0 hom., 1 hem., cov: 24)

Exomes 𝑓: 0.0000037 ( 0 hom. 1 hem. )

Consequence

MECP2
NM_001316337.2 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Benign reviewed by expert panel U:1B:4

Conservation

PhyloP100: 0.568

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 -10 ACMG points.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BP7

For more information check the summary or visit ClinGen Evidence Repository.

BA1

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MECP2	NM_001110792.2 link	c.90C>G	p.Leu30Leu	synonymous_variant	2/3	ENST00000453960.7	NP_001104262.1	P51608-2A0A140VKC4Q59FJ6
MECP2	NM_004992.4 link	c.54C>G	p.Leu18Leu	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 link	c.90C>G	p.Leu30Leu	synonymous_variant	2/3	1	NM_001110792.2	ENSP00000395535.2		P51608-2
MECP2	ENST00000303391.11 link	c.54C>G	p.Leu18Leu	synonymous_variant	3/4	1	NM_004992.4	ENSP00000301948.6		P51608-1

Frequencies

GnomAD3 genomes

AF:

0.0000622

AC:

AN:

112613

Hom.:

Cov.:

AF XY:

0.0000288

AC XY:

AN XY:

34747

show subpopulations

Gnomad AFR

AF:

0.000226

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

GnomAD3 exomes

AF:

0.0000336

AC:

AN:

178410

Hom.:

AF XY:

0.0000152

AC XY:

AN XY:

65586

show subpopulations

Gnomad AFR exome

AF:

0.000460

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000366

AC:

AN:

1094125

Hom.:

Cov.:

AF XY:

0.00000277

AC XY:

AN XY:

361283

show subpopulations

Gnomad4 AFR exome

AF:

0.000152

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000621

AC:

AN:

112667

Hom.:

Cov.:

AF XY:

0.0000287

AC XY:

AN XY:

34811

show subpopulations

Gnomad4 AFR

AF:

0.000226

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000793

ClinVar

Significance: Benign

Submissions summary: Uncertain:1Benign:4

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	May 27, 2015	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 23, 2020	- -

Severe neonatal-onset encephalopathy with microcephaly

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 29, 2024

- -

Rett syndrome

Benign:1

Benign, reviewed by expert panel

curation

ClinGen Rett and Angelman-like Disorders Variant Curation Expert Panel

Jun 15, 2023

The allele frequency of the c.54C>G p.Leu18= variant in MECP2 (NM_004992.1) is 0.042% in the African/African American sub population in gnomAD, which is high enough to be classified as benign based on thresholds defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like conditions (BA1). The silent p.Leu18= variant is not predicted to affect splicing using multiple computational tools and does not affect a highly conserved nucleotide (BP4, BP7). In summary, the c.54C>G p.Leu18= variant in MECP2 is classified as Benign based on the ACMG/AMP criteria (BA1, BP4, BP7). -

MECP2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 24, 2023

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

-0.54

CADD

Benign

7.6

DANN

Benign

0.79

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