rs267608406

Variant names:

• chrX-154030648-CGGGCTCAGGTGGAGGTGG-C
• rs267608406
• NM_001110792.2:c.1198_1215delCCACCTCCACCTGAGCCC

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BS2_Supporting BP5 BS1

This summary comes from the ClinGen Evidence Repository: The allele frequency of the p.Pro388_Pro393del (NM_004992.3) variant in MECP2 is 0.01% in the African/African American sub population in gnomAD, which is high enough to meet the BS1 criteria based on thresholds defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like conditions (BS1). The p.Pro388_Pro393del variant is observed in at least 1 unaffected individual (PMID 21160487)(BS2_supporting). The p.Pro388_Pro393del variant is found in a patient with an alternate molecular basis of disease (PMID 21160487)(BP5). In summary, the p.Pro388_Pro393del variant in MECP2 is classified as likely benign based on the ACMG/AMP criteria (BS1, BS2_supporting, BP5). LINK:https://erepo.genome.network/evrepo/ui/classification/CA170191/MONDO:0010726/016

• Frequency:
  • Genomes: 𝑓 0.000097 (0 hom., 3 hem., cov: 0)
  • Exomes 𝑓: 0.000075 (0 hom. 20 hem.)
  • Failed GnomAD Quality Control
• Consequence: MECP2 NM_001110792.2 conservative_inframe_deletion
• Clinical Significance: Likely benign reviewed by expert panel U:1 B:6
• Conservation: PhyloP100: 5.37

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]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP5: For more information check the summary or visit ClinGen Evidence Repository.
• BS1: For more information check the summary or visit ClinGen Evidence Repository.
• BS2: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MECP2	NM_001110792.2	c.1198_1215delCCACCTCCACCTGAGCCC	p.Pro400_Pro405del	conservative_inframe_deletion	Exon 3 of 3	ENST00000453960.7	NP_001104262.1
MECP2	NM_004992.4	c.1162_1179delCCACCTCCACCTGAGCCC	p.Pro388_Pro393del	conservative_inframe_deletion	Exon 4 of 4	ENST00000303391.11	NP_004983.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MECP2	ENST00000453960.7	c.1198_1215delCCACCTCCACCTGAGCCC	p.Pro400_Pro405del	conservative_inframe_deletion	Exon 3 of 3	1	NM_001110792.2	ENSP00000395535.2
MECP2	ENST00000303391.11	c.1162_1179delCCACCTCCACCTGAGCCC	p.Pro388_Pro393del	conservative_inframe_deletion	Exon 4 of 4	1	NM_004992.4	ENSP00000301948.6

Frequencies

GnomAD3 genomes AF: 0.00 AC: 7 AN: 72333 Hom.: 0 Cov.: 0 AF XY: 0.000187 AC XY: 3 AN XY: 16021 FAILED QC

Gnomad AFR AF: 0.0000558

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: 0.000151

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000408 AC: 7 AN: 171619 Hom.: 0 AF XY: 0.0000480 AC XY: 3 AN XY: 62443

Gnomad AFR exome AF: 0.000172

Gnomad AMR exome AF: 0.0000374

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: 0.0000519

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000747 AC: 60 AN: 803418 Hom.: 0 AF XY: 0.0000820 AC XY: 20 AN XY: 243984

Gnomad4 AFR exome AF: 0.000207

Gnomad4 AMR exome AF: 0.0000341

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000693

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000819

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000968 AC: 7 AN: 72333 Hom.: 0 Cov.: 0 AF XY: 0.000187 AC XY: 3 AN XY: 16021

Gnomad4 AFR AF: 0.0000558

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: 0.000151

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000108 Hom.: 1

Bravo AF: 0.0000264

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:1 Benign:6

Revision: reviewed by expert panel

Submissions by phenotype

not specified Benign:2

Nov 01, 2011

RettBASE

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: curation

- -

Aug 14, 2015

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Rett syndrome Benign:2

Aug 14, 2023

Centre for Population Genomics, CPG

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: curation

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 likely benign. At least the following criteria are met: The allele frequency of this variant in at least one population in gnomAD is between 0.008% and 0.03% (BS1). The variant is observed in at least 1 individual with no features of Rett Syndrome (BS2_Supporting). Variant is found in an individual with an alternate molecular basis of disease (BP5). -

Dec 22, 2021

ClinGen Rett and Angelman-like Disorders Variant Curation Expert Panel

Significance: Likely benign

Review Status: reviewed by expert panel

Collection Method: curation

The allele frequency of the p.Pro388_Pro393del (NM_004992.3) variant in MECP2 is 0.01% in the African/African American sub population in gnomAD, which is high enough to meet the BS1 criteria based on thresholds defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like conditions (BS1). The p.Pro388_Pro393del variant is observed in at least 1 unaffected individual (PMID 21160487)(BS2_supporting). The p.Pro388_Pro393del variant is found in a patient with an alternate molecular basis of disease (PMID 21160487)(BP5). In summary, the p.Pro388_Pro393del variant in MECP2 is classified as likely benign based on the ACMG/AMP criteria (BS1, BS2_supporting, BP5). -

not provided Uncertain:1

Sep 01, 2018

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Severe neonatal-onset encephalopathy with microcephaly Benign:1

Feb 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

MECP2-related disorder Benign:1

May 11, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs267608406; hg19: chrX-153296099;