ENS-MECP2
MCID: ENC054
MIFTS: 26

Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations (ENS-MECP2)

Categories: Genetic diseases, Mental diseases, Neuronal diseases, Rare diseases

Aliases & Classifications for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

MalaCards integrated aliases for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:

Name: Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations 58 76
Severe Neonatal-Onset Encephalopathy with Microcephaly 60 30 6
Encephalopathy, Neonatal Severe 58 13
Severe Congenital Encephalopathy Due to Mecp2 Mutation 60
Encephalopathy, Neonatal, Severe 41
Ens-Mecp2 76

Characteristics:

Orphanet epidemiological data:

60
severe neonatal-onset encephalopathy with microcephaly
Inheritance: X-linked recessive; Prevalence: <1/1000000 (Worldwide); Age of onset: Infancy,Neonatal; Age of death: early childhood;

OMIM:

58
Miscellaneous:
onset at birth
death usually within first 2 years of life
mecp2 mutations are those found in females with rett syndrome

Inheritance:
x-linked recessive


HPO:

33
encephalopathy, neonatal severe, due to mecp2 mutations:
Onset and clinical course congenital onset
Inheritance x-linked recessive inheritance


Classifications:

Orphanet: 60  
Rare neurological diseases


Summaries for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

OMIM : 58 The MECP2 gene is mutated in Rett syndrome (RTT; 312750), a severe neurodevelopmental disorder that almost always occurs in females. Although it was first thought that MECP2 mutations causing Rett syndrome were lethal in males, later reports identified a severe neonatal encephalopathy in surviving male sibs of patients with Rett syndrome. Since then, additional reports have confirmed a severe phenotype in males with RTT-associated MECP2 mutations (Moog et al., 2003; Villard, 2007). Males with non-RTT mutations in the MECP2 gene can demonstrate a wide variety of phenotypes: see also nonspecific X-linked mental retardation, X-linked mental retardation with spasticity (300055), and X-linked mental retardation due to increased dosage of the MECP2 gene (300260). (300673)

MalaCards based summary : Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations, also known as severe neonatal-onset encephalopathy with microcephaly, is related to encephalopathy, neonatal severe, with lactic acidosis and brain abnormalities and mecp2-related severe neonatal encephalopathy, and has symptoms including seizures, myoclonus and apnea. An important gene associated with Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations is MECP2 (Methyl-CpG Binding Protein 2). Affiliated tissues include brain, and related phenotypes are seizures and hyperreflexia

UniProtKB/Swiss-Prot : 76 Encephalopathy, neonatal severe, due to MECP2 mutations: A neurodevelopmental disorder characterized by severe neonatal encephalopathy, developmental delay, mental retardation, microcephaly, seizures. Additional features include respiratory insufficiency and central hypoventilation, gastroesophageal reflux, axial hypotonia, hyperreflexia and dyskinetic movements.

Related Diseases for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

Diseases in the Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations family:

Mecp2-Related Severe Neonatal Encephalopathy

Diseases related to Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations via text searches within MalaCards or GeneCards Suite gene sharing:

# Related Disease Score Top Affiliating Genes
1 encephalopathy, neonatal severe, with lactic acidosis and brain abnormalities 12.6
2 mecp2-related severe neonatal encephalopathy 11.7
3 encephalopathy 9.8

Symptoms & Phenotypes for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

Human phenotypes related to Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:

33 (show all 18)
# Description HPO Frequency HPO Source Accession
1 seizures 33 HP:0001250
2 hyperreflexia 33 HP:0001347
3 failure to thrive 33 HP:0001508
4 respiratory insufficiency 33 HP:0002093
5 eeg abnormality 33 HP:0002353
6 global developmental delay 33 HP:0001263
7 gastroesophageal reflux 33 HP:0002020
8 feeding difficulties in infancy 33 HP:0008872
9 intellectual disability, severe 33 HP:0010864
10 myoclonus 33 HP:0001336
11 apnea 33 HP:0002104
12 intellectual disability, progressive 33 HP:0006887
13 rigidity 33 HP:0002063
14 polymicrogyria 33 HP:0002126
15 encephalopathy 33 HP:0001298
16 central hypoventilation 33 HP:0007110
17 muscular hypotonia of the trunk 33 HP:0008936
18 progressive microcephaly 33 HP:0000253

Symptoms via clinical synopsis from OMIM:

58
Neurologic Central Nervous System:
seizures
hyperreflexia
myoclonus
limb rigidity
developmental delay, severe
more
Respiratory:
respiratory insufficiency
apnea
central hypoventilation

Head And Neck Head:
microcephaly, progressive

Growth Other:
failure to thrive

Abdomen Gastrointestinal:
gastroesophageal reflux
poor feeding

Neurologic Behavioral Psychiatric Manifestations:
stereotypical movements

Clinical features from OMIM:

300673

UMLS symptoms related to Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:


seizures, myoclonus, apnea, limb rigidity

Drugs & Therapeutics for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

Search Clinical Trials , NIH Clinical Center for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

Genetic Tests for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

Genetic tests related to Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:

# Genetic test Affiliating Genes
1 Severe Neonatal-Onset Encephalopathy with Microcephaly 30 MECP2

Anatomical Context for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

MalaCards organs/tissues related to Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:

42
Brain

Publications for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

Articles related to Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:

(show all 11)
# Title Authors Year
1
Clinical genetics evaluation in identifying the etiology of autism spectrum disorders: 2013 guideline revisions. ( 23519317 )
2013
2
MECP2 and CDKL5 gene mutation analysis in Chinese patients with Rett syndrome. ( 17089071 )
2007
3
MECP2 mutations in males. ( 17351020 )
2007
4
Early-onset encephalopathy and cortical myoclonus in a boy with MECP2 gene mutation. ( 15557528 )
2004
5
MECP2 mutation in a boy with severe neonatal encephalopathy: clinical, neuropathological and molecular findings. ( 11930274 )
2002
6
MECP2 gene nucleotide changes and their pathogenicity in males: proceed with caution. ( 12161600 )
2002
7
MeCP2 mutations in children with and without the phenotype of Rett syndrome. ( 11402105 )
2001
8
MECP2 mutation in non-fatal, non-progressive encephalopathy in a male. ( 11238684 )
2001
9
Rett syndrome is caused by mutations in X-linked MECP2, encoding methyl-CpG-binding protein 2. ( 10508514 )
1999
10
Rett syndrome and beyond: recurrent spontaneous and familial MECP2 mutations at CpG hotspots. ( 10577905 )
1999
11
Cortical reflex myoclonus in Rett syndrome. ( 9546328 )
1998

Variations for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

ClinVar genetic disease variations for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations:

6 (show top 50) (show all 286)
# Gene Variation Type Significance SNP ID Assembly Location
1 MECP2 NM_004992.3(MECP2): c.397C> T (p.Arg133Cys) single nucleotide variant Conflicting interpretations of pathogenicity rs28934904 GRCh37 Chromosome X, 153296882: 153296882
2 MECP2 NM_004992.3(MECP2): c.397C> T (p.Arg133Cys) single nucleotide variant Conflicting interpretations of pathogenicity rs28934904 GRCh38 Chromosome X, 154031431: 154031431
3 MECP2 NM_004992.3(MECP2): c.473C> T (p.Thr158Met) single nucleotide variant Pathogenic/Likely pathogenic rs28934906 GRCh37 Chromosome X, 153296806: 153296806
4 MECP2 NM_004992.3(MECP2): c.473C> T (p.Thr158Met) single nucleotide variant Pathogenic/Likely pathogenic rs28934906 GRCh38 Chromosome X, 154031355: 154031355
5 MECP2 MECP2, 1-BP DEL, 806G deletion Pathogenic
6 MECP2 NM_004992.3(MECP2): c.316C> T (p.Arg106Trp) single nucleotide variant Pathogenic/Likely pathogenic rs28934907 GRCh37 Chromosome X, 153297719: 153297719
7 MECP2 NM_004992.3(MECP2): c.316C> T (p.Arg106Trp) single nucleotide variant Pathogenic/Likely pathogenic rs28934907 GRCh38 Chromosome X, 154032268: 154032268
8 MECP2 NM_004992.3(MECP2): c.808C> T (p.Arg270Ter) single nucleotide variant Pathogenic rs61750240 GRCh37 Chromosome X, 153296471: 153296471
9 MECP2 NM_004992.3(MECP2): c.808C> T (p.Arg270Ter) single nucleotide variant Pathogenic rs61750240 GRCh38 Chromosome X, 154031020: 154031020
10 MECP2 NM_001110792.1(MECP2): c.916C> T (p.Arg306Ter) single nucleotide variant Pathogenic/Likely pathogenic,risk factor rs61751362 GRCh37 Chromosome X, 153296399: 153296399
11 MECP2 NM_001110792.1(MECP2): c.916C> T (p.Arg306Ter) single nucleotide variant Pathogenic/Likely pathogenic,risk factor rs61751362 GRCh38 Chromosome X, 154030948: 154030948
12 MECP2 NM_004992.3(MECP2): c.419C> T (p.Ala140Val) single nucleotide variant Pathogenic/Likely pathogenic rs28934908 GRCh37 Chromosome X, 153296860: 153296860
13 MECP2 NM_004992.3(MECP2): c.419C> T (p.Ala140Val) single nucleotide variant Pathogenic/Likely pathogenic rs28934908 GRCh38 Chromosome X, 154031409: 154031409
14 MECP2 NM_004992.3(MECP2): c.916C> T (p.Arg306Cys) single nucleotide variant Pathogenic rs28935468 GRCh37 Chromosome X, 153296363: 153296363
15 MECP2 NM_004992.3(MECP2): c.916C> T (p.Arg306Cys) single nucleotide variant Pathogenic rs28935468 GRCh38 Chromosome X, 154030912: 154030912
16 MECP2 NM_004992.3(MECP2): c.502C> T (p.Arg168Ter) single nucleotide variant Pathogenic rs61748421 GRCh37 Chromosome X, 153296777: 153296777
17 MECP2 NM_004992.3(MECP2): c.502C> T (p.Arg168Ter) single nucleotide variant Pathogenic rs61748421 GRCh38 Chromosome X, 154031326: 154031326
18 MECP2 NM_004992.3(MECP2): c.763C> T (p.Arg255Ter) single nucleotide variant Pathogenic/Likely pathogenic rs61749721 GRCh37 Chromosome X, 153296516: 153296516
19 MECP2 NM_004992.3(MECP2): c.763C> T (p.Arg255Ter) single nucleotide variant Pathogenic/Likely pathogenic rs61749721 GRCh38 Chromosome X, 154031065: 154031065
20 MECP2 NM_004992.3(MECP2): c.1282G> A (p.Gly428Ser) single nucleotide variant Likely benign rs61753971 GRCh37 Chromosome X, 153295997: 153295997
21 MECP2 NM_004992.3(MECP2): c.1282G> A (p.Gly428Ser) single nucleotide variant Likely benign rs61753971 GRCh38 Chromosome X, 154030546: 154030546
22 MECP2 NM_004992.3(MECP2): c.1154_1186del (p.Leu386_Ser396del) deletion Pathogenic GRCh37 Chromosome X, 153296093: 153296125
23 MECP2 NM_004992.3(MECP2): c.1154_1186del (p.Leu386_Ser396del) deletion Pathogenic GRCh38 Chromosome X, 154030642: 154030674
24 MECP2 NM_004992.3(MECP2): c.454C> G (p.Pro152Ala) single nucleotide variant Pathogenic rs179363900 GRCh37 Chromosome X, 153296825: 153296825
25 MECP2 NM_004992.3(MECP2): c.454C> G (p.Pro152Ala) single nucleotide variant Pathogenic rs179363900 GRCh38 Chromosome X, 154031374: 154031374
26 MECP2 NM_004992.3(MECP2): c.1072G> A (p.Ala358Thr) single nucleotide variant Benign/Likely benign rs147017239 GRCh37 Chromosome X, 153296207: 153296207
27 MECP2 NM_004992.3(MECP2): c.1072G> A (p.Ala358Thr) single nucleotide variant Benign/Likely benign rs147017239 GRCh38 Chromosome X, 154030756: 154030756
28 MECP2 NM_004992.3(MECP2): c.1327G> A (p.Ala443Thr) single nucleotide variant Conflicting interpretations of pathogenicity rs193922677 GRCh37 Chromosome X, 153295952: 153295952
29 MECP2 NM_004992.3(MECP2): c.1327G> A (p.Ala443Thr) single nucleotide variant Conflicting interpretations of pathogenicity rs193922677 GRCh38 Chromosome X, 154030501: 154030501
30 MECP2 NM_004992.3(MECP2): c.932C> T (p.Thr311Met) single nucleotide variant Conflicting interpretations of pathogenicity rs61751445 GRCh37 Chromosome X, 153296347: 153296347
31 MECP2 NM_004992.3(MECP2): c.932C> T (p.Thr311Met) single nucleotide variant Conflicting interpretations of pathogenicity rs61751445 GRCh38 Chromosome X, 154030896: 154030896
32 MECP2 NM_004992.3(MECP2): c.-140_-138dup duplication Conflicting interpretations of pathogenicity rs398123566 GRCh37 Chromosome X, 153363100: 153363102
33 MECP2 NM_004992.3(MECP2): c.-140_-138dup duplication Conflicting interpretations of pathogenicity rs398123566 GRCh38 Chromosome X, 154097643: 154097645
34 MECP2 NM_004992.3(MECP2): c.1071C> T (p.Ser357=) single nucleotide variant Benign/Likely benign rs61750236 GRCh37 Chromosome X, 153296208: 153296208
35 MECP2 NM_004992.3(MECP2): c.1071C> T (p.Ser357=) single nucleotide variant Benign/Likely benign rs61750236 GRCh38 Chromosome X, 154030757: 154030757
36 MECP2 NM_004992.3(MECP2): c.1126C> T (p.Pro376Ser) single nucleotide variant Conflicting interpretations of pathogenicity rs61752387 GRCh37 Chromosome X, 153296153: 153296153
37 MECP2 NM_004992.3(MECP2): c.1126C> T (p.Pro376Ser) single nucleotide variant Conflicting interpretations of pathogenicity rs61752387 GRCh38 Chromosome X, 154030702: 154030702
38 MECP2 NM_004992.3(MECP2): c.1189G> A (p.Glu397Lys) single nucleotide variant Conflicting interpretations of pathogenicity rs56268439 GRCh37 Chromosome X, 153296090: 153296090
39 MECP2 NM_004992.3(MECP2): c.1189G> A (p.Glu397Lys) single nucleotide variant Conflicting interpretations of pathogenicity rs56268439 GRCh38 Chromosome X, 154030639: 154030639
40 MECP2 NM_004992.3(MECP2): c.1197C> T (p.Pro399=) single nucleotide variant Benign/Likely benign rs61753012 GRCh37 Chromosome X, 153296082: 153296082
41 MECP2 NM_004992.3(MECP2): c.1197C> T (p.Pro399=) single nucleotide variant Benign/Likely benign rs61753012 GRCh38 Chromosome X, 154030631: 154030631
42 MECP2 NM_004992.3(MECP2): c.1233C> T (p.Ser411=) single nucleotide variant Benign rs3027928 GRCh37 Chromosome X, 153296046: 153296046
43 MECP2 NM_004992.3(MECP2): c.1233C> T (p.Ser411=) single nucleotide variant Benign rs3027928 GRCh38 Chromosome X, 154030595: 154030595
44 MECP2 NM_004992.3(MECP2): c.1330G> A (p.Ala444Thr) single nucleotide variant Benign/Likely benign rs61753975 GRCh37 Chromosome X, 153295949: 153295949
45 MECP2 NM_004992.3(MECP2): c.1330G> A (p.Ala444Thr) single nucleotide variant Benign/Likely benign rs61753975 GRCh38 Chromosome X, 154030498: 154030498
46 MECP2 NM_004992.3(MECP2): c.1335G> A (p.Thr445=) single nucleotide variant Benign rs3027927 GRCh37 Chromosome X, 153295944: 153295944
47 MECP2 NM_004992.3(MECP2): c.1335G> A (p.Thr445=) single nucleotide variant Benign rs3027927 GRCh38 Chromosome X, 154030493: 154030493
48 MECP2 NM_004992.3(MECP2): c.1373G> A (p.Arg458His) single nucleotide variant Benign rs185957513 GRCh37 Chromosome X, 153295906: 153295906
49 MECP2 NM_004992.3(MECP2): c.1373G> A (p.Arg458His) single nucleotide variant Benign rs185957513 GRCh38 Chromosome X, 154030455: 154030455
50 MECP2 NM_004992.3(MECP2): c.375C> A (p.Ile125=) single nucleotide variant Benign/Likely benign rs146107517 GRCh37 Chromosome X, 153297660: 153297660

Expression for Encephalopathy, Neonatal Severe, Due to Mecp2 Mutations

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