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PELIZAEUS MERZBACHER DISEASE

PELIZAEUS MERZBACHER DISEASE
PROTEOLIPID PROTEIN, MYELIN; PELIZAEUS-MERZBACHER SYNDROME
312080
OMIM = Online Mendelian Inheritance of Men
702
Myelin proteolipid protein
---
Xp22.2
E75.2
rare
X-linked recessive
mutation in the PLP1 gene
2 types:
type I: Classical form, less severe with survival into adulthood
type II: Connatal form, most severe with death in first decade

Laboratory findings    N-Acetylaspartylglutamate inc (urine)
Symptoms    ataxia
    chorea or athetosis
    dysarthria
    dystonia
    EMG abnormalities [-]
    eye movements, abnormal
    fasciculations
    hearing defect, deafness
    hypertonia, spasticity
    hypotonia
    mental retardation
    microcephaly (<2 SD for age)
    motor retardation
    MRI, brain, abnormalities [-]
    nystagmus
    onset, childhood
    onset, infancy
    onset, neonatal
    optic atrophy
    progressive neurologic defect
    psychomotor retardation
    seizures
    stridor