Abstract:Pelizaeus–Merzbacher disease (PMD) is a rare X-linked central nervous system disease involving the proteolipid protein 1 (PLP1) gene on Xq22.1. PMD patients’ commonly exhibit signs including nystagmus, hypotonia, and developmental delay. We report a female case of mild spectrum phenotypic expression of PMD attributable to a de novo Copy Number Variant (CNV) change. A two and half-year-old girl presented to our clinic with hypotonicity. She had apneic spells at birth, and was diagnosed to have nystagmus when sh… Show more
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