<prompt> All the following are mitochondrial disorders EXCEPT :MELASKearns Sayre syndromeNARP syndromeIncontinentia pigmenti  <response>: Mitochondrial DNA disorders MELAS- Mitochondrial Encephalopathy, Lactic Acidosis and Stroke-like episodes Leigh syndrome Leber hereditary optic neuropathy Kearns Sayre syndrome NARP syndrome - Neuropathy, Ataxia Retinitis Pigmentosa MERRF - Myoclonic epilepsy with ragged-red fibers Whereas Incontinentia pigmenti Bloch-Sulzberger syndrome X-linked genetic disease Skin, hair, teeth CNS manifestations 