Encephalopathy, Progressive, Early-Onset, with Brain Edema and/or Leukoencephalopathy, 2, is also known as nad hx dehydratase deficiency. An important gene associated with Encephalopathy, Progressive, Early-Onset, with Brain Edema and/or Leukoencephalopathy, 2 is NAXD (NAD(P)HX Dehydratase). Affiliated tissues include brain and skin, and related phenotypes are skin rash and encephalopathy