Extensive pathological and biochemical tests were performed, however the cause was found by studying a small population in which mutations in the eIF2B gene were found. No effective systemic studies have been conducted to determine the incidence around the world, but through the studies conducted thus far, it appears to be more prevalent in the<unk>  populations.<unk>  appears to have a lower number of cases in the Middle East, and Turkey has not yet had a reported case. Its prevalence is limited by the physician’s ability to identify the disease. As of 2006, more than 200 people have been identified with<unk> , many of whom were originally diagnosed with an unclassified leukodystrophy.
Leukoencephalopathy with vanishing white matter
Leukoencephalopathy with neuroaxonal spheroids
Megalencephalic leukoencephalopathy with subcortical cysts
Neurodegeneration with brain iron accumulation
Diffuse intrinsic pontine glioma
Hypertensive leukoencephalopathy
Wernicke encephalopathy
Camel spongiform encephalopathy