Leukoencephalopathy with Vanishing White Matter 4, also known as vwm4, is related to leukoencephalopathy with vanishing white matter and leukoencephalopathy with vanishing white matter 1. An important gene associated with Leukoencephalopathy with Vanishing White Matter 4 is EIF2B4 (Eukaryotic Translation Initiation Factor 2B Subunit Delta). Affiliated tissues include brain, and related phenotypes are spasticity and optic atrophy