Spondyloepimetaphyseal Dysplasia, X-Linked, with Hypomyelinating Leukodystrophy, also known as leukoencephalopathy with metaphyseal chondrodysplasia, is related to 3-methylglutaconic aciduria, type iii and paraplegia, and has symptoms including fine tremor and unspecified visual loss. An important gene associated with Spondyloepimetaphyseal Dysplasia, X-Linked, with Hypomyelinating Leukodystrophy is AIFM1 (Apoptosis Inducing Factor Mitochondria Associated 1). Affiliated tissues include brain and bone.