Neurodegeneration, Childhood-Onset, with Multisystem Involvement Due to Mitochondrial Dysfunction, is also known as condmim. An important gene associated with Neurodegeneration, Childhood-Onset, with Multisystem Involvement Due to Mitochondrial Dysfunction is LETM1 (Leucine Zipper And EF-Hand Containing Transmembrane Protein 1). Affiliated tissues include brain and skeletal muscle, and related phenotypes are visual impairment and global developmental delay