Mitochondrial Membrane Protein-Associated Neurodegeneration, also known as nbia4, is related to neurodegeneration with brain iron accumulation 4 and neurodegeneration with brain iron accumulation, and has symptoms including ataxia, muscle spasticity and tremor. An important gene associated with Mitochondrial Membrane Protein-Associated Neurodegeneration is C19orf12 (Chromosome 19 Open Reading Frame 12). The drug Iron has been mentioned in the context of this disorder. Affiliated tissues include brain and eye, and related phenotypes are spasticity and dysarthria