Amyotrophy, Monomelic, also known as monomelic amyotrophy, is related to o'sullivan-mcleod syndrome and muscular atrophy. An important gene associated with Amyotrophy, Monomelic is CEP126 (Centrosomal Protein 126). The drug Coal tar has been mentioned in the context of this disorder. Affiliated tissues include spinal cord and brain, and related phenotypes are muscle weakness and emg abnormality