Gracile Syndrome, also known as finnish lethal neonatal metabolic syndrome, is related to mitochondrial complex iii deficiency, nuclear type 1 and bjornstad syndrome. An important gene associated with Gracile Syndrome is BCS1L (BCS1 Homolog, Ubiquinol-Cytochrome C Reductase Complex Chaperone), and among its related pathways/superpathways are Metabolism and Respiratory electron transport, ATP synthesis by chemiosmotic coupling, and heat production by uncoupling proteins.. Affiliated tissues include liver and kidney, and related phenotypes are hearing impairment and intrauterine growth retardation