Sleep Apnea, also known as sleep apnea syndromes, is related to central sleep apnea and apnea, obstructive sleep, and has symptoms including apnea, back pain and cheyne-stokes respiration. An important gene associated with Sleep Apnea is AHDC1 (AT-Hook DNA Binding Motif Containing 1), and among its related pathways/superpathways are Metabolism of proteins and Signal Transduction. The drugs Hydroxychloroquine and Opium have been mentioned in the context of this disorder. Affiliated tissues include heart and tongue, and related phenotypes are homeostasis/metabolism and renal/urinary system