Osteogenesis Imperfecta, Type Xviii, also known as oi18, is related to mediastinitis and central sleep apnea. An important gene associated with Osteogenesis Imperfecta, Type Xviii is TENT5A (Terminal Nucleotidyltransferase 5A), and among its related pathways/superpathways is Anti-diabetic Drug Potassium Channel Inhibitors Pathway, Pharmacodynamics. Affiliated tissues include bone and cortex, and related phenotypes are abnormality of the dentition and recurrent fractures