A Non-Interventional Study of Clinical Characteristics and Mortality of US Patients With Fibrodysplasia Ossificans Progressiva (FOP)

Primary Objective(s): * To describe the demographic characteristics of people living with FOP and a matched cohort of non-FOP people living in the United States (U.S.) * To describe the prevalence of clinical characteristics of interest and the use of key medications in people living with FOP and a matched cohort of non-FOP people living in the U.S. * To compare the prevalence of key clinical characteristics and medication use in people living with FOP to a matched cohort of non-FOP people living in the U.S. * To estimate the crude mortality rate among people living with FOP