BeneFIX Drug Use Results Survey [All-Case Surveillance]

The survey is intended to investigate the following matters, etc. under the actual use status after marketing in all patients who are administered this drug for a certain period of time after the launch. 1. Occurrence status of adverse events 2. Factors that may influence the safety 3. Efficacy In addition, the following occurrence statuses will be investigated as priority items of the survey: Incidence rate of inhibitor, reduction in drug, efficacy, Allergic reaction, and Thrombosis.