Enzalutamide for Primary Immune Prostate Cancer in Routine Clinical Practice: Results from a Rare Metastasis Study in Japan

Introduction: The effectiveness and safety of romiplostim were evaluated by immune thrombocytopenia (ITP) phase (newly diagnosed/persistent/ chronic) at romiplostim initiation. Methods: This is a post hoc analysis of a prospective, Japanese, multicentre, observational study in adults with ITP who received ≥1 dose of romiplostim. Follow-up data were collected for ≤2 years. Outcomes included overall platelet response (≥1 platelet count ≥50 × 109/L at 2–24 weeks after romiplostim initiation) or durable platelet response (≥75% of measurements ≥50 × 109/L at 14–24 weeks) and adverse drug reactions (ADRs), evaluated by ITP phase.