Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: A Phase 3, Multi-centre, Open-label, Extension Study to Investigate the Long-term Safety of SPD422 in Japanese Adults With Essential Thrombocythaemia
Brief Summary: The purpose of this study is to provide SPD422 to subjects who completed Study SPD422 308 and, in the opinion of the Investigator, will continue to benefit from treatment.