Seattlegeneva

SEATTLE and GENEVA - Primary Endpoint met With a Significant Reduction in Relapse Rate - Secondary Endpoints met Including MRI Measures, Proportion of Patients Relapse-Free and Disability Progression - Submission for Registration of Cladribine Tablets Planned for mid-2009 Merck Serono, a division of Merck KGaA, announced today detailed results of the two-year (96-week) placebo-controlled CLARITY(1) Phase III trial using Cladribine Tablets (Merck Serono's proprietary investigational oral formulation of cladribine) to treat patients with relapsing-remitting multiple sclerosis (MS).