Enhancing Efficiency and Decision Quality in Parkinson’s Disease Drug Trials for LRRK2 Programs Using Item Response ModellingPAGE 29 (2021) Abstr 9857. Ibrahim MMA, Plan EL, Jönsson S, Chen C, Karlsson MO.CNSConferenceMIDDPharmacometricsTrial design and analysisPharmetheus Affiliates Chief Business Development Officer & Deputy CEOElodie PlanSee bio Senior Director, R&D ScientistSiv JönssonSee bio Scientific Advisor & Board MemberMats KarlssonSee bio