Safety and Efficacy of Istradefylline in Parkinson's Disease Patients With and Without Preexisting Dyskinesia: Pooled Analysis of 8 Randomized Controlled Trials, Nobutaka Hattori, Lawrence Elmer, Stuart H Isaacson, Rajesh Pahwa, Olivier Rascol, Kapil Sethi, Fabrizio Stocchi, Yu Nakajima, Hannah Cummings, Lia Kostiuk. J Mov Disord 2025 Jul;18(3):262-267.