ContractThe Clinical Trial Agreement • February 25th, 2021
Contract Type FiledFebruary 25th, 2021AMENDMENT # 1 TO THE CLINICAL TRIAL AGREEMENT This Amendment # 1(the “Amendment”) dated 15Feb2021 to the CLINICAL TRIAL AGREEMENT, dated 27Feb2019 (the “ Agreement”) for the clinical study conducted in accordance with the Protocol ID-054-304 (REACT) titled: “ A prospective, multi-center, double-blind, randomized, placebo-controlled, parallel-group, Phase 3 study to assess the efficacy and safety of clazosentan in preventing clinical deterioration due to delayed cerebral ischemia (DCI), in adult subjects with aneurysmal subarachnoid hemorrhage (aSAH) ” and any amendments thereto (the “Study”), has been concluded by and between: Idorsia Pharmaceuticals Ltd, Hegenheimermattweg 91, 4123 Allschwil, Switzerland ("IDORSIA") And Krajská zdravotní, a.s – Masarykova nemocnice v Ústí nad Labem, o.z., Sociální péče 3316/12A, 401 13 Ústí nad Labem, Czech Republic (“INSTITUTION”) And Prof. MUDr. Martin Sameš, PhD.,Na Drahách 1093/27A, 400 01 Ústí nad Labem, Czech Republic (the “INVESTI