A Phase II Randomised, Double-blinded, Placebo-controlled Parallel Group Trial to Examine the Efficacy and Safety of 4 Oral Doses of BI 425809 Once Daily Over 12 Week Treatment Period in Patients With Schizophrenia

Change From Baseline in Cognitive Function as Measured by the Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery (MCCB) Overall Composite T-score After 12 Weeks of Treatment

时间窗: Baseline, after 6 and 12 weeks of treatment

MCCB overall composite T-score was derived from scores of 7 cognitive domains (Speed of Processing, Verbal Learning, Working Memory, Reasoning and Problem Solving, Visual Learning, Social Cognition, Attention) obtained from a total of 10 tests (Trail Making, Brief Assessment of Cognition in Schizophrenia, Hopkins Verbal Learning, Wechsler Memory Scale, Letter-Number Span, Neuropsychological Assessment Battery, Brief Visuospatial Memory, Category Fluency, Mayer-Salovey-Caruso Emotional Intelligence, Continuous Performance) and ranges typically between -20 and +99, a larger T-score indicates better cognition. Change from baseline in MCCB overall composite T-score after 12 weeks of treatment was modeled using a MMRM with fixed, categorical factors of treatment at each visit, and continuous factors of baseline at each visit, using visit (week 6 and week 12 of treatment) as repeated measures, subject as random effect, adjusted mean (standard error) after 12 weeks of treatment is reported.