MethodsClinical trials with randomised, double-blind, placebo (PLB)-controlled designs were included in these analyses. Data from 3 SCH [NCT00694707, NCT01104766, NCT01104779; 1.5-9 mg/d] and 3 BD [NCT01396447, NCT02670538, NCT02670551; 1.5-3 mg/d] studies were pooled. In MDD, add-on CAR to antidepressant treatment was evaluated against PLB in two studies [NCT03738215: 1.5 and 3 mg/d; NCT01469377: 1-2 mg/d and 2-4.5 mg/d).
Least square (LS) mean changes were analysed using Mixed Model Repeated Measures: from baseline (BL) to Week 6 in the Positive and Negative Syndrome Scale (PANSS)-derived Marder anxiety/depression factor items (schizophrenia); from BL to Week 6 in the Montgomery-Åsberg Depression Rating Scale (MADRS) total scores (bipolar depression); and from BL to Week 6 [NCT03738215] and Week 8 [NCT01469377] in MADRS total score (major depressive disorder).
ResultsAltogether, 1466 SCH (PLB=442, CAR=1024) patients were included in the pooled analysis. In the BD analysis, data from 1383 (PLB=460, CAR=923) patients were pooled. In the MDD trials, there were 502 CAR (1.5mg/d=250, 3 mg/d=252) and 249 PLB-treated patients [NCT03738215], and 544 CAR (1-2 mg/d=273, 2-4.5 mg/d=271) and 264 PLB patients in the other study [NCT01469377]. In SCH, CAR achieved significantly greater reductions than PLB on the Marder anxiety/depression factor domain (LS mean change: PLB= -2.66, CAR= -3.26, p<0.01): the effect was driven by 3 out of 4 items. In BD, CAR yielded significantly greater improvement on the MADRS compared to PLB (LS mean change: PLB= -12.05, CAR= -14.69, p<0.001), which was driven by 9 out of 10 items. In MDD [NCT03738215], CAR 1.5 mg/d add-on significantly alleviated depressive symptoms compared to PLB (LS mean change: PLB= -11.5, CAR 1.5mg/d= -14.1, p<0.01), while in the other MDD trial [NCT01469377], CAR 2-4.5 mg/d add-on produced significantly greater reductions than PLB (LS mean change: PLB= -12.5, CAR 2-4.5 mg/d= -14.6, p<0.01).
Disclosure of InterestR. McIntyre Grant / Research support from: CIHR/GACD/National Natural Science Foundation of China (NSFC), the Milken Institute, Consultant of: Lundbeck, Janssen, Alkermes, Neumora Therapeutics, Boehringer Ingelheim, Sage, Biogen, Mitsubishi Tanabe, Purdue, Pfizer, Otsuka, Takeda, Neurocrine, Sunovion, Bausch Health, Axsome, Novo Nordisk, Kris, Sanofi, Eisai, Intra-Cellular, NewBridge Pharmaceuticals, Viatris, Abbvie, Gedeon Richter, Recordati, Atai Life Sciences, Speakers bureau of: Lundbeck, Janssen, Alkermes, Neumora Therapeutics, Boehringer Ingelheim, Sage, Biogen, Mitsubishi Tanabe, Purdue, Pfizer, Otsuka, Takeda, Neurocrine, Sunovion, Bausch Health, Axsome, Novo Nordisk, Kris, Sanofi, Eisai, Intra-Cellular, NewBridge Pharmaceuticals, Viatris, Abbvie, Gedeon Richter, Recordati, Atai Life Sciences, R. Csehi Employee of: Gedeon Richter Plc., G. Németh Employee of: Gedeon Richter Plc.