Double-blind Trial with Rikkunshito versus Placebo on Efficacy and Safety in Patients with Functional Dyspepsia :Multi-center Study - DREAM Study

In this study, 128 patients were included in the safety analysis set and 125 were included in the full analysis set (FAS). As for demographic characteristics in the FAS, there were more women (89 patients) than men (36 patients); mean age was 50.4; mean BMI was 21.2 kg/m2; 82 patients had duration of FD >1 year. Regarding a subtype of FD, 49 patients had a PDS subtype, 42 had an EPS, and 34 had overlapping PDS-EPS. A total of 114 patients had no overlapping with IBS. In the analysis of the score distribution of 7 categories in OTE at the final data (i.e., the latest evaluable time point of the all patients including discontinued patients) in the FAS, a primary endpoint of this study, the patients in Rikkunshito group ranged between score 1 and 4, those in Rikkunshito placebo group (including those worsened) ranged between score 1 and 5, and statistically significant differences were observed (p=0.038). In the secondary endpoints, changes from baseline at the final data were statistically significant differences between groups in a total scores of Modified FSSG, GOS score, subscores of Postprandial Fullness/Early satiety and Bloating in PAGI-SYM, as well as overall score and Anxiety subscore of HAD. No statistical differences were observed in either PCS or MCS score of SF-8. In the safety analysis set, the incidence of AEs was 10.8% (7/65 patients) in Rikkunshito group and 11.1% (7/63) in Rikkunshito placebo group. The most common AEs reported by SOC were Gastrointestinal disorders in the both groups (4 patients in Rikkunshito group, 3 in Rikkunshito placebo group). The incidence of ADRs was 4.6% (constipation, diarrhoea, and faeces soft, 1 patient each) in Rikkunshito group and 1.6% (rush, 1 patient) in Rikkunshito placebo group. SAEs were reported from 2 patients in Rikkunshito placebo group (cervix carcinoma, rush). No death occurred in this study.