Change in peak plasma concentration (Cmax) [ Time Frame: up to 8 weeks ]
Change in time to Cmax (Tmax) [ Time Frame: up to 8 weeks ]
Change in area under the plasma concentration versus time curve (AUC) [ Time Frame: up to 8 weeks ]
Change in abdominal pain score (APS) [ Time Frame: up to 8 weeks ] From pre‐dose (trough) to 1.5 h postdose (peak) following the first of 3 daily doses of APD371; assessed daily to Day 56.
Change in average APS (AAPS) [ Time Frame: up to 8 weeks ] From screening and averaged weekly to Week 8.
Proportion of participants who were end‐of‐treatment responders [ Time Frame: up to 8 weeks ]
Proportion of participants who were weekly responders [ Time Frame: up to 8 weeks ]
Number of pain‐free days per week in each treatment cohort, based on responses to the APS [ Time Frame: up to 8 weeks ]
Frequency of pain rescue medication use in each treatment cohort [ Time Frame: up to 8 weeks ]
Effect of APD371 treatment on reduction in CRP levels at Week 4 and Week 8 [ Time Frame: up to 8 weeks ]
Effect of APD371 treatment on reduction in faecal calprotectin levels at Week 4 and Week 8 [ Time Frame: up to 8 weeks ]