A Study to Investigate the Efficacy and Safety of Apraglutide Compared With Placebo in Adult Participants With Short Bowel Syndrome Associated With Intestinal Failure (SBS-IF)

This is a multicenter, double-blind, randomized, placebo-controlled, parallel-group, Phase 3 study to investigate the efficacy, safety, and tolerability of apraglutide compared with placebo in adults with SBS-IF. The study population will be representative of the SBS-IF general population and will include adult participants (≥18 years of age) who are dependent on, and who are receiving, PS at least 3 days per week. Eligible participants will be randomized 1:1 to receive SC apraglutide or placebo once weekly for 24 weeks stratified by anatomy (i.e., colon-in-continuity \[CIC\] or stoma) and baseline parenteral support (PS) volume (i.e., \<12 L/week or ≥12 L/week). The number of randomized participants in CIC and stoma will be monitored to ensure approximately equal numbers of CIC and stoma participants are randomized.

The study will consist of 4 periods: a Screening Period prior to randomization (including optimization and stabilization phases), a Treatment Period starting at randomization, a Safety Follow-up (SFU) Period after the last dose of IMP is completed, and an Anti-Drug Antibody (ADA) Follow-up Period beginning after the last dose of IMP.

All participants who complete the IMP treatment will be offered participation in an open label single arm apraglutide long-term extension (LTE) study. Participants who do not wish to continue onto the LTE study will be requested to complete an SFU Visit, which will occur 4 weeks (±1 week) after the last dose of IMP, after which they will transition into ADA Follow-Up period.