BACKGROUND AND AIMSThis study aimed to identify predictors and estimate time to teduglutide response among adult patients with short bowel syndrome with intestinal failure (SBS-IF) dependent on parenteral support (PS).METHODSPost-hoc analysis was performed on individual patient data from teduglutide-treated patients in the phase III teduglutide trial STEPS and the STEPS-2 extension. Response was defined as ≥20% PS volume reduction from baseline for two consecutive visits. Early responders experienced the reduction at 20 and 24 weeks during STEPS while late responders experienced the reduction during STEPS-2. Timing and predictors for response were assessed among the treated population using Cox proportional hazard model. Time to response was compared in aetiological subgroups using Kaplan-Meier analysis. Patient characteristics and time to response were compared between early vs. late responders.RESULTSA total of 34 patients were included in this analysis; overall median time to response was 4.3 months. The presence of stoma predicted a positive response to teduglutide (hazard ratio [HR]: 5.6; 95% confidence interval [CI]: 1.4-21.9; p = 0.013). Vascular disease (vs. inflammatory bowel disease [IBD]) as cause of major intestinal resection (HR: 0.2; 95% CI: 0.0-0.8; p = 0.015), presence of ileocecal valve (HR: 0.1; 95% CI: 0.0-0.8; p = 0.047), and female sex (HR: 0.3; 95% CI: 0.1-1.0; p = 0.026) are negatively associated with response. In subgroup analyses, patients with IBD (vs. vascular disease), with (vs. without) a stoma, and without (vs. with) colon-in-continuity had a shorter time to response (all p < 0.05). The mean times to response were 3.6 (standard deviation (SD): 1.1) months for early responders (n = 27) and 10.0 (SD: 6.1) months for late responders (n = 7). Fewer early responders had colon-in-continuity (51.9%) and ileocecal valve (0.0%) compared to late responders (100% and 28.6%, respectively; both p < 0.05). Early responders had a lower mean percentage of colon remaining compared to late responders (24.6% vs. 57.1%, respectively; p = 0.016).CONCLUSIONSTime to response to teduglutide depends on bowel anatomy and SBS-IF aetiology. IBD, presence of a stoma, and absence of ileocecal valve were associated with earlier response to teduglutide. These findings may enhance management of patients with SBS-IF; however, due to sample size limitations, additional studies are needed to confirm these findings.