Reversal of Frailty and Improvement in Quality of Life Following Advanced Therapy Initiation in Patients with Inflammatory Bowel Disease: A Prospective Cohort Study.

Background and Objectives: In recent years, frailty has emerged as a prognostic factor in inflammatory bowel diseases (IBD), particularly among patients with active disease. However, evidence regarding its reversibility after treatment optimization remains limited. This study aimed to assess frailty in active IBD and determine whether frailty status improved after 6 months of clinical management and the achievement of clinical remission. Materials and Methods: This prospective, single-center, observational cohort study included adults with active IBD requiring escalation to advanced therapy who achieved clinical remission at the 6-month follow-up. Patients were evaluated at baseline and after 6 months using a modified Fried frailty phenotype. Quality of life was assessed using the Short Inflammatory Bowel Disease Questionnaire (SIBDQ), and depressive symptoms were assessed using the Center for Epidemiologic Studies Depression (CES-D) scale. Univariate and multivariate logistic regressions were utilized to identify independent factors associated with frailty improvement. Results: The analysis included 54 patients (61.1% male; 42.6% with Crohn's disease). At baseline, 20.4% were classified as frail, 72.2% as pre-frail, and 7.4% as robust. Following 6 months of clinical management and the achievement of clinical remission, a 100% resolution of frailty was observed, with the robust cohort expanding to 42.6%. Significant improvements occurred across clinical parameters, including handgrip strength, 400 m walk times, and median SIBDQ scores (increasing from 4.4 to 5.9, p < 0.001) alongside a substantial decline in CES-D scores (p = 0.017). Multivariate logistic regression revealed that severe disease at baseline (aOR = 4.51, 95%CI: 1.26-16.18, p = 0.020), anti-TNF therapy initiation (aOR = 3.69, 95%CI: 1.04-13.18, p = 0.044), and higher baseline CES-D scores (aOR = 1.06, 95%CI: 1.00-1.13, p = 0.038) were independently associated with higher odds of frailty improvement. Conclusions: Among patients who achieved clinical remission, frailty and pre-frailty demonstrate substantial short-term improvement following advanced therapy. Functional and psychological recoveries are associated with successful control of baseline disease severity and systemic inflammation.