AI Article Synopsis
- The study investigated the efficacy of histo-endoscopic mucosal improvement (HEMI) versus endoscopic improvement (EI) in patients with ulcerative colitis (UC) during two evaluation periods: 14 weeks post-induction and 1 year post-maintenance.
- An analysis of 620 participants from the VARSITY trial showed that although similar rates of clinical remission were achieved between those who attained HEMI and EI at the 1-year mark, HEMI was linked to greater reductions in disease activity and inflammatory markers like fecal calprotectin and C-reactive protein.
- Ultimately, HEMI did not provide extra prognostic benefits predicting one-year outcomes compared to EI, yet it did indicate lower clinical disease
Article Abstract
Background And Aims: Evaluating histological outcomes in ulcerative colitis [UC] has become common in recent clinical trials. In this study, we explored the additional value of the combined endpoint of histo-endoscopic mucosal improvement [HEMI] compared with endoscopic improvement [EI] at post-induction [Week 14] and post-maintenance [1 year].
Methods: This post hoc analysis included 620 UC participants with available data from the VARSITY trial. Participants achieving post-induction and post-maintenance HEMI [Mayo endoscopic subscore ≤1 and Geboes score <3.2] were compared across clinical outcomes, patient-reported outcomes [PROs], and inflammatory markers. Univariate analyses were performed to identify variables associated with the outcome of interest. Multivariate analyses included covariates with a p <0.05 on univariate analyses.
Results: Among the 468 patients with 1-year data available, a total of 166 [35.5%] attained HEMI and 209 [44.7%] attained EI at post-induction. No difference in achievement of clinical remission [CR] at 1 year was observed among those who attained post-induction HEMI vs EI (121/166 [72.9%] vs 147/209 [70.3%], p = 0.903). Similar findings were observed for the outcome of 1-year treatment failure (45/166 [27.1%] vs 55/209 [26.3%], p = 0.781). Patients who achieved HEMI at post-induction had lower total and partial Mayo scores and had the largest improvement from baseline. Faecal calprotectin and C-reactive protein [CRP] were also significantly lower among HEMI achievers at post-induction [p <0.001]. Similar findings were observed at post-maintenance.
Conclusions: In this post hoc analysis, at post-induction, HEMI did not demonstrate additional prognostic value in predicting 1-year outcomes over EI. However, HEMI was associated with lower clinical disease activity at post-induction and at 1 year compared with endoscopic or histological outcomes in isolation.
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