As part of its single technology appraisal (STA) process, the National Institute for Health and Care Excellence (NICE) invited the manufacturer of vedolizumab (Takeda UK) to submit evidence of the clinical effectiveness and cost-effectiveness of vedolizumab for the treatment of patients with moderate-to-severe active ulcerative colitis (UC). The Evidence Review Group (ERG) produced a critical review of the evidence for the clinical effectiveness and cost-effectiveness of the technology, based upon the company's submission to NICE. The evidence was derived mainly from the GEMINI1 trial, which is a Phase III, multicentre, randomised, doubleblind, placebo-controlled trial designed to evaluate the efficacy and safety of vedolizumab as an induction and maintenance treatment in patients with moderate-to-severe active UC who had an inadequate response to, loss of response to, or intolerance to conventional therapy or anti-Tumour necrosis factor-alpha (TNF-). The clinical evidence showed that vedolizumab performed significantly better than placebo in both the induction and maintenance phases. In the post-hoc subgroup analyses, patients with or without prior anti-TNF-therapy, vedolizumab performed better then placebo (p-value not reported). In addition, a greater improvement in health-related quality of life was observed in patients treated with vedolizumab and the frequency and types of adverse events were similar between the vedolizumab and placebo group but the evidence was limited to shortterm follow-up. There were a number of limitations and uncertainties in the clinical evidence base which warrant caution in its interpretation. In particular, the post-hoc subgroup analyses and high dropout rates in the maintenance phase of the GEMINI1 trial. The company also presented a network meta-analysis of vedolizumab versus other biologics therapies indicated for moderate-to-severe UC. However, the ERG considered that the results presented may have underestimated the uncertainty in treatment effects since fixed effects models were
Key Points for Decision Makers Vedolizumab appears to be more effective in both the induction and maintenance phase compared with placebo in patients with moderate-to-severe active ulcerative colitis who have had an inadequate response to, loss of response to, or intolerance to conventional therapy or TNF-inhibitor. However, the subgroup analyses for patients with or without prior TNF-inhibitor therapy were post-hoc and the study was not powered for these assessments. The findings of the network meta-analysis of vedolizumab versus TNF-inhibitor are limited due to a number of uncertainties in treatment effects. In addition, there is currently no head-to-head randomised 3 controlled trial comparing vedolizumab to other biologic therapies indicated for moderate-to-severe ulcerative colitis. The National Institute for Health and Care Excellence (NICE) Appraisal Committee recommended vedolizumab within its licence indication but only if the company provides vedolizumab with the discount agr...