Ulcerative Colitis Clinical Trial
Official title:
Investigation of the Faecal Loss of Vedolizumab and Its Role in Influencing Serum Drug Levels, Outcomes and Response in Ulcerative Colitis
The purpose of this study is to study the loss of vedolizumab in stool in patients with
active ulcerative colitis (UC).
Patients with moderate-to-severe UC who are commencing induction therapy with vedolizumab
will be enrolled into a prospective study and stool will be collected for faecal vedolizumab
measurement at days 1, 4 and 7; and again at weeks 2, 6 and 14. They will also be evaluated
at three time-points (weeks 2, 6 and 14) for clinical and biochemical UC disease activity as
well as serum vedolizumab concentrations and anti-vedolizumab antibodies.
Primary objective
- To determine whether vedolizumab is present in significant quantities in the stool of
patients receiving induction therapy with vedolizumab for active UC.
Secondary objective (s)
- To evaluate whether the presence and quantity of vedolizumab in stool can be used to
predict primary non-response to vedolizumab.
- To explore whether a correlation exists between stool vedolizumab concentrations, serum
vedolizumab concentrations and UC disease activity and extent.
- To determine whether there is a correlation between stool and serum vedolizumab levels
and trafficking of Th1/Th17 effector memory CD4+ T-cells (the key pathogenic subset in
IBD) to the colon in UC.
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