This prospective observational study is going to develop and validate a prediction model of response to biologic agents and small molecular agents for Korean patients with ulcerative colitis.
In this prospective observational study, patients with confirmed ulcerative colitis, who are going to receive vedolizumab, ustekinumab, or tofacitinib will be enrolled after an informed consent. In the screening period, inclusion/exclusion criteria will be checked and if eligible and consented, demographic data, medical history, disease characteristics and disease activity data will be collected. Before drug administration (week 0), baseline lower GI endoscopy will be performed and colon tissues will be collected. Blood sample and fecal sample will also be collected. After induction therapy with each drug, clinical and endoscopic response will be evaluated at week 14 to week 16 and patients will be classified into responders non-responders. Combing clinical data, blood laboratory data, fecal inflammatory biomarker, genetic data, and colonic transcriptomic data, a prediction model for response to induction therapy will be developed and it will be validated in another patient group. Similarly, based on evaluation at week 52, a prediction model for maintenance response will also be developed and validated.
Study Type
OBSERVATIONAL
Enrollment
300
Drug administration and prospective follow-up for evaluating response
Asan Medical Center
Seoul, South Korea
RECRUITINGResponse to induction therapy
A decrease from baseline in the total Mayo score of at least 3 points and at least 30 percent, with an accompanying decrease in the subscore for rectal bleeding of at least 1 point or an absolute subscore for rectal bleeding of 0 or 1, together with Mayo endoscopic subscore of 0 to 1
Time frame: Week 14 to Week 16
Remission to induction therapy
Full Mayo score 0 to 2 + Any component of full Mayo score of 1 or less + Mayo endoscopic subscore of 0 to 1
Time frame: Week 14 to Week 16
Complete Mayo endoscopic subscore remission to induction therapy
Mayo endoscopic subscore of 0
Time frame: Week 14 to Week 16
Ulcerative colitis endoscopic index of severity remission to induction therapy
Ulcerative colitis endoscopic index of 0 to 1
Time frame: Week 14 to Week 16
Response to maintenance therapy
A decrease from baseline in the total Mayo score of at least 3 points and at least 30 percent, with an accompanying decrease in the subscore for rectal bleeding of at least 1 point or an absolute subscore for rectal bleeding of 0 or 1, together with Mayo endoscopic subscore of 0 to 1
Time frame: Week 52
Remission to maintenance therapy
Full Mayo score 0 to 2 + Any component of full Mayo score of 1 or less + Mayo endoscopic subscore of 0 to 1
Time frame: Week 52
Complete Mayo endoscopic subscore remission to maintenance therapy
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Mayo endoscopic subscore of 0
Time frame: Week 52
Ulcerative colitis endoscopic index of severity remission to maintenance therapy
Ulcerative colitis endoscopic index of 0 to 1
Time frame: Week 52