The proposed study will be a randomised, double blind, placebo-controlled trial to investigate the safety, tolerability, clinical activity, pharmacokinetics and pharmacodynamics of single intravenous infusion (one dose on Day 1) of GSK1070806 or placebo, in patients with active, moderate to severe CD. The primary objective of the study is to assess the safety and tolerability of a single dose IV administration of GSK1070806. A secondary objective will be to evaluate the effect of GSK1070806 in change of CDAI over time. Further secondary endpoints will include assessment of endoscopic response in patients at week 12. (Other secondary endpoints are detailed in Section 2.3).~30 patients will be recruited with randomisation of 2:1 active drug to placebo in multiple centres in the UK. After 30 patients have been recruited into the study the sample size will be reassessed and up to an additional 6 patients could be recruited (i.e. up to 36 patients). These additional patients will also be recruited with randomisation of 2:1 active drug to placebo.~An initial screening shall take place to identify patients diagnosed with CD for at least 3 months prior to screening, active disease based on CDAI score of 220-450 points and colonoscopic confirmation of active mucosal inflammation (SES-CD excluding narrowed component ≥6; or in patients with isolated ileal disease ≥4).~Patients who do not have colonoscopically demonstrated mucosal inflammation will be excluded even if they have MRI evidence of Crohn's disease more proximally in the small intestine. For inclusion, CDAI criteria have to be fulfilled within 7 days prior to dosing and colonoscopic SES-CD criteria has to be fulfilled with 28 days prior to dosing.~The induction of clinical activity will be assessed at week 12 by CDAI score, average clinical SF and/or AP scores as well as by colonoscopic assessment of baseline video images and week 12 video images.~The first 5 patients randomised into the trial will be dosed at least 3 days apart. At the interim analysis time point, a safety decision will be taken on the subsequent recruitment and patient spacing out strategy.
This trial aims to investigate the safety, tolerability and clinical activity of humanised antibody GSK1070806 delivered via intravenous infusion in the treatment of patients with moderate-to-severe Crohn's disease. 30-36 patients will be enrolled into the trial, with two thirds of the patients receiving active drug and one third receiving placebo. After 30 patients have been recruited into the study the sample size will be reassessed and up to an additional 6 patients could be recruited (i.e. up to 36 patients).