Abrilumab (AMG 181) in Adults With Moderate to Severe Crohn's Disease

Crohn's Disease Clinical Trial

Official title: A Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety, Tolerability, and Efficacy of AMG 181 in Subjects With Moderate to Severe Crohn's Disease

Status Completed

Clinical Trial Summary

The primary objective of this study is to evaluate the efficacy of abrilumab as measured by the proportion of participants achieving Crohn's Disease Activity Index (CDAI) remission (CDAI < 150) after treatment for 8 weeks.

Clinical Trial Description

The study consisted of a 24-week double-blind treatment period, a 108-week open-label treatment period, and a 2-year safety follow-up period.

Participants who did not reach minimal improvement, or experienced disease worsening after initial response, had the option to receive open-label abrilumab 210 mg every 3 months (Q3M) beginning at double-blind period week 12 or after. Not reaching minimal improvement was defined as not having an improvement in CDAI score of ≥ 70 points from baseline on 2 consecutive visits (at or after week 8) at least 2 weeks apart. Disease worsening after week 8 (or week 12) response was defined as having an increase in CDAI score of ≥ 70 points from the week 8 (or week 12) CDAI score on 2 consecutive visits at least 2 weeks apart, and a CDAI score of > 150.

Participants were planned to be randomized in a 2:1:2:1 ratio to SC placebo or abrilumab at 21 mg, 70 mg (on day 1, week 2, week 4, and every 4 weeks thereafter until week 24), or 210 mg (on day 1 followed by placebo in weeks 2 and 4 and every 4 weeks thereafter until week 24), respectively. Due to a consistent discrepancy between the investigational product (IP) instruction manual (IPIM) description of vial positions and the actual vial positions in the IP package participants were initially randomized to 3 arms (placebo, 70 mg, and 210 mg) with a randomization ratio of 3:2:1. The study was temporarily paused while this issue was investigated. Once the discrepancy was corrected, Protocol Amendment 3 implemented, and affected participants completed their double-blind treatment period, the study resumed enrollment and randomization per protocol. Neither the randomization nor study blind was compromised and therefore the intent-to-treat principle was maintained. ;

Related Conditions & MeSH terms

• Crohn Disease
• Crohn's Disease

• NCT number: NCT01696396
• Study type: Interventional
• Source: Amgen
• Status: Completed
• Phase: Phase 2
• Start date: December 4, 2012
• Completion date: April 10, 2018