for people ages 18-80 (full criteria)
at La Jolla, California and other locations
study started
estimated completion



The study consists of 3 sub-studies, as follows: - Sub-study 1 (Randomized, double-blind, placebo controlled study) to evaluate the efficacy and safety of risankizumab versus placebo as maintenance therapy in participants with moderately to severely active Crohn's disease (CD) who responded to risankizumab induction treatment in Study M16-006 or Study M15-991 - Sub-study 2 (Randomized, exploratory maintenance study) to evaluate the efficacy and safety of two different dosing regimens for risankizumab as maintenance therapy in participants who responded to induction treatment in Study M16-006 or Study M15-991; - Sub-study 3 (Open-label, long-term extension study) to evaluate long-term safety of risankizumab in participants who completed Sub-study 1, Sub-study 2 or the Phase 2, open-label extension study M15-989.

Official Title

A Multicenter, Randomized, Double-Blind, Placebo Controlled 52-Week Maintenance and an Open-Label Extension Study of the Efficacy and Safety of Risankizumab in Subjects With Crohn's Disease Who Responded to Induction Treatment in M16-006 or M15-991; or Completed M15-989


Crohn's Disease risankizumab ABBV-066 BI 655066 Crohn Disease Antibodies, Monoclonal risankizumab IV risankizumab SC Maintenance Risankizumab Dose 2 (Sub-Study 2) Double-blind Risankizumab Dose 1 (Sub-Study 1) Maintenance Risankizumab Dose 1 (Sub-Study 2) Double-blind Risankizumab Dose 2 (Sub-Study 1) Open-label Risankizumab (Sub-Study 3)


You can join if…

Open to people ages 18-80

  • Subjects who have entered and completed Study M16-006 or Study M15-991 or Study M15-989.
  • Subjects have completed the study M16-006 or M15-991 and have achieved clinical response.

You CAN'T join if...

  • Subject is considered by the Investigator, for any reason, to be an unsuitable candidate for the study .
  • Subject who has a known hypersensitivity to risankizumab or the excipients of any of the study drugs or the ingredients of CHO, or had an AE during Studies M16-006, M15-991 or M15-989 that in the Investigator's judgment makes the subject unsuitable for this study.
  • Subject is not in compliance with prior and concomitant medication requirements throughout Studies M16-006, M15-991 or M15-989.
  • Confirmed positive urine pregnancy test at the Final Visit of Study M16-006, Study M15-991 or Study M15-989.
  • Have a known history of lymphoproliferative disease, including lymphoma, or signs and symptoms suggestive of possible lymphoproliferative disease, such as lymphadenopathy and/or splenomegaly.


  • UC San Diego Health Systems /ID# 155555 accepting new patients
    La Jolla California 92093 United States
  • Southern California Res. Ctr. /ID# 211991 accepting new patients
    Coronado California 92118-1408 United States


accepting new patients
Start Date
Completion Date
Phase 3
Study Type
Last Updated