A Study to Evaluate Adverse Events and Change in Disease Activity in Participants Between 18 to 75 Years of Age Treated With Intravenous (IV) Infusion and Subcutaneous (SC) Injections of ABBV-154 for Moderately to Severely Active Crohn's Disease

Study Purpose

Crohn's disease (CD) is a long-lasting condition causing inflammation that can affect any part of the gut. CD may cause tiredness, loose stools with or without bleeding, abdominal pain, weight loss, and fever. This study evaluates how safe and effective ABBV-154 is in participants treated for moderately to severely active CD. Adverse events and change in the disease activity will be assessed. ABBV-154 is an investigational drug being evaluated for the treatment of CD. In the induction period, there is a 1 in 5 chance that participants will be assigned to placebo. Depending on the dose received in the induction period, there is a 1 in 2 or 1 in 3 chance that participants will be assigned to placebo in the maintenance period. Around 265 participants 18-75 years of age with moderately to severely active CD will be enrolled in the study at approximately 200 sites worldwide. The study is compromised of a 12-week double-blind, placebo-controlled induction period, followed by either a 12-week double-blind re-induction period for non-responders or a 40-week double-blind placebo-controlled maintenance period for responders. In the maintenance period, responders will be randomized to receive subcutaneous placebo or ABBV-154 in 2 different doses every other week. Participants in the placebo group who are initial responders will receive ABBV-154 in the maintenance period. There may be higher treatment burden for participants in this trial compared to their standard of care due to study procedures. Participants will attend regular visits during the study at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests, checking for side effects and completing questionnaires.

Recruitment Criteria

Accepts Healthy Volunteers Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms	No
Study Type An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes. An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes. Searching Both is inclusive of interventional and observational studies.	Interventional
Eligible Ages	18 Years - 75 Years
Gender	All

More Inclusion & Exclusion Criteria

Inclusion Criteria:

- Confirmed diagnosis of Crohn's Disease (CD) for at least 3 months prior to Baseline of the Induction Period.

- Crohn's Disease Activity Index (CDAI) score 220 to 450 at Baseline of the Induction Period.

- Endoscopic evidence of mucosal inflammation as documented by an Simple Endoscopic Score for Crohn's Disease (SES-CD) of >= 6 for ileocolonic or colonic disease or SES-CD of >= 4 for isolated ileal disease as scored by a central reader.

All eligible scores must exclude the presence of narrowing component.

- Demonstrated intolerance or inadequate response to one or more of the following biologic agents: infliximab, adalimumab, certolizumab pegol, vedolizumab, natalizumab, ustekinumab, or risankizumab.

Exclusion Criteria:

- Participants with prior intolerance to adalimumab.

Trial Details

Trial ID: This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.	NCT05068284
Phase Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans. Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data. Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs. Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.	Phase 2
Lead Sponsor The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.	AbbVie
Principal Investigator The person who is responsible for the scientific and technical direction of the entire clinical study.	ABBVIE INC.
Principal Investigator Affiliation	AbbVie
Agency Class Category of organization(s) involved as sponsor (and collaborator) supporting the trial.	Industry
Overall Status	Recruiting
Countries	Australia, Austria, Belgium, Bulgaria, Canada, Czechia, France, Germany, Greece, Hungary, Israel, Italy, Japan, Korea, Republic of, Mexico, Netherlands, New Zealand, Poland, Portugal, Puerto Rico, Slovakia, Spain, Taiwan, United Kingdom, United States
Conditions The disease, disorder, syndrome, illness, or injury that is being studied.	Crohn's Disease

Arms & Interventions