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Trial Comparing Infliximab and Infliximab and Azathioprine in the Treatment of Patients With Crohn's Disease na�ve to Both Immunomodulators and Biologic Therapy (Study of Biologic and Immunomodulator Naive Patients in Chrohn's Disease: SONIC

05:45 EDT 21st April 2014 | BioPortfolio


The purpose of this study is to assess the safety and effectiveness of three different treatments for patients with Crohn's disease who have not responded to previous treatment with a group of drugs commonly used to treat Crohn's Disease (5-ASA) and corticosteroids. Patients will receive either infliximab (a drug used to treat autoimmune diseases) or azathioprine (an immunosuppressant or drug used to suppress the immune system) or a combination of both for up to 34 weeks. This research study will involve approximately 500 patients. The main study involves up to 34 weeks (approximately 8 months). A study extension of an additional 20 weeks (approximately 5 months) is optional for patients who successfully complete the main study. A country-specific study extension of open label infliximab treatment for an additional 1 year is optional for patients who successfully complete the main study extension.


Crohn's disease is characterized by inflammation (the changes that happen when tissues in the body are injured) and ulceration (open sores) of the intestines. Crohn's disease is treated with medications that decrease inflammation, and reduce diarrhea, abdominal pain and other symptoms of Crohn's disease. In addition, Crohn's disease can be treated with medications that suppress the immune system (the body system involved in inflammation and infections) or with surgery. This study will investigate the effectiveness of infliximab and azathioprine in the treatment of patients with moderate-to-severe Crohn's disease. Infliximab is currently approved by the FDA for the treatment of both Crohn's disease and rheumatoid arthritis. Azathioprine, which is an investigational drug, has not been approved by the FDA for the treatment of Crohn's disease, but it is a well-established therapy that has been used for many years to treat Crohn's disease. This study seeks to determine whether infliximab, azathioprine, or the combination of both drugs would be the most appropriate treatment for Crohn's disease patients who have not responded well to certain drugs called 5-ASA drugs (e.g. Asacol, Pentasa, sulfasalazine) and/or require frequent treatment with corticosteroids.

This research study will involve approximately 500 patients. Patients may participate in the main study for up to 34 weeks (approximately 8 months). During the main study, patients will be asked to visit the study center for 10 visits. If patients enroll into the extension of the study, the total time for participation may be up to 54 weeks (approximately 13 months). Patients enrolled in the Study Extension will be asked to visit the study center for an additional 5 visits. A country-specific (EU and Israel only), prospective, multi-center, open-label extension of the study will further evaluate the long-term safety and efficacy of scheduled maintenance therapy with infliximab in patients with Crohn's Disease. Patients who have completed treatment through Week 50 in the SONIC main study and who, in the opinion of the investigator, would benefit from infliximab treatment may enter the open-label extension. Patients will be randomly assigned to one of three treatment groups (either infliximab plus placebo capsules, infliximab plus azathioprine, or azathioprine plus placebo infusions - there is no possibility of being assigned to placebo only in this trial - patients will receive one or both of these medications) at the beginning of the study. Oral medication will be taken daily. There are 5 infusion (which will be either infliximab or placebo) visits during the main study.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Crohn Disease


infliximab (IFX) placebo infusion; azathioprine (AZA) caps, infliximab infusion; AZA placebo caps, infliximab (IFX) infusion; azathioprine (AZA) caps




Centocor Ortho Biotech Services, L.L.C.

Results (where available)

View Results


Medical and Biotech [MESH] Definitions

Use of any infusion therapy on an ambulatory, outpatient, or other non-institutionalized basis.

Misunderstanding among individuals, frequently research subjects, of scientific methods such as randomization and placebo controls.

Fluid propulsion systems driven mechanically, electrically, or osmotically that are used to inject (or infuse) over time agents into a patient or experimental animal; used routinely in hospitals to maintain a patent intravenous line, to administer antineoplastic agents and other drugs in thromboembolism, heart disease, diabetes mellitus (INSULIN INFUSION SYSTEMS is also available), and other disorders.

Portable or implantable devices for infusion of insulin. Includes open-loop systems which may be patient-operated or controlled by a pre-set program and are designed for constant delivery of small quantities of insulin, increased during food ingestion, and closed-loop systems which deliver quantities of insulin automatically based on an electronic glucose sensor.

An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.

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