Please select the eligibility criteria that correspond to the clinical trial below.
Title: Multicenter, Randomized, Double-Blind, Active Controlled Trial Comparing REMICADE� (Infliximab) and REMICADE Plus Azathioprine to Azathioprine in the Treatment of Patients With Crohn's Disease Naive to Both Immunomodulators and Biologic Therapy
Brief Summary: The purpose of this study is to assess the safety and effectiveness of three different treatments for patients with Crohns 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.


Options:
A: Inclusion Criteria:

* Definitive diagnosis of Crohn's disease confirmed (at least 3 months prior to study entry) either by radiological, endoscopic or histological evidence, affecting the terminal ileum (L1), colon (L2) or ileocolon (L3\*. \*Vienna Classification (1998)
* Active Crohn's disease (≥ 220 and ≤ 450) scored over the 7 days prior to the first dose of study drug.
* Male and female aged 18 years or above at screening.
* Patients who meet all concomitant medication criteria in the protocol specified table. For all drugs being taken at screening, the patient should be able to remain on a stable dose throughout the duration of the study, although steroids may be tapered starting at Weeks 8 to 12.

Exclusion Criteria:

* Crohn's Disease Related
* Fistula abscess present at screening.
* Stricturing type disease with symptoms or signs of non-inflammatory mechanical obstruction or bowel perforation in last 3 months.
* Short bowel syndrome.
* Functional colostomy or ileostomy (note: patients who have had a temporary stoma in the past, which has been reversed, are eligible to enter the study).
* Positive stool laboratory results for enteric pathogens.
B: Inclusion Criteria:

* Have moderately to severly active Crohn's disease or fistulizing Crohn's disease for at least 6 weeks' duration with a Crohn's disease activity index (CDAI) score of \>=220 and \<=450
* In Population 1, participants must have had active disease despite treatment with 5-ASA compounds, antibiotics, corticosteroids, and/or immunomodulators, including anti-TNF agents. In Population 2, participants must have had active disease and have failed to respond to infliximab at the maximum approved dose and treatment regimen for Crohn's disease as defined in the US package insert.

Exclusion Criteria:

* Have local manifestations of Crohn's disease such as strictures, abscesses, or other disease complications for which surgery might be indicated
* Had intra-abdominal surgery within 6 months prior to entering the study
* Have received treatment with parenteral nutrition (ie, introduction of nutrition into the body via a route other than the mouth) (total parenteral nutrition \[TPN\]) within 6 weeks of baseline
C: Inclusion Criteria:

* Have had active psoriatic arthritis for at least 6 months prior to administration of first study injection
* Have an active plaque psoriasis (defined as a lesion of at least 2 cm in diameter), but not in armpits, on chest between breasts or groin
* Women of childbearing potential and all men must be using an effective method of birth control measures (eg, abstinence, oral contraceptives, intrauterine device, barrier method with spermicide, or surgical sterilization) and must agree to continue to use such measures until 12 months after receiving the last injection of study agent
* Have an active arthritis despite disease-modifying anti-rheumatic drugs (DMARD) such as leflunomide, gold, sulfasalazine, but not including methotrexate) or non-steroidal anti-inflammatory agents (NSAID) such as aspirin, ibuprofen, naproxen) therapy. DMARD therapy is defined as taking a DMARD for at least 3 months, or evidence of not tolerating DMARD. NSAID therapy is defined as taking an NSAID for at least 4 weeks
* If the patients are using methotrexate (MTX), they should have started treatment at least 3 months prior to the first administration of study agent and should have no serious toxic side effects attributable to MTX
* Have no signs or symptoms suggestive of active tuberculosis upon medical history, physical examination and chest X-ray

Exclusion Criteria:

* Have received DMARDs, other than methotrexate, within 4 weeks prior to the randomization visit
* Have used any biologic within the previous 3 months or 5 times the half-life of the biologic, whichever is longer
* Have received any oral, intravenous or intramuscular medications/treatments that could affect psoriasis (including, but not limited to, oral or injectable corticosteroids, retinoids, 1,25 dihydroxy vitamin D3 and analogues, psoralens, sulfasalazine, hydroxyurea, fumaric acid derivatives, or phototherapy) within 4 weeks of the randomization visit and/or have used topical medications/treatments that could affect psoriasis (eg, corticosteroids, anthralin, calcipotriene, topical vitamin D derivatives, retinoids, tazarotene, methoxsalen, trimethylpsoralens) within 2 weeks of the randomization visit
* Have a history of chronic or recurrent infectious disease, including but not limited to chronic renal infection, chronic chest infection (eg, bronchiectasis), recurrent urinary tract infection (recurrent pyelonephritis or chronic nonremitting cystitis), or open, draining, or infected skin wounds or ulcers
* Have a history of latent or active granulomatous infection, including tuberculosis (TB), histoplasmosis, or coccidioidomycosis, prior to screening
* Have current signs or symptoms of severe, progressive, or uncontrolled kidney, liver, blood, intestinal, hormonal, lung, heart, nervous, brain, or psychiatric disease
* Have any known cancer or have a history of cancer within the previous 5 years (with the following exception: have had basal cell carcinoma or squamous cell carcinoma in situ of the skin that has been treated, with no evidence of recurrence)
D: Inclusion Criteria:

* Diagnosis of Crohns Disease for at least 6 weeks
* Moderate to severe disease activity (CDAI \>= 220 and \<=450)
* No history of azathioprine, 6-MP (6 Mercaptopurine), or biologic treatments
* Are either: Corticosteriod-dependent, OR considered for a 2nd (or greater) course of corticosteriod, OR 5-ASA failures, Or Budesonide failures

Exclusion Criteria:

* History of abdominal surgery within the last 6 months
* Have an ostomy or stoma \[An operation to create an opening from an area inside the body to the outside\]
* Are pregnant, nursing, or planning pregnancy (both men and women)
* Serious simultaneous illness that could interfere with study participation
* Use of any investigational drug within 30 days
* Have a concomitant diagnosis or any history of congestive heart failure
* Weigh more than 140 kilograms (or 310 pounds)

Answer: D