Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 3 International, Multicenter, Double-blind, Placebo-controlled Study of the Safety, Efficacy, and Tolerability of Intravenous Antegren (Natalizumab) in Subjects With Moderate to Severely Active Crohn's Disease
Brief Summary: The purpose of this study is to determine the safety and efficacy of natalizumab in individuals diagnosed with moderately to severely active Crohn's disease. It is thought that natalizumab may stop the movement of certain cells, known as white blood cells, into bowel tissue. These cells are thought to cause damage in the bowel leading to the symptoms of Crohn's disease.


Options:
A: Inclusion Criteria:

1. Age 18 to 80
2. Diagnosis of moderately to severely active Crohn's disease (CD)
3. CD involvement of the ileum and/or colon
4. Demonstrated, over the previous 5 year period, an inadequate response to, loss of response to, or intolerance of at least 1 of the following agents, within protocol-specified parameters:

   1. Immunomodulators
   2. Tumor necrosis factor-alpha (TNFα) antagonists
   3. Corticosteroids
5. May be receiving a therapeutic dose of conventional therapies for irritable bowel disease (IBD) defined by the protocol

Exclusion Criteria

1. Evidence of abdominal abscess at the initial screening visit, other than a minimum of 10 aphthous ulcerations involving a minimum of 10 contiguous cm of intestine
2. Extensive colonic resection, subtotal or total colectomy
3. History of \>3 small bowel resections or diagnosis of short bowel syndrome
4. Ileostomy, colostomy, or known fixed symptomatic stenosis of the intestine
5. Have received non permitted IBD therapies within either 30 or 60 days, depending on the medication, as stated in the protocol
6. Chronic hepatitis B or C infection
7. Active or latent tuberculosis
B: INCLUSION CRITERIA: Participants must meet the following criteria for inclusion in the trial:

* Must sign and date the informed consent form
* At least 18 years of age
* Documented diagnosis (endoscopic, surgical or x-ray) of ulcerative colitis (UC)
* Mild to moderate ulcerative colitis indicated by Disease Activity Index score of greater than or equal to 4 and less than or equal to 10
* Unless the patient is intolerant of oral 5-ASA therapy, patient must be treated with a minimum of 2 gm daily of an oral 5-ASA agent for a minimum of 4 weeks during the current exacerbation of ulcerative colitis or immediately prior to study entry
* If treated with oral corticosteroids, dose must not exceed 20 mg per day of Prednisone or equivalent
* If treated with corticosteroids, dose must be stable for 4 weeks prior to study entry and remain on same dose throughout
* If treated with 6-mercaptopurine or azathioprine, must have been on medication for 4 months and a stable dose for 2 months prior to study entry
* If a female of childbearing age, the participant must have a negative serum pregnancy test and have been using a medically approved form of contraceptive birth control for 3 months prior to enrollment. Participants, both male and female, must also be willing to use medically approved contraceptive birth control (at least one barrier method) throughout the study
* If treated with rectal therapy, dose must be stable for 2 weeks prior to study entry and remain on same dose throughout

EXCLUSION CRITERIA: Participants will be ineligible for participation in the trial if they meet any of the following criteria:

* Severe ulcerative colitis indicated by Disease Activity Index score of greater than 10
* Class III or IV congestive heart failure by NYHA classification system
* Allergy to thiazolidinediones
* Presence of any medical condition with an expected survival of less than 1 year
* Participants receiving therapy with cyclosporin, anti-TNF therapy, or methotrexate within the last 2 months of screening
* Positive stool culture for enteric pathogens (salmonella, shigella, and campylobacter), positive C.difficile toxin, or positive stool ova and parasite exam
* Positive proteinuria by urine dipstick
* History of chronic liver disease or baseline liver chemistries greater than the upper limit of normal
* Diabetes mellitus requiring hypoglycemic agents
* Participation in study of experimental therapy within 2 months of first screening visit
* Has any of the following laboratory abnormalities: WBC \< 3,000 per uL, Neutrophil \< 1,000 cell/cu.mm, Platelets \<75,000 per uL, INR \> 1.2
* Participant is female and is pregnant or currently breastfeeding
C: Male and female patients at least 18 years of age who have at least a six-month history of Crohn's disease and who are currently experiencing moderate to severely active Crohn's disease. Women must not be breastfeeding or pregnant, and must not become pregnant during this study. Patient enrollment requires previous participation in study AN100226-CD301 (please refer to the clinical trial listing for CD301).
D: Male and female patients at least 18 years of age who have at least a six-month history of Crohn's disease and who are currently experiencing moderately to severely active Crohn's disease. Women must not be breastfeeding or pregnant, and must not become pregnant during the study.

Answer: D