Please select the eligibility criteria that correspond to the clinical trial below.
Title: Phase 3: Randomised Controlled Trial of Rituximab in Active Ulcerative Colitis
Brief Summary: There is broad support for the hypothesis that Ulcerative colitis is an auto-immune disease. Rituximab is an antibody protein that removes a subgroup of white blood cells (B lymphocytes) from the circulation. These cells have the capacity to generate the auto-antibodies that typify auto-immune disease. Although Rituximab has been mainly used for treating B lymphocyte malignancies (lymphoma) it has also been used with promising results in Rheumatoid arthritis and has an excellent safety record. This is a small placebo-controlled trial to assess its efficacy and safety in patients with steroid-resistant active ulcerative colitis.


Options:
A: Inclusion Criteria:

* Men or women 18 years or older
* Ulcerative colitis for at lease 3 months
* Moderate to severe active ulcerative colitis
* Inadequate response or intolerance to standard ulcerative colitis treatment
B: Inclusion Criteria:

1. Patients over age of 18 years who are capable of providing written informed consent.
2. Confirmed diagnosis of ulcerative colitis by conventional clinical, endoscopic and histological criteria.
3. Failure of response to at least two weeks of oral prednisolone 40mg/day.
4. Active colitis as assessed by a Mayo score \[21\] of 6-12 inclusive (see Appendix 1)

Exclusion Criteria:

1. Patients under 18 or unable to give informed consent.
2. Patients in their first attack of ulcerative colitis.
3. Patients with severe ulcerative colitis as defined by presence of any of: temperature \>37.5oC, pulse rate \>100, focal severe or rebound abdominal tenderness, haemoglobin \< 10.0g/dl, serum albumin \<3.5 g/dl, transverse colon diameter greater than 5.0cms on plain abdominal X ray.
4. Patients who are pregnant, post partum (\<3months) or breast feeding
5. Patients who are at risk of pregnancy and not using a reliable form of contraception (oral contraceptive and barrier or barrier plus spermicide).
6. Patients with a stoma
7. Positive stool culture for pathogens or test for C difficile at screening within 7 days prior to trial entry
8. Patients for whom a baseline Mayo score can not be reliably calculated: frequent use of laxatives (for proximal constipation) or antimotility agents (for control of diarrhoea)
9. Any change to maintenance medication for ulcerative colitis: azathioprine or 6-mercaptopurine within previous 3 months or 5-aminosalicylates within previous one month
10. Any change to rectal therapy for colitis within the previous two weeks.
11. Participation in other trials in the last 3 months.
12. Serious intercurrent infection or other clinically important active disease (including renal and hepatic disease)

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C: Inclusion Criteria:

* Confirmed diagnosis of ulcerative colitis and in remission for at least 1 month
* Greater than 18 years of age

Exclusion Criteria:

* Allergy/intolerance to aspirin, mesalamine, or other salicylates
* Prior bowel surgery other than appendectomy
* Pregnancy, at risk of pregnancy, or lactating
* HIV or hepatitis B or C
D: Inclusion Criteria:

* Ulcerative colitis (UC) confirmed on endoscopy
* Moderately to severely active UC (Mayo score 6-12)

Exclusion Criteria:

* Current use of anti-TNF agents

Answer: B