ISIS 2302-CS22, A 6-Week, Active-Controlled Clinical Study to Evaluate the Effectiveness of Alicaforsen (ISIS 2302) in Patients With Mild to Moderate Active Ulcerative Colitis

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Ionis Pharmaceuticals

Status and phase

Phase 2


Ulcerative Colitis


Drug: Alicaforsen

Study type


Funder types



ISIS 2302-CS22

Details and patient eligibility


This is a multi-center trial to test the safety, efficacy and tolerability of alicaforsen (ISIS 2302), a new type of drug called an antisense drug, in patients with mild to moderate active Ulcerative Colitis (UC). Alicaforsen is designed to reduce the production of a specific protein, called ICAM-1, a substance that plays a significant role in the increase of inflammation and is likely to be involved in inflammatory bowel diseases such as ulcerative colitis. The ISIS 2302-CS22 study will examine the effects of one of two dosages of alicaforsen delivered by enema over a six-week period as compared to an active control, mesalamine enema (The probability of receiving the alicaforsen formulation is 2:1). The primary objective of this study is to evaluate the percentage reduction in DAI at Week 6.




18+ years old


No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion criteria

Patients must meet the following criteria at screening to be eligible for enrollment:

  • Age greater than or equal to 18 years
  • Diagnosis of ulcerative colitis of at least 6 months duration
  • Current left-sided flare, defined as activity in the colon 5-50 cm from the anal verge, extending at least 15 cm proximal to the anal verge and confirmed by endoscopic evaluation within 14 days of baseline visit.
  • Baseline DAI score of 4-10 including abnormal endoscopic score

On at least one or more of the following treatments for ulcerative colitis prior to baseline visit:

  • Stable background oral mesalamine therapy for greater than or equal to 30 days, and/or
  • Stable background mercaptopurine for greater than or equal to 60 days prior to baseline, and/or
  • Stable azathiprine therapy for greater than or equal to 60 days prior to baseline
  • Written informed consent prior to performing screening evaluations.

Exclusion criteria

Patients who meet any of the following criteria at screening are not eligible for enrollment:

  • Bowel stricture, toxic megacolon, colonic dysplasia, adenoma or carcinoma
  • Uncontrolled hematologic, renal, hepatic, metabolic, psychiatric, CNS, pulmonary or cardiovascular disease, or sufficient level of disease that could interfere with the patient's ability to comply with protocol participation
  • Enteric pathogens or presence of Clostridium difficile toxin in stool
  • History of colon resection
  • Major surgical procedure within one month of baseline visit
  • Steroid or mesalamine enema within 14 days of baseline visit
  • Systemic steroids (including ACTH) within 30 days of baseline visit
  • Tumor necrosis factor-alpha (TNF-α) inhibitor treatment within 90 days of baseline visit
  • Non-steroidal anti-inflammatory agents (NSAIDs), including cyclooxygenase-2 (COX-2) inhibitors, within 14 days of baseline visit
  • Methotrexate, cyclosporin or thalidomide within 90 days of baseline visit
  • Any active infection currently requiring treatment
  • Malignancy within 5 years except for squamous cell or basal cell cancers of the skin
  • Current infectious, ischemic, or immunological disease with gastrointestinal involvement
  • ISIS 2302 treatment within 12 months of baseline visit
  • History of allergy to mesalamine
  • Treatment with an investigational or off-label drug within 90 days of screening or currently in long-term follow up for another investigational treatment protocol

Trial contacts and locations



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