Efficacy and Tolerability Study of Natura-Alpha in the Treatment of Patients With Active Ulcerative Colitis

This study is to evaluate the efficacy and tolerability of multiple oral doses of Natura-alpha capsule administered to patients with active ulcerative colitis. This will be a randomized, double-blind, placebo-controlled, parallel-design study. Up to 75 patients will complete this study (20 to 25 patients per treatment group) at approximately 10-12 clinical sites in the Unites States. Patients will be assigned at a 1:1:1 ratio to receive placebo, Natura-alpha 10 mg or Natura-alpha 20 mg, b.i.d. Replacement patients may be added, pending Sponsor approval, if it appears that less than 60 patients will complete the study.

Study Overview

• Status: Unknown
• Conditions: Ulcerative Colitis
• Intervention / Treatment: Drug: placebo capsule; Drug: 10 mg Natura-alpha capsule and 10 mg placebo capsule; Drug: 2 x 10 mg Natura-alpha capsules

Detailed Description

This will be a randomized, double-blind, placebo-controlled, parallel-design study. Eligible patients will have moderate to severe ulcerative colitis, defined as:

• A Disease Activity Index (DAI) score of 6 to 10 (inclusive);
• Endoscopic evidence of active ulcerative colitis (DAI mucosal appearance sub score of ≥2) as assessed by flexible sigmoidoscopy unless colonoscopy is clinically indicated;
• Rectal bleeding (DAI sub score of ≥1);
• Physician's Global Assessment (PGA) of moderate disease (DAI sub score ≥2). Patients will be randomized to receive placebo, 10 mg Natura-alpha or 20 mg Natura-alpha. Patients will self-administer their assigned dose orally for 28 consecutive days, twice per day (b.i.d) at approximately 8:00 am and 8:00 pm.

The effectiveness and safety of Natura-alpha will be evaluated at baseline, and after 7, 14 and 28 days of treatment. Additional follow-up measurements will take place 7 and 28 days post cessation of treatment (Day 35 and Day 56, respectively). Stool samples for fecal calprotectin (FC) tests and optional blood samples (15 ml) for cytokine tests will be collected and analyzed at sponsor-selected sites and lab for exploratory analyses to be performed at a later date.

Clinical response will be assessed by the Physician's Global Assessment (PGA) on the basis of sigmoidoscopy (Walkiewicz, Werlin et al. 2008) and mucosal appearance (DAI category). Sigmoidoscopy including histopathological examination to assess disease severity and changes in tissue inflammation will be conducted before and after treatment (Day 1, Day 28) by the same endoscopist at each site and read by one sponsor selected central pathologist. Truelove-Richards histological grading system will be applied for disease histological scoring (Pullan, Rhodes et al. 1994; Zhong, Huang et al. 2005; Liang and Ouyang 2008). Safety labs and adverse events (AEs) will be monitored for the duration of the study (including the 7 day follow up visit).

• Study Type: Interventional
• Enrollment (Anticipated): 75
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • California
    • Anaheim, California, United States, 92801
      • Advanced Clinical Research Institute
  • Maryland
    • Chevy Chase, Maryland, United States, 20814
      • Chevy Chase Clinical Research
  • Missouri
    • Kansas City, Missouri, United States, 64131
      • Kansas City Gastroenterology and Hepatology
  • New Jersey
    • Egg Harbor, New Jersey, United States, 08324
      • AGA Medical Research Associates, LLC
  • New York
    • Great Neck, New York, United States, 11021
      • Long Island Clinical Research Associates, LLP
    • Poughkeepsie, New York, United States, 12601
      • Premier Medical Group of the Hudson Valley
  • Ohio
    • Cincinnati, Ohio, United States, 45219
      • Consultants for Clinical Research
    • Fairfield, Ohio, United States, 45014
      • Consultants for Clinical Research
  • Tennessee
    • Nashville, Tennessee, United States, 37205
      • Nashville Medical Research Institute
  • Wisconsin
    • Milwaukee, Wisconsin, United States, 53215
      • Wisconsin Center for Advanced Research, LLC

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Females must be of non-childbearing potential evidenced by being surgically sterile, postmenopausal for at least 12 months or be using acceptable contraception methods.

• Subject is require to meet one of the following criteria:

  1. Newly diagnosed patients with moderate to severe ulcerative colitis evidenced by endoscopy and histopathology, who have never been medically treated for ulcerative colitis, or
  2. Patients with moderate to severe disease, as defined by a Disease Activity Index (DAI) score of 6-10 (inclusive) at the Baseline Visit (assessed at screening and verified at Day 1), with a negative evaluation of the terminal ileum within 3 years of the screening visit, or
  3. Patients with active ulcerative colitis who are refractory or intolerant to therapies of 5-ASA, steroids, immunosuppressants or anti-TNF-alpha.
• Endoscopic evidence of active mucosal disease as assessed by flexible sigmoidoscopy, with a DAI mucosal appearance sub score ≥ 2.
• DAI rectal bleeding sub score of ≥ 1.
• Physician's Global Assessment (PGA) DAI sub score ≥ 2.
• Ability to adhere to the study visit schedule and other protocol requirements.
• Ability to provide voluntary written informed consent.
• Adequate cardiac, renal and hepatic function as determined by site principal investigator and demonstrated by screening laboratory evaluations, and questionnaires, and physical examination results that are within normal limits.

Exclusion Criteria:

• History of colonic or rectal surgery.
• Pregnant or breast-feeding.
• Diagnosis of diabetes, heart failure, unstable angina, hepatic cirrhosis, kidney failure, or any other unstable medical condition.
• Known hypersensitivity to Natura alpha or any of the drug excipients.
• Active and chronic infections.
• Severe ulcerative colitis indicated by Disease Activity Index score > 10.
• Patients with ulcerative proctitis (disease limited to less than 15 cm from the anal verge).
• Use of any vaccine or any other immunostimulator within 4 weeks prior to the screening visit. .
• Use of > 2.4 gm mesalamine or equivalent within 2 weeks prior to the screening visit.
• Use of oral corticosteroids for more than 3 days during the two weeks prior to the screening visit.
• Use of corticosteroid or 5-ASA enemas, foams, or suppositories at any time within two weeks prior to the screening visit. .
• Use of TNF-alpha antibody or any other biologic therapy within 2 months prior to the screening visit. .
• Use of immunosuppressive drugs at any time within four weeks prior to the screening visit. .
• Use of oral or parenteral antibiotics at any time within two weeks prior to the screening visit.
• Diagnosis of Crohn's disease.
• Diagnosis of indeterminate colitis (inability to distinguish between ulcerative colitis and Crohn's disease).
• Diagnosis of microscopic colitis (collagenous or lymphocytic colitis).
• Diagnosis of ischemic, infectious (e.g., salmonella, shigella, etc.), or amebic colitis, or gonococcal proctitis.
• Diagnosis of Clostridium difficile colitis.
• History of positive serology to hepatitis B or C or human immunodeficiency virus (HIV) infection.
• Active alcohol or drug abuse.
• Known malignancy or history of malignancy that would reduce life expectancy.
• Current smoker, or has been a smoker within 6 months prior to the screening visit.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: 2 x 10 mg placebo capsule; 2 x 10 mg placebo capsules, administered orally with water, b.i.d.	Drug: placebo capsule; 2 x 10 mg placebo capsules administered orally with water, b.i.d.; Other Names: Group 1
Experimental: 10mg Natura-alpha + 10 mg placebo; 10 mg Natura-alpha capsule + 10 mg placebo capsule administered orally with water, b.i.d.	Drug: 10 mg Natura-alpha capsule and 10 mg placebo capsule; 10 mg Natura-alpha capsule and 10 mg placebo capsule administered orally with water, b.i.d.; Other Names: Group 2
Experimental: 2 x 10 mg Natura-alpha capsules; 2 x 10mg Natura-alpha capsules administered orally with water, b.i.d.	Drug: 2 x 10 mg Natura-alpha capsules; 2 x 10mg Natura-alpha capsules administered orally with water, b.i.d.; Other Names: Group 3

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Physician's Global Assessment(PGA)	The primary efficacy endpoint will be the proportion of patients in all treatment groups with clinical response (improvement) at Day 28.	Day 28 after the treatment

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Physician's Global Assessment (PGA)	The proportion of patients in all treatment groups who achieve clinical remission at Day 28	Day 28 after the treatment
Physician's Global Assessment (PGA)	The proportion of patients in all treatment groups who demonstrate clinical response	Day 7
Physician's Global Assessment (PGA)	The proportion of patients in all treatment groups who demonstrate clinical response	14
Physician's Global Assessment (PGA)	The proportion of patients in all treatment groups who demonstrate clinical response who were previously corticosteroid, 5-aminosalicylic acid (5-ASA), immunosuppresant, TNF-alpha antibody therapy-refractory or intolerant	Day 28
Safety	adverse events, changes in physical examination findings, vital signs, concomitant medications, and laboratory test results	Day 28

Collaborators and Investigators

• Sponsor: Natrogen Therapeutics International, Inc
• Investigators: Study Director: Longgui Wang, MD, Natrogen Therapeutics International, Inc

Study record dates

Study Major Dates

• Study Start: July 1, 2010
• Primary Completion (Anticipated): July 1, 2011
• Study Completion (Anticipated): September 1, 2011

Study Registration Dates

• First Submitted: September 2, 2010
• First Submitted That Met QC Criteria: October 6, 2010
• First Posted (Estimate): October 7, 2010

Study Record Updates

• Last Update Posted (Estimate): June 27, 2011
• Last Update Submitted That Met QC Criteria: June 24, 2011
• Last Verified: July 1, 2010

More Information

Terms related to this study

• Keywords: ulcerative colitis; cytokines; Th1; Th17; Natura-alpha
• Additional Relevant MeSH Terms: Digestive System Diseases; Pathologic Processes; Gastrointestinal Diseases; Gastroenteritis; Colonic Diseases; Intestinal Diseases; Inflammatory Bowel Diseases; Ulcer; Colitis; Colitis, Ulcerative
• Other Study ID Numbers: NTI-2009-UC1; 70984 (Other Identifier: Food and Drug Administration)