Safety and Efficacy of AST-120 in Mild to Moderate Crohn's Patients With Fistulas

NCT ID: NCT00321412

Last Updated: 2014-05-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

191 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-03-31

Study Completion Date

2008-09-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The objective of this study is to evaluate the safety and effectiveness of the experimental drug AST-120 in treating patients with mild to moderately severe Crohn's disease who have fistulas. The study will test whether or not patients receiving AST-120 experience a greater reduction in number of draining fistulas and improvement of their other Crohn's disease symptoms versus patients who receive placebo (material that does not contain any active medication).

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

The experimental drug AST-120 is composed of black, odorless spherical carbon particles in 2g sachets (aluminum foil pouches). The placebo consists of microcrystalline cellulose spheres, Celphere CP-305, stained to match the appearance of AST-120, in 2g sachets (aluminum foil pouches). Both AST-120 and placebo are oral (taken by mouth)preparations. Both are tasteless. To take the product, patients will tear open the sachets, drop the contents directly on their tongue and wash it down with 8 ounces of water.

Patients will be randomly assigned (like the toss of a coin), to receive either AST-120 or placebo. Patients will have a 50/50 chance of receiving placebo. Patients who participate in this study will be required to take a single dose of study drug (AST-120 or placebo) 3 times a day, 30 minutes after a meal, for 8 weeks, and be evaluated at Week 4 and Week 8. This is a 'blinded' treatment, which means that neither the patient nor the study doctor will know if the patient has received study drug or placebo.

If, at the end of the first full course of randomized treatment, (8 weeks), patients are not showing an improvement in their condition, they may have the option to receive the alternate blinded treatment for one treatment course (8 weeks). The study doctor will discuss this option with each patient individually. During this second course of treatment, patients will be evaluated at Week 12 and Week 16. If the patient does not respond to the alternate blinded treatment, or their condition worsens after 4 weeks (assessed at Week 12), they may be removed from the study at the discretion of the investigator.

If patients respond to either the initial treatment or the alternate blinded treatment, they will have monthly doctor/clinic visits for up to 6 months (Week 24), or until their condition worsens or they relapse. Patients will not receive any study drug during this follow-up period.

Relapse is defined for this study as:

* an increase by 1 or more in the number of draining fistulas for 2 sequential visits versus the number present at the time of response (response is defined as at least a 50% reduction in the number of draining fistulas at either Week 8, or for those patients receiving alternate blinded treatment, Week 16).

There are a maximum of 8 patient evaluation visits in this study (Screen, Baseline, Week 4, Week 8, Week 12, Week 16, Week 20 and Week 24). Evaluations at most of these visits include a review of concomitant medications, medical history/adverse events, physical exam, fistula exam, blood draws for safety labs, urine pregnancy tests for females, and measurement of body weight. Patients will also be asked to keep a daily diary to record frequency of bowel movements, general well-being, and use of antidiarrheal medication.

Treatment failure in this study is defined by one or more of the following occurring prior to Week 8:

* The need for additional therapies or dose increase for treatment of Crohn's disease, including an increase of corticosteroid dose to higher than baseline
* Clinical/symptomatic development of an abscess
* Clinical/symptomatic evidence of stricture
* The need for surgical intervention for Crohn's disease
* The patient withdraws from the study

Patients will be discontinued from the study at any time if one or more of the following complications occur:

* Development of an abscess or symptomatic stricture
* The need for surgical intervention for Crohn's disease
* Occurrence of any other event that in the opinion of the investigator warrants discontinuation of the patient from the study

In addition, patients whose CDAI score has risen by \> or = 70 points above baseline or risen above 400 will be discontinued from the study.

Administration of any additional therapies or dose increases of concomitant medications (including corticosteroids) to control Crohn's disease to higher than baseline while receiving study drug (initial randomized treatment or alternate blinded treatment) will require discontinuation of the patient from the study.

Discontinued patients will be evaluated in a termination visit to document the lack of treatment efficacy and no further study treatment will be given.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Inflammatory Bowel Disease Intestinal Fistula

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

2

Celphere® CP-305, stained to match appearance of AST-120, in 2g sachets

Group Type PLACEBO_COMPARATOR

AST-120

Intervention Type DRUG

oral, sachet, 2 grams three times daily for 8 weeks

1

AST-120, 2 gram sachets

Group Type EXPERIMENTAL

AST-120

Intervention Type DRUG

oral, sachet, 2 grams three times daily for 8 weeks

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

AST-120

oral, sachet, 2 grams three times daily for 8 weeks

Intervention Type DRUG

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Body Weight \> or = 40kg
* Documented diagnosis of Crohn's disease, including patients with documented diagnosis of ileitis, colitis, or ileocolitis
* Presence of at least one draining fistula. Patients with enterocutaneous fistulas can be included if they have \> or = 1 draining perianal fistula. Women with rectovaginal fistulas can be included if they have \> or = 1 draining perianal fistula.
* Crohn's Disease Activity Index (CDAI) score \< 400
* Platelet count (thrombocytes) \> or = 100,000/uL
* Able and willing to comply with all protocol procedures for the duration of the study
* Able and willing to understand, sign and date an informed consent document, and authorize access to protected health information
* Females must be postmenopausal, surgically incapable of bearing children, or practicing a reliable method of birth control (hormonal contraceptives, intrauterine devices, spermicide and barrier). Partner/spouse sterility may also qualify at the Investigator's discretion. Females of child-bearing potential must have a negative urine pregnancy test at baseline.

Exclusion Criteria

* Non-response to infliximab or other biological immunosuppressants/ immunomodulators for fistulas associated with Crohn's disease (response is defined as a \> or = 50% reduction from baseline in the number of fistulas over at least four weeks); patients who respond once to infliximab and eventually fail can be included
* Infliximab (and/or other biological immunosuppressant/immunomodulatory) therapy within 3 months prior to enrollment in the study
* Presence of symptomatic strictures or suggestion of significant clinical obstruction
* Patients with setons are excluded, unless the setons are removed within 48 hours prior to study entry
* Presence of entero-entero, recto-vesicular, entero-vesicular fistulas
* Platelet count (thrombocytes) \< 100,000/uL
* CDAI score of \> or = 400
* Patient is unable to stay on a stable dose of concomitant Crohn's disease medication(s) for at least 10 weeks in the opinion of the investigator
* Currently symptomatic untreated diarrhea due to conditions other than mild to moderately active Crohn's disease (e.g., bacterial or parasitic gastroenteritis, bile salt diarrhea, etc.)
* Severe diarrhea defined by \> 10 liquid bowel movements per day
* Other local manifestations of mild to moderately active Crohn's disease such as abscesses, or other disease manifestations for which surgery might be indicated or which might preclude utilization of a CDAI to assess response to therapy (e.g., short bowel syndrome)
* Presence of an ileostomy
* Receiving Total Parenteral Nutrition (TPN) as the sole source of nutrition within 3 weeks of Screen
* Poor tolerability of venipuncture or lack of adequate venous access for required blood sampling.
* Hemoglobin \< 8.5 g/dL (females) or hemoglobin \< 10 g/dL (males) at Screen
* Women who are pregnant, breast feeding, or planning to become pregnant during the study
* Other major physical or major psychiatric illness within the last 6 months that in the opinion of the investigator would affect the patient's ability to complete the trial
* Uncontrolled systemic disease
* Patients undergoing chemotherapy for the treatment of cancer
* Known hypersensitivity or contraindication to any component of the test product (study drugs) or diagnostics used
* Participation in another study within eight (8) weeks prior to the study
* Unable to attend all visits required by the protocol
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Ocera Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Laurent Fischer, MD

Role: STUDY_DIRECTOR

Ocera Therapeutics

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Advanced Clinical Research Institute

Anaheim, California, United States

Site Status

Digestive Care Medical Center

San Carlos, California, United States

Site Status

Shafran Gasteroenterology Center

Winter Park, Florida, United States

Site Status

Rush University Medical Center

Chicago, Illinois, United States

Site Status

University of Chicago Medical Center

Chicago, Illinois, United States

Site Status

Indiana University, Outpatient Clinical Research Facility

Indianapolis, Indiana, United States

Site Status

University of Kentucky Chandler Medical Center

Lexington, Kentucky, United States

Site Status

University of Louisville, Department of Surgery

Louisville, Kentucky, United States

Site Status

Metropolitan Gastroenterology Group/Chevy Chase Clinical Research

Chevy Chase, Maryland, United States

Site Status

Brigham & Women's Hospital

Boston, Massachusetts, United States

Site Status

Clinical Research Institute of Michigan, LLC

Chesterfield, Michigan, United States

Site Status

Drs. Scherf, Chessler, Zingler & Spinnell, MD, PA

Fort Lee, New Jersey, United States

Site Status

Long Island Clinical Research Associates, LLP

Great Neck, New York, United States

Site Status

Mount Sinai School of Medicine, IBD Research Center

New York, New York, United States

Site Status

University of Rochester Medical Center

Rochester, New York, United States

Site Status

University of North Carolina

Chapel Hill, North Carolina, United States

Site Status

Carolina Digestive Health Associates

Charlotte, North Carolina, United States

Site Status

University Hospitals of Cleveland

Cleveland, Ohio, United States

Site Status

Cleveland Clinic - Department of Gastroenterology

Cleveland, Ohio, United States

Site Status

The Penn State University, Milton S. Hershey Medical Center

Hershey, Pennsylvania, United States

Site Status

Allegheny General Hospital

Pittsburgh, Pennsylvania, United States

Site Status

Digestive Disease Center/MUSC

Charleston, South Carolina, United States

Site Status

Memphis Gastroenterology Group, PC

Germantown, Tennessee, United States

Site Status

University of Washington

Seattle, Washington, United States

Site Status

Dean Foundation Research Center

Madison, Wisconsin, United States

Site Status

Univ Klinik fur Innere Medizin Innsbruck

Innsbruck, , Austria

Site Status

Universitatsklinik fur Innere Medizin I der PMU

Salzburg, , Austria

Site Status

AKH Wien - Univ Klinik Innere Med IV

Vienna, , Austria

Site Status

Imelda General Hospital

Bonheiden, , Belgium

Site Status

St. Jansziekenhuis/Ziekenhuis Oost-Limburg

Genk, , Belgium

Site Status

University Hospital Gasthuisberg, University of Leuven

Leuven, , Belgium

Site Status

H.-Hartziekenhuis Roeselare-Menen vzw

Roeselare, , Belgium

Site Status

GILDR Group, University of Edmonton

Edmonton, Alberta, Canada

Site Status

Liver & Intestinal Research Centre

Vancouver, British Columbia, Canada

Site Status

McMaster University Medical Centre

Hamilton, Ontario, Canada

Site Status

London Health Sciences Center

London, Ontario, Canada

Site Status

Jewish General Hospital

Montreal, Quebec, Canada

Site Status

University Hospital Brno, Internal and Gastroenterology Department

Brno, , Czechia

Site Status

Regional Hospital Liberec, Department of Gastroenterology

Liberec, , Czechia

Site Status

University Hospital Prague 2, 4th Department of Internal Medicine

Prague, , Czechia

Site Status

Thomayer's University Hospital Prague, 2nd Internal Department

Prague, , Czechia

Site Status

Institute for Clinical and Experimental Medicine

Prague, , Czechia

Site Status

CHU Hopital Nord, Service de Gastro-enterologie et nutrition

Amiens, , France

Site Status

Hopital de la Cote de Nacre - CHU

Caen, , France

Site Status

CHU de Grenoble - Hopital Nord

Grenoble, , France

Site Status

Hopital Claude Huriez, Service des maladies de l'appareil disgestif

Lille, , France

Site Status

Hopital Nord, Service de Gastro-Enterologie

Marseille, , France

Site Status

Hopital Saint-Eloi, Service de Gastro-enterologie et transplantation

Montpelier, , France

Site Status

CHU Hotel Dieu, Institut des Maladies de l'Appareil Digestif

Nantes, , France

Site Status

CHU de Nice - Hopital de l'Archet 2

Nice, , France

Site Status

Hopital Leopold Bellan

Paris, , France

Site Status

Universitatsklinikum Aachen

Aachen, , Germany

Site Status

Charite-Campus Virchow-Klinikum

Berlin, , Germany

Site Status

Klinikum der Johann-Wolfgang-Goethe Universitat Frankfurt am Main

Frankfurt, , Germany

Site Status

Medizinische Hochschule Hannover

Hanover, , Germany

Site Status

Universitatsklinik Heidelberg Abteilung Gastroenterologie und Hepatologie

Heidelberg, , Germany

Site Status

Universitatsklinikum Schleswig-Holstein

Kiel, , Germany

Site Status

Klinikum rechts der Isar der TUM II

München, , Germany

Site Status

Universitatsklinikum Regensburg

Regensburg, , Germany

Site Status

Universitat Rostock - Midizinische Fakultat

Rostock, , Germany

Site Status

Medizinische Universitatsklinik Tubingen

Tübingen, , Germany

Site Status

Universitatsklinikum Ulm

Ulm, , Germany

Site Status

Peterfy Sandor utcai Korhaz-Rendelointezet

Budapest, , Hungary

Site Status

Semmelweis Egyetem

Budapest, , Hungary

Site Status

Semmelweis Egyetem

Budapest, , Hungary

Site Status

Miskolc Megyei Jogu Onkormanyzat Semmelweis Oktato Korhaz-Rendelointezet

Miskolc, , Hungary

Site Status

Szegedi Tudomanyegyetem, I.sz. Belgyogyaszati Klinika

Szeged, , Hungary

Site Status

Bnai Zion Medical Center

Haifa, , Israel

Site Status

Rambam Medical Center

Haifa, , Israel

Site Status

Strauss Medical Center

Jerusalem, , Israel

Site Status

Meir Hospital

Kfar Saba, , Israel

Site Status

Rabin Medical Center, Bellinson Hospital

Petah Tikva, , Israel

Site Status

Sheba Medical Center

Ramat Gan, , Israel

Site Status

Kaplan Medical Center

Rehovot, , Israel

Site Status

Erasmus MC, Department of Gastroenterology and Hepatology

Rotterdam, , Netherlands

Site Status

Samodzielny Publiczny Centralny Szpital Kliniczny Slaskiej AM

Katowice, , Poland

Site Status

Zakaznych Szpitala Uniwersyteckiego w Krakowie

Krakow, , Poland

Site Status

Korektalnej Uniwersytetu Medycznego w Lodzi

Lodz, , Poland

Site Status

University Hospital Olomouc, 2nd Internal Department

Olomouc, , Poland

Site Status

Samodzielny Publiczny Szpital Kliniczny Nr 2 im. Heliodora

Poznan, , Poland

Site Status

Samodzielny Publiczny Centralny Szpital

Warsaw, , Poland

Site Status

Katedra Klinika Gastroenterologi, Akedemil Medycanej we Wroclawiu

Wroclaw, , Poland

Site Status

Bristol Royal Infirmary, Dept. of Gastroenterology

Bristol, , United Kingdom

Site Status

Countess of Chester Hospital

Chester, , United Kingdom

Site Status

Crosshouse Hospital

Kilmarnock, , United Kingdom

Site Status

Leicester General Hospital - GI Research Unit

Leicester, , United Kingdom

Site Status

University College London Hospital, Dept. of Gastroenterology

London, , United Kingdom

Site Status

John Radcliffe Hospital, Dept. of Gastroenterology

Oxford, , United Kingdom

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States Austria Belgium Canada Czechia France Germany Hungary Israel Netherlands Poland United Kingdom

References

Explore related publications, articles, or registry entries linked to this study.

Hay JW, Hay AR. Inflammatory bowel disease: costs-of-illness. J Clin Gastroenterol. 1992 Jun;14(4):309-17. doi: 10.1097/00004836-199206000-00009.

Reference Type BACKGROUND
PMID: 1607607 (View on PubMed)

Hugot JP, Chamaillard M, Zouali H, Lesage S, Cezard JP, Belaiche J, Almer S, Tysk C, O'Morain CA, Gassull M, Binder V, Finkel Y, Cortot A, Modigliani R, Laurent-Puig P, Gower-Rousseau C, Macry J, Colombel JF, Sahbatou M, Thomas G. Association of NOD2 leucine-rich repeat variants with susceptibility to Crohn's disease. Nature. 2001 May 31;411(6837):599-603. doi: 10.1038/35079107.

Reference Type BACKGROUND
PMID: 11385576 (View on PubMed)

Ogura Y, Bonen DK, Inohara N, Nicolae DL, Chen FF, Ramos R, Britton H, Moran T, Karaliuskas R, Duerr RH, Achkar JP, Brant SR, Bayless TM, Kirschner BS, Hanauer SB, Nunez G, Cho JH. A frameshift mutation in NOD2 associated with susceptibility to Crohn's disease. Nature. 2001 May 31;411(6837):603-6. doi: 10.1038/35079114.

Reference Type BACKGROUND
PMID: 11385577 (View on PubMed)

Best WR, Becktel JM, Singleton JW. Rederived values of the eight coefficients of the Crohn's Disease Activity Index (CDAI). Gastroenterology. 1979 Oct;77(4 Pt 2):843-6.

Reference Type BACKGROUND
PMID: 467941 (View on PubMed)

Schwartz DA, Loftus EV Jr, Tremaine WJ, Panaccione R, Harmsen WS, Zinsmeister AR, Sandborn WJ. The natural history of fistulizing Crohn's disease in Olmsted County, Minnesota. Gastroenterology. 2002 Apr;122(4):875-80. doi: 10.1053/gast.2002.32362.

Reference Type BACKGROUND
PMID: 11910338 (View on PubMed)

Hellers G, Bergstrand O, Ewerth S, Holmstrom B. Occurrence and outcome after primary treatment of anal fistulae in Crohn's disease. Gut. 1980 Jun;21(6):525-7. doi: 10.1136/gut.21.6.525.

Reference Type BACKGROUND
PMID: 7429313 (View on PubMed)

Farmer RG, Hawk WA, Turnbull RB Jr. Clinical patterns in Crohn's disease: a statistical study of 615 cases. Gastroenterology. 1975 Apr;68(4 Pt 1):627-35. No abstract available.

Reference Type BACKGROUND
PMID: 1123132 (View on PubMed)

Gray BK, Lockhartmummery HE, Morson BC. Crohn's disease of the anal region. Gut. 1965 Dec;6(6):515-24. doi: 10.1136/gut.6.6.515. No abstract available.

Reference Type BACKGROUND
PMID: 5857889 (View on PubMed)

Schwartz DA, Pemberton JH, Sandborn WJ. Diagnosis and treatment of perianal fistulas in Crohn disease. Ann Intern Med. 2001 Nov 20;135(10):906-18. doi: 10.7326/0003-4819-135-10-200111200-00011.

Reference Type BACKGROUND
PMID: 11712881 (View on PubMed)

Schwartz DA, Herdman CR. Review article: The medical treatment of Crohn's perianal fistulas. Aliment Pharmacol Ther. 2004 May 1;19(9):953-67. doi: 10.1111/j.1365-2036.2004.01917.x.

Reference Type BACKGROUND
PMID: 15113362 (View on PubMed)

Present DH, Rutgeerts P, Targan S, Hanauer SB, Mayer L, van Hogezand RA, Podolsky DK, Sands BE, Braakman T, DeWoody KL, Schaible TF, van Deventer SJ. Infliximab for the treatment of fistulas in patients with Crohn's disease. N Engl J Med. 1999 May 6;340(18):1398-405. doi: 10.1056/NEJM199905063401804.

Reference Type BACKGROUND
PMID: 10228190 (View on PubMed)

Present DH, Korelitz BI, Wisch N, Glass JL, Sachar DB, Pasternack BS. Treatment of Crohn's disease with 6-mercaptopurine. A long-term, randomized, double-blind study. N Engl J Med. 1980 May 1;302(18):981-7. doi: 10.1056/NEJM198005013021801.

Reference Type BACKGROUND
PMID: 6102739 (View on PubMed)

Hanauer SB, Feagan BG, Lichtenstein GR, Mayer LF, Schreiber S, Colombel JF, Rachmilewitz D, Wolf DC, Olson A, Bao W, Rutgeerts P; ACCENT I Study Group. Maintenance infliximab for Crohn's disease: the ACCENT I randomised trial. Lancet. 2002 May 4;359(9317):1541-9. doi: 10.1016/S0140-6736(02)08512-4.

Reference Type BACKGROUND
PMID: 12047962 (View on PubMed)

Sands BE, Anderson FH, Bernstein CN, Chey WY, Feagan BG, Fedorak RN, Kamm MA, Korzenik JR, Lashner BA, Onken JE, Rachmilewitz D, Rutgeerts P, Wild G, Wolf DC, Marsters PA, Travers SB, Blank MA, van Deventer SJ. Infliximab maintenance therapy for fistulizing Crohn's disease. N Engl J Med. 2004 Feb 26;350(9):876-85. doi: 10.1056/NEJMoa030815.

Reference Type BACKGROUND
PMID: 14985485 (View on PubMed)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

AST001

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.