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Sponsors and Collaborators: |
National Heart, Lung, and Blood Institute (NHLBI) Genentech |
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Information provided by: | National Heart, Lung, and Blood Institute (NHLBI) |
ClinicalTrials.gov Identifier: | NCT00799773 |
Thrombotic thrombocytopenic purpura (TTP) is a rare disorder that causes blood clots to form in blood vessels. The main treatment for TTP is plasma exchange, in which affected patients receive transfusions of plasma, the liquid part of blood, from healthy donors. This study will examine the effectiveness of an antibody, rituximab, in combination with plasma exchange, at improving the immune response in people with TTP and decreasing the recurrence of TTP.
Condition | Intervention | Phase |
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Thrombotic Thrombocytopenic Purpura |
Drug: Rituximab Procedure: Plasma exchange Drug: Corticosteroids |
Phase III |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Open Label, Parallel Assignment, Safety/Efficacy Study |
Official Title: | STAR - Study of TTP and Rituximab, A Randomized Clinical Trial |
Estimated Enrollment: | 238 |
Study Start Date: | February 2009 |
Estimated Study Completion Date: | January 2016 |
Estimated Primary Completion Date: | March 2013 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
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1: Experimental
Participants will receive rituximab in addition to plasma exchange and corticosteroids.
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Drug: Rituximab
Dose of 375 mg/m2, given intravenously, repeated at 1-week intervals for a total of four doses
Procedure: Plasma exchange
Target volume of 1.25 plasma volume replacement; fresh frozen plasma (FFP) is the required replacement fluid; provided daily until platelet counts are normal and signs of tissue damage have improved.
Drug: Corticosteroids
1 mg/kg of prednisone (or equivalent) each day until plasma exchange is stopped
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2: Active Comparator
Participants will receive plasma exchange and corticosteroids.
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Procedure: Plasma exchange
Target volume of 1.25 plasma volume replacement; fresh frozen plasma (FFP) is the required replacement fluid; provided daily until platelet counts are normal and signs of tissue damage have improved.
Drug: Corticosteroids
1 mg/kg of prednisone (or equivalent) each day until plasma exchange is stopped
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TTP is a disorder that causes blood clots to form in the small blood vessels throughout the body. If the clots in fact block the blood vessels, blood flow is restricted to various organs, including the brain, kidneys, and heart. This can lead to neurological problems, stroke, abnormal kidney function, and heart problems. Because a large number of platelets are used in the blood clotting process, people with TTP have a reduced number of platelets circulating in their blood. They also have fewer red blood cells circulating in their blood because the red blood cells break down prematurely as blood squeezes past a blood clot.
The primary treatment for TTP is plasmapheresis, also called plasma exchange, which is a procedure that circulates a person's blood through a machine that first removes the damaged plasma and then adds healthy donor plasma into the blood. Next, patients receive a blood transfusion with the new blood. Corticosteroids, a type of medication that reduces the amount of antibodies a person's body makes, are also commonly used in conjunction with plasma exchange to treat TTP. Plasma exchange is usually effective, with platelet and red blood cell counts returning to normal after the procedure is complete. However, some people do experience a relapse of TTP and will require repeat plasma exchanges. Rituximab, an antibody currently used to treat lymphoma and rheumatoid arthritis, may improve immune system response and decrease the number of days needed to undergo the plasma exchange procedure. The purpose of this study is to evaluate the effectiveness of rituximab in combination with plasma exchange at improving an early treatment response in people with TTP and decreasing the likelihood of a relapse of TTP.
This 3-year study will enroll people who have recently been diagnosed with TTP or recently experienced a relapse and have not yet had six plasma exchanges during the current episode of TTP. Participants will be randomly assigned to receive either plasma exchanges and corticosteroids or plasma exchanges, corticosteroids, and rituximab. Blood will be collected from participants at baseline and each day they undergo the plasma exchange procedure. All participants will receive a plasma exchange every day until their platelet counts are normal and signs of tissue damage have improved. Participants will receive corticosteroid medication every day until plasma exchange is stopped, at which time the dosage will be gradually tapered until 7 weeks after the last plasma exchange. Participants receiving rituximab will receive the first dose intravenously within 7 days of the first plasma exchange; they will continue to receive rituximab once a week for 4 weeks. After the plasma exchanges are completed, all participants will have routine follow-up care with their doctors to make sure there is no TTP relapse. In the 1 year after study entry, additional blood collections will occur at varying times. Study researchers will monitor participants' health in the 3 years after study entry by following up with their doctors or through periodic phone calls. A portion of blood will be collected and stored for future TTP research purposes; this is optional.
Ages Eligible for Study: | 12 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Differential or admission diagnosis of TTP-like syndrome, defined as the following:
Exclusion Criteria:
Diagnosis of disseminated intravascular coagulation (DIC), defined as the following:
Established diagnosis of lupus, and/or actively treated for lupus in the 60 days before study entry. In addition, people with two or more of the following systemic lupus erythematosus (SLE) clinical criteria in the 60 days before study entry will be excluded:
Contact: Susan F. Assmann, PhD | 617-923-7747 ext 548 | sassmann@neriscience.com |
Contact: Julie E. Miller, MPH | 617-923-7747 ext 497 | jmiller@neriscience.com |
United States, Georgia | |
Emory University | |
Atlanta, Georgia, United States, 30322 | |
United States, Iowa | |
University of Iowa | |
Iowa City, Iowa, United States, 52242 | |
United States, Louisiana | |
Tulane University Health Sciences Center | |
New Orleans, Louisiana, United States, 70112 | |
United States, Maryland | |
University of Maryland Medical Center | |
Baltimore, Maryland, United States, 21201 | |
Johns Hopkins Hospital | |
Baltimore, Maryland, United States, 21205 | |
United States, Massachusetts | |
Children's Hospital Boston | |
Boston, Massachusetts, United States, 02115 | |
Beth Israel Deaconess Medical Center | |
Boston, Massachusetts, United States, 02115 | |
Brigham and Women's Hospital | |
Boston, Massachusetts, United States, 02115 | |
Massachusetts General Hospital | |
Boston, Massachusetts, United States, 02114 | |
United States, New York | |
New York-Presbyterian Hospital/Weill Cornell Medical Center | |
New York, New York, United States, 10021 | |
United States, North Carolina | |
Duke University Medical Center | |
Durham, North Carolina, United States, 27710 | |
University of North Carolina Hospitals | |
Chapel Hill, North Carolina, United States, 27514 | |
United States, Ohio | |
University Hospital Cleveland | |
Cleveland, Ohio, United States, 44106 | |
United States, Oklahoma | |
University of Oklahoma Health Sciences Center | |
Oklahoma City, Oklahoma, United States, 73104 | |
United States, Pennsylvania | |
University of Pennsylvania | |
Philadelphia, Pennsylvania, United States, 19104 | |
University of Pittsburgh Presbyterian and Shadyside Hospital | |
Pittsburgh, Pennsylvania, United States, 15213 | |
Children's Hospital of Pittsburgh | |
Pittsburgh, Pennsylvania, United States, 15213 | |
United States, Washington | |
University of Washington Medical Center/Fred Hutchinson Cancer Research Center (FHCRC) | |
Seattle, Washington, United States, 98195 | |
United States, Wisconsin | |
Froedtert Memorial Lutheran Hospital | |
Milwaukee, Wisconsin, United States, 53226 | |
University of Wisconsin at Madison | |
Madison, Wisconsin, United States, 53792 | |
Gunderson Clinic, LTD | |
LaCrosse, Wisconsin, United States, 54601 |
Principal Investigator: | Susan F. Assmann, PhD | New England Research Institutes, Inc. |
Principal Investigator: | Jan McFarland, MD | Froedtert Memorial Lutheran Hospital |
Principal Investigator: | Eliot Williams, MD, PhD | University of Wisconsin at Madison |
Principal Investigator: | Keith McCrae, MD | University Hospitals Case Medical Center |
Principal Investigator: | Ellis Neufeld, MD | Children's Hospital Boston |
Principal Investigator: | James Bussel, MD | Weill Medical Colllege, Cornell University |
Principal Investigator: | Thomas Ortel, MD | Duke University |
Principal Investigator: | Christopher Hillyer, MD | Emory University |
Principal Investigator: | Paul Ness, MD | Johns Hopkins University |
Principal Investigator: | David Kuter, MD | Massachusetts General Hospital |
Principal Investigator: | Sherrill Slichter, MD | University of Washington Medical Center/Fred Hutchinson Cancer Research Center (FHCRC) |
Principal Investigator: | Cindy Leissinger, MD | Tulane University School of Medicine |
Principal Investigator: | Ronald Strauss, MD | University of Iowa |
Principal Investigator: | John Hess, MD | University of Maryland |
Principal Investigator: | Mark Brecher, MD | The University of North Carolina, Chapel Hill |
Principal Investigator: | James George, MD | University of Oklahoma |
Principal Investigator: | Barbara Konkle, MD | University of Pennsylvania |
Principal Investigator: | Darrell Triulzi, MD | University of Pittsburgh Presbyterian and Shadyside/Children's Hospital Pittsburgh |
Study Chair: | Joseph Kiss, MD | University of Pittsburgh |
Responsible Party: | New England Research Institutes ( Susan Assmann ) |
Study ID Numbers: | 558, HL072268, HL072033, HL072291, HL072196, HL072248, HL072191, HL072305, HL072028, HL072072, HL072355, HL072283, HL072346, HL072331, HL072290 |
Study First Received: | November 26, 2008 |
Last Updated: | January 6, 2009 |
ClinicalTrials.gov Identifier: | NCT00799773 |
Health Authority: | United States: Food and Drug Administration |
TTP Rituximab Plasma Exchange |
Purpura Prednisone Rituximab Hematologic Diseases Thrombophilia Blood Coagulation Disorders Blood Platelet Disorders Vascular Diseases Hemostatic Disorders |
Purpura, Thrombotic Thrombocytopenic Purpura, Thrombocytopenic Thrombosis Thrombotic thrombocytopenic purpura, acquired Thrombocytopathy Signs and Symptoms Embolism and Thrombosis Thrombocytopenia Embolism |
Skin Manifestations Immunologic Factors Immune System Diseases Antineoplastic Agents Therapeutic Uses |
Physiological Effects of Drugs Cardiovascular Diseases Antirheumatic Agents Pharmacologic Actions |