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Initial Treatment of Patients With Immune Thrombocytopenic Purpura (ITP^2)

2. Januar 2014 aktualisiert von: HealthCore-NERI

Initial Treatment of Patients With Immune Thrombocytopenic Purpura: The ITP^2 Study

This study will compare treatment with 3 courses of high-dose dexamethasone versus treatment with prednisone, for patients recently diagnosed with immune thrombocytopenic purpura (ITP). The primary hypothesis is that patients treated with high-dose dexamethasone will obtain a more durable remission than patients treated with prednisone.

Studienübersicht

Detaillierte Beschreibung

ITP is a common disorder associated with significant morbidity. For more than 40 years it has been recognized that this disorder was responsive to corticosteroid therapy. As corticosteroids are easily obtainable and inexpensive, they have become the standard first-line therapy for adult patients with newly-diagnosed ITP. Generally, patients are treated with prednisone at a dose of approximately 1 mg/kg, or 60 mg/day, and once a response is obtained the daily dosage is gradually tapered. While approximately 70% of patients treated in this manner respond initially, most will relapse as the corticosteroid dose is lowered; ultimately only 15-20% of patients achieve a complete or partial remission of their ITP at an "acceptable" dose of prednisone. Recently, several studies have suggested that the use of high dose corticosteroids, specifically pulse dexamethasone, may be a more efficacious initial therapy for ITP, capable of causing a higher initial response rate and a significantly longer duration of remission despite a shorter course of initial therapy.

This study will compare treatment with 3 courses of high-dose dexamethasone versus treatment with prednisone, for patients recently diagnosed with immune thrombocytopenic purpura (ITP). The primary hypothesis is that patients treated with high-dose dexamethasone will obtain a more durable remission than patients treated with standard oral corticosteroids. This may reflect the ability of high dose corticosteroids to eradicate a sensitive pathogenic lymphoid clone that may be transiently susceptible to aggressive immunosuppressive therapy early in the course of disease.

Studientyp

Interventionell

Einschreibung (Tatsächlich)

8

Phase

  • Phase 3

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • Louisiana
      • New Orleans, Louisiana, Vereinigte Staaten, 70112
        • Tulane University
    • Maryland
      • Baltimore, Maryland, Vereinigte Staaten, 21201
        • University of Maryland
      • Baltimore, Maryland, Vereinigte Staaten, 21287
        • Johns Hopkins Hospital
    • Massachusetts
      • Boston, Massachusetts, Vereinigte Staaten, 02114
        • Massachusetts General Hospital
      • Boston, Massachusetts, Vereinigte Staaten, 02115
        • Children's Hospital Boston
      • Boston, Massachusetts, Vereinigte Staaten, 02115
        • Brigham & Women's Hospital
    • New York
      • New York, New York, Vereinigte Staaten, 10021
        • Weill Medical College, Cornell University
    • North Carolina
      • Chapel Hill, North Carolina, Vereinigte Staaten, 27514
        • University of North Carolina Hospitals
      • Durham, North Carolina, Vereinigte Staaten, 27710
        • Duke University
    • Ohio
      • Cleveland, Ohio, Vereinigte Staaten, 44106
        • Case Western Reserve University
      • Cleveland, Ohio, Vereinigte Staaten, 44195
        • Cleveland Clinic Foundation
    • Oklahoma
      • Oklahoma City, Oklahoma, Vereinigte Staaten, 73104
        • The University Of Oklahoma Health Sciences Center
    • Pennsylvania
      • Philadelphia, Pennsylvania, Vereinigte Staaten, 19104
        • Children's Hospital of Philadelphia
      • Philadelphia, Pennsylvania, Vereinigte Staaten, 19104
        • University of Pennsylvania
      • Pittsburgh, Pennsylvania, Vereinigte Staaten, 15213
        • University of Pittsburgh Presbyterian and Shadyside Hospital
    • Washington
      • Seattle, Washington, Vereinigte Staaten, 98195
        • University of Washington Medical Center
    • Wisconsin
      • La Crosse, Wisconsin, Vereinigte Staaten, 54601
        • Gundersen Clinic
      • Madison, Wisconsin, Vereinigte Staaten, 53792
        • University of Wisconsin

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

15 Jahre und älter (Kind, Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Must meet criteria for a diagnosis of ITP as specified by ASH guidelines
  • Must be within 30 days after diagnosis of ITP at the time of randomization (diagnosis of ITP starts with first platelet count ≤ 100,000/μl)
  • Platelet count ≤ 30,000/μl at the time ITP is diagnosed, and/or at some time between the diagnosis of ITP and study entry
  • Platelet count ≤ 150,000/μl at the time of randomization
  • Age ≥ 15 years
  • If bone marrow examination is available, it must be compatible with ITP
  • Subjects, or their legal guardians, must have the ability to provide informed consent

Exclusion Criteria:

  • Rituximab therapy or splenectomy for ITP or for any other cause within the previous 8 weeks.
  • Known HIV infection
  • Known HCV infection
  • Known systemic lupus erythematosus
  • Pregnancy or breastfeeding
  • Insulin-requiring diabetes mellitus
  • Previous exposure to prednisone for ITP at a dose ≥ 1.5 mg/kg prednisone/day for ≥ 1 week prior to study entry
  • Ongoing use of treatments that are known to inhibit platelet function, e.g. aspirin
  • Anything that in the opinion of the investigator is likely to interfere with participation in the study
  • Persons previously randomized in the ITP^2 study
  • Persons currently enrolled in other interventional clinical trials
  • Exposure to thrombopoietic agent prior to study entry
  • Previous exposure to dexamethasone for the treatment of ITP at a dose of 30 mg/day or greater for subjects < 60 kg or 40 mg/day or greater for subjects >= 60 kg for at least four days

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Vervierfachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: High dose pulse dexamethasone
The dose for dexamethasone is 30 mg/day for patients < 60 kg and 40 mg/day for patients > 60 kg. The patient will be dosed on days 1-4, 15-18 and 29-32. On the remaining days during the treatment phase of the study, the patient will receive placebo capsules.
Aktiver Komparator: Standard prednisone therapy
Prednisone will be administered to study patients at a dose of 60 mg/day for patients less than 60 kg and 80 mg/day for patients > 60 kg for 21 days. The following schedule for tapering of prednisone will be used: after three weeks of treatment at either 60 mg/day (for patients < 60 kg) or 80 mg/day (for patients ≥ 60 kg), the dose will be reduced to 40 mg/day for 1 week, then 20 mg/day for 1 week, then 10 mg/day for 1 week, then 5 mg/day for 1 week and then stopped. Placebo capsules will be added as necessary during the treatment phase of the study, to maintain blinding.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
The Percentage of Patients in Each Treatment Arm Who Remain Free of All ITP Therapy With a Platelet Count ≥ 50,000/μl From 60 Days Through 365 Days After Study Entry.
Zeitfenster: From 60 days through 365 days after study entry.
From 60 days through 365 days after study entry.

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
The Percentage of Patients Who Remain Free of All ITP Therapy With a Platelet Count ≥ 150,000/μl From 60 Days Through 365 Days After Study Entry
Zeitfenster: From 60 days through 365 days after study entry
From 60 days through 365 days after study entry
The Percentage of Patients With Platelets ≥ 50,000/μl at 365 Days Who Are Off All Treatment, Have Received ≤ 2 Acute Therapeutic Interventions for Thrombocytopenia, and Whose Last Acute Therapeutic Intervention Occurred at Least 90 Days Before Day 365
Zeitfenster: 365 days after study entry
365 days after study entry
The Percentage of Patients Who Remain Free of All ITP Therapy With a Platelet Count of ≥ 150,000 From 180 Through 365 Days After Study Entry
Zeitfenster: From 180 days through 365 days after study entry
From 180 days through 365 days after study entry
The Percentage of Patients Who Remain Free of All ITP Therapy With a Platelet Count of ≥ 50,000 From 180 Through 365 Days After Study Entry
Zeitfenster: From 180 days through 365 days after study entry
From 180 days through 365 days after study entry
The Percentage of Patients Receiving Acute Therapeutic Intervention During the First 60 Days After Study Entry
Zeitfenster: Through 60 days after study entry
Through 60 days after study entry
The Percentage of Patients Receiving Acute Therapeutic Intervention Beyond the First 60 Days After Study Entry
Zeitfenster: From 60 days through 365 days after study entry
From 60 days through 365 days after study entry
The Percentage of Platelet Counts ≥ 50,000/μl After Day 60 (If a Subject Receives an Acute Therapeutic Intervention, the Next Protocol-specified Platelet Count Will be Excluded From This Analysis, as it May be Influenced by the Intervention.)
Zeitfenster: From 60 days through 365 days after study entry
From 60 days through 365 days after study entry
The Percentage of Platelet Counts ≥ 150,000/μl After Day 60 (If a Subject Receives an Acute Therapeutic Intervention, the Next Protocol-specified Platelet Count Will be Excluded From This Analysis, as it May be Influenced by the Intervention.)
Zeitfenster: From 60 days through 365 days after study entry
From 60 days through 365 days after study entry
The Percentage of Patients Undergoing Splenectomy
Zeitfenster: Through 365 days after study entry
Through 365 days after study entry
Change in the Quality of Life From Randomization to Weeks 4, 8 and End of Study, Determined Using the SF-36 Health Survey
Zeitfenster: Weeks 4, 8, and 52 after study entry
Weeks 4, 8, and 52 after study entry
The Incidence and Severity of Bleeding as Defined by a Customized Bleeding Score
Zeitfenster: Through 365 days after study entry
Through 365 days after study entry
The Percentage of Patients Not Completing Study Therapy
Zeitfenster: 49 days after study entry
49 days after study entry
The Percentage of Patients With Severe Adverse Events Attributable to Steroid Therapy
Zeitfenster: Through 1 year after study entry
Through 1 year after study entry

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Hauptermittler: James Bussel, MD, Weill Medical College, Cornell University
  • Hauptermittler: Alvin Schmaier, MD, Case Western Reserve University
  • Hauptermittler: Jodi Segal, MD, Johns Hopkins University
  • Hauptermittler: Eliot Williams, MD, University of Wisconsin, Madison
  • Hauptermittler: Thomas Ortel, MD, Duke University
  • Hauptermittler: James George, MD, The University of Oklahoma
  • Hauptermittler: Michele Lambert, MD, Children's Hospital of Philadelphia
  • Hauptermittler: Bruce Sachais, MD, PHD, University of Pennsylvania

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn

1. Januar 2010

Primärer Abschluss (Tatsächlich)

1. März 2013

Studienabschluss (Tatsächlich)

1. März 2013

Studienanmeldedaten

Zuerst eingereicht

7. Oktober 2009

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

7. Oktober 2009

Zuerst gepostet (Schätzen)

8. Oktober 2009

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Schätzen)

14. Februar 2014

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

2. Januar 2014

Zuletzt verifiziert

1. Januar 2014

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Produkt, das in den USA hergestellt und aus den USA exportiert wird

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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