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Phase II Pilot Study of Cyclophosphamide and Rabbit Anti-Thymocyte Globulin as Salvage Therapy in Patients With Diffuse Systemic Sclerosis

This study has been completed.
Information provided by:
Office of Rare Diseases (ORD) Identifier:
First received: May 6, 2001
Last updated: September 2, 2008
Last verified: September 2008

OBJECTIVES: I. Determine the toxicity of cyclophosphamide and rabbit anti-thymocyte globulin in patients with diffuse systemic sclerosis.

II. Determine the efficacy of this regimen in terms of controlling disease in these patients.

Condition Intervention Phase
Systemic Sclerosis
Drug: anti-thymocyte globulin
Drug: cyclophosphamide
Phase 2

Study Type: Interventional
Study Design: Primary Purpose: Treatment

Resource links provided by NLM:

Further study details as provided by Office of Rare Diseases (ORD):

Estimated Enrollment: 20
Study Start Date: June 2000
Detailed Description:

PROTOCOL OUTLINE: Patients receive cyclophosphamide IV over 1-2 hours on day 1 and rabbit anti-thymocyte globulin IV over 6-8 hours on days 2-5.

Patients are followed on days 60-85 and then every 3 months for 1 year.


Ages Eligible for Study:   up to 64 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


--Disease Characteristics--

Diagnosis of diffuse systemic sclerosis

Progressive disease Skin score at least 16 Interstitial or pulmonary vasculitis (FVC or DLCO no greater than 70% predicted) with evidence of alveolitis by bronchoalveolar lavage (BAL) Proteinuria (more than 500 mg/24 hours) Rapid deterioration in pulmonary function (at least 15% decrease in FVC or DLCO within the past 6 months) or new evidence of alveolitis by CT scan changes or BAL

No acute renal failure secondary to systemic sclerosis crisis

DLCO greater than 20% predicted

Ineligible for or refused autologous or allogeneic peripheral blood stem cell or bone marrow transplantation

--Prior/Concurrent Therapy--

Endocrine therapy: Concurrent prednisone allowed if prior chronic use

Other: At least 4 days since prior immunosuppressive therapy

--Patient Characteristics--

Performance status: Karnofsky 50-100%

Hematopoietic: Absolute neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3

Hepatic: Bilirubin less than 2.5 times upper limit of normal (ULN) SGOT less than 2.5 times ULN

Renal: See Disease Characteristics Creatinine clearance at least 35 mL/min No requirement for renal dialysis

Cardiovascular: Ejection fraction greater than 45% No myocardial infarction within the past 12 months No unstable angina No uncontrolled cardiac arrhythmias No evidence of congestive heart failure

Pulmonary: See Disease Characteristics


  • Not pregnant
  • Negative pregnancy test
  • Fertile patients must use effective contraception
  • HIV negative
  • No active uncontrolled infection
  • No hypersensitivity to rabbit proteins
  • No prior hemorrhagic cystitis requiring transfusion
  • No concurrent active hemorrhagic cystitis by cystoscopy (if prior history)
  • No concurrent malignancy
  Contacts and Locations
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Please refer to this study by its identifier: NCT00016458

United States, Colorado
University of Colorado Cancer Center
Denver, Colorado, United States, 80262
United States, North Carolina
Duke University Medical Center
Durham, North Carolina, United States, 27710
United States, Washington
Fred Hutchinson Cancer Research Center
Seattle, Washington, United States, 98109
Sponsors and Collaborators
Fred Hutchinson Cancer Research Center
Study Chair: Leona Holmberg Fred Hutchinson Cancer Research Center
  More Information Identifier: NCT00016458     History of Changes
Other Study ID Numbers: 199/15818
Study First Received: May 6, 2001
Last Updated: September 2, 2008

Keywords provided by Office of Rare Diseases (ORD):
arthritis & connective tissue diseases
rare disease
systemic sclerosis

Additional relevant MeSH terms:
Scleroderma, Systemic
Scleroderma, Diffuse
Pathologic Processes
Connective Tissue Diseases
Skin Diseases
Antilymphocyte Serum
Immunosuppressive Agents
Immunologic Factors
Physiological Effects of Drugs
Antirheumatic Agents
Antineoplastic Agents, Alkylating
Alkylating Agents
Molecular Mechanisms of Pharmacological Action
Antineoplastic Agents
Myeloablative Agonists processed this record on April 28, 2017