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Phase III Randomized Study of Interferon Gamma in Children With Severe, Congenital Osteopetrosis

This study has been completed.
Study NCT00004402.   Last updated on June 23, 2005.   Information provided by FDA Office of Orphan Products Development

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Descriptive Information Fields
Brief Title  Phase III Randomized Study of Interferon Gamma in Children With Severe, Congenital Osteopetrosis
Official Title 
Brief Summary

OBJECTIVES: I. Compare the rate of treatment failure in osteopetrosis patients receiving interferon gamma in combination with calcitriol to the rate of treatment failure in patients receiving calcitriol alone.

II. Compare the number of adverse events or clinical manifestations of disease progression occurring in these patients.

III. Assess the effects of interferon gamma on hematopoiesis, cranial nerve function, and rate of infection in these patients.

Detailed Description

PROTOCOL OUTLINE: This is a randomized, placebo controlled, open label study. Patients are randomized to one of two arms (interferon gamma in combination with calcitriol or calcitriol alone).

Arm I: Patients receive calcitriol once daily. Interferon gamma is administered by subcutaneous injection three times a week.

Arm II: Patients receive calcitriol once daily. Patients may continue treatment in the absence of toxicity and disease progression. If disease progression is diagnosed in the control group, patients will then receive interferon gamma in combination with calcitriol.

Patients are followed every 4 weeks.

Study Phase Phase III
Study Type  Interventional
Study Design  Treatment
Primary Outcome Measure 
Secondary Outcome Measure 
Condition  Osteopetrosis
Intervention  Drug: calcitriol
Drug: interferon gamma
MEDLINE PMIDs
Links
Recruitment Information Fields
Recruitment Status  Completed
Enrollment  30
Start Date  November 1999
Completion Date June 2000
Eligibility Criteria 

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics--

  • Biopsy and x-ray confirmed primary osteopetrosis
  • Presence of anemia and/or cranial nerve compression

--Prior/Concurrent Therapy--

  • Biologic therapy: No prior/concurrent bone marrow transplantation No prior interferon gamma No other investigational biologic agents
  • Chemotherapy: No prior/concurrent chemotherapeutic agents for bone marrow transplantation
  • Endocrine therapy: Prior/concurrent corticosteroid as supportive therapy allowed
  • Radiotherapy: Not specified
  • Surgery: At least 5 days since major surgery
  • Other: Prior/concurrent calcitriol as supportive therapy allowed Prior/concurrent transfusion as supportive therapy allowed Prior/concurrent dietary therapy allowed

--Patient Characteristics--

  • Age: 2 months to 10 years
  • Performance status: Not specified
  • Life expectancy: At least 6 months
  • Hematopoietic: Not specified
  • Hepatic: Bilirubin less than 2 mg/dL
  • Renal: Creatinine less than 1.5 mg/dL OR Creatinine clearance greater than 50 mL/min
  • Pulmonary: No uncorrected airway obstruction
  • Other: No active infection requiring intravenous antibiotics No known seizure disorder not related to hypocalcemia No uncorrected hydrocephalus No MRI evidence of cerebral atrophy Must maintain or gain body weight No sleep apnea No thrombocytopenia No massive splenomegaly
Gender Both
Ages up to 10 Years
Accepts Healthy Volunteers No
Contacts ††
Location Countries 
Administrative Information Fields
NCT ID  NCT00004402
Organization ID 199/13284
Secondary IDs †† MUSC-FDR000768
Study Sponsor  FDA Office of Orphan Products Development
Collaborators †† Medical University of South Carolina
Investigators 
Study Chair:     L. Lyndon Key, Jr.     Medical University of South Carolina    
Information Provided By FDA Office of Orphan Products Development
Verification Date January 2001
First Received Date  October 18, 1999
Last Updated Date June 23, 2005

 †    Required WHO trial registration data element.
††   WHO trial registration data element that is required only if it exists.




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