Rosiglitazone in Treating Patients With Newly Diagnosed ACTH-Secreting Pituitary Tumor (Cushing Disease)
RATIONALE: Rosiglitazone may help pituitary tumor cells become more like normal cells, and to grow and spread more slowly.
PURPOSE: This phase II trial is studying how well rosiglitazone works in treating patients with newly diagnosed ACTH-secreting pituitary tumor (Cushing disease).
Drug: rosiglitazone maleate
Other: laboratory biomarker analysis
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||An Open Label, Multicenter Study Evaluating the Safety and Efficacy of Short Term (6 Weeks) Rosiglitazone Treatment in Patient's With Cushing's Disease|
- Percentage of responders [ Designated as safety issue: No ]
- Percentage of reduction in 24-hour urinary-free cortisol levels [ Designated as safety issue: No ]
|Study Start Date:||April 2007|
|Primary Completion Date:||December 2010 (Final data collection date for primary outcome measure)|
- To assess the effect of rosiglitazone on biochemical control in patients with newly diagnosed ACTH-secreting pituitary tumor (Cushing disease).
- To assess the effect of this drug on a core biochemical parameter (24-hour urinary-free cortisol) associated with disease progression.
- To assess the effect of this drug on corticotrophin (CRH)-stimulated pituitary tumor ACTH secretion.
- To assess the overall safety and tolerability of this drug in these patients.
- To assess the overall quality of life of patients treated with this drug.
OUTLINE: This is a multicenter study.
Patients receive oral rosiglitazone once daily for 7 weeks in the absence of disease progression or unacceptable toxicity.
Blood, urine, and saliva samples are collected periodically for laboratory studies. Inflammatory markers (C-reactive protein, interleukin-6 [IL-6], serum sialic acid, soluble intracellular and vascular adhesion molecules [sICAM-1, and sVCAM-1], and amyloid A) are measured at baseline and at the completion of study treatment; salivary cortisol and 24-hour urinary-free cortisol levels are measured at baseline and weekly during study treatment; dexamethasone suppression tests with serum cortisol and corticotrophin (CRH) stimulation test are performed at baseline and at the completion of study treatment; prolactin, insulin-like growth factor-1 (IGF1), thyroid function, and sex steroid hormones are measured at baseline and at the completion of study treatment; and dynamic pituitary function testing (arginine/growth hormone-releasing hormone [GHRH] testing to measure growth hormone secretion) is performed at baseline.
|United States, California|
|Jonsson Comprehensive Cancer Center at UCLA|
|Los Angeles, California, United States, 90095-1781|
|Principal Investigator:||Anthony Heaney, MD||Jonsson Comprehensive Cancer Center|