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Clinical Trial Summary

This phase II trial is studying how well R-(-)-gossypol acetic acid works in treating patients with recurrent extensive-stage small cell lung cancer. Drugs used in chemotherapy, such as R-(-)-gossypol acetic acid, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing.


Clinical Trial Description

PRIMARY OBJECTIVES:

I. To determine the objective response rate of R-(-)-gossypol in patients with recurrent chemotherapy-sensitive extensive stage small cell lung cancer.

II. To determine the time to disease progression. III. To determine the overall survival. IV. To assess the toxicities associated with this drug. V. To explore whether intratumoral Bcl-2 family member expression correlates with sensitivity to targeting by R-(-)-gossypol.

VI. To explore whether the administration of R-(-)-gossypol causes specific induction of the intrinsic apoptotic pathway.

OUTLINE: This is a multicenter study.

Patients receive oral R-(-)-gossypol once daily on days 1-21. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

Blood is collected periodically during treatment for pharmacodynamic analysis. Peripheral blood mononuclear cells are analyzed via protein isolation and western blotting for Bcl-2, cytoplasmic release of cytochrome c, and caspase activation. Available tumor tissue blocks are assessed by immunohistochemistry.

After completion of study therapy, patients are followed periodically for up to 5 years. ;


Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00773955
Study type Interventional
Source National Cancer Institute (NCI)
Contact
Status Completed
Phase Phase 2
Start date November 2008
Completion date August 2010

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