Tamoxifen, Carboplatin, and Topotecan in Treating Patients With CNS Metastases or Recurrent Brain or Spinal Cord Tumors

Unspecified Adult Solid Tumor, Protocol Specific Clinical Trial

Official title: A Pilot Study of Tamoxifen, Carboplatin and Topotecan in the Treatment of Recurrent or Refractory Primary Brain or Spinal Cord Tumors or Metastatic Epithelial Cancers With Central Nervous System Metastases

Status Completed

Clinical Trial Summary

RATIONALE: Drugs used in chemotherapy, such as carboplatin and topotecan, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Tamoxifen may help carboplatin work better by making tumor cells more sensitive to the drug.

PURPOSE: This phase II trial is studying the side effects of giving carboplatin and topotecan together with tamoxifen and to see how well it works in treating patients with central nervous system metastases or recurrent brain or spinal cord tumors.

Clinical Trial Description

OBJECTIVES:

• To evaluate the systemic and CNS response rates and progression-free and overall survival of patients with epithelial cancer and brain metastases treated with tamoxifen citrate, topotecan hydrochloride, and carboplatin.

• To evaluate the response rates, progression-free survival, and overall survival of patients with recurrent primary glial tumors treated with this regimen.

• To further assess the toxicity of these drugs in these patients.

• To further evaluate the pharmacokinetics of topotecan hydrochloride and tamoxifen citrate using paired specimens of cerebrospinal fluid and plasma from these patients.

OUTLINE: Patients are stratified by disease type (epithelial CNS metastases vs recurrent glial tumors).

Patients receive topotecan IV on days 1-3 (72 hours), carboplatin IV over 30 minutes on day 4, and oral tamoxifen twice daily on days 1-7. Treatment repeats every 28 days in the absence of disease progression or unacceptable toxicity. Patients achieving a complete response (CR) may be treated for 2 additional courses after documentation of CR.

Patients undergo blood sample collection at baseline and then periodically after the first dose of topotecan to obtain plasma pharmacokinetic (PK) measurements of topotecan and tamoxifen. Some patients may also undergo cerebrospinal fluid (CSF) collection to assess peak CSF levels of topotecan and tamoxifen during course 1. ;

Study Design

Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Brain and Central Nervous System Tumors
• Central Nervous System Neoplasms
• Metastatic Cancer
• Neoplasm Metastasis
• Neoplasms
• Nervous System Neoplasms
• Spinal Cord Neoplasms
• Unspecified Adult Solid Tumor, Protocol Specific

• NCT number: NCT00541138
• Study type: Interventional
• Source: City of Hope Medical Center
• Status: Completed
• Phase: Phase 2
• Start date: May 2003
• Completion date: October 2007