Metastatic Breast Cancer Clinical Trial
Official title:
Phase 1-2 Study of Safety and Efficacy of Intrathecal Trastuzumab Administration in Metastatic HER2 Positive Breast Cancer Patients Developing Carcinomatous Meningitis
The purpose of this study is:
Phase I: To determine the Trastuzumab maximum tolerated dose (MTD) when weekly administrated
by intrathecal or intraventricular route to reach a intra CSF target concentration (30 µg/mL)
near the conventional therapeutic concentration and depending on the dose-limiting toxicity
(DLT)
Phase II: Determination of antitumor activity trastuzumab when administrated by IT or
intra-ventricular in terms of neurological progression-free survival at 2 months
Phase I: Secondary Outcome Measures:
Recommended dose (RD will be used in Phase II) Toxicity during treatment Clinical response to
specific neurologic symptoms Time to neurologic progression Biological response: CSF
cellularity and protein concentration Radiological response: cerebrospinal meningitis and
neuraxis RMI Impact on quality of life Impact on survival (overall survival, survival without
neurological progression, progression-free survival) Pharmacokinetics: dose of trastuzumab in
CSF and plasma FCGR3A Genetic status influence on efficacy trastuzumab in metastatic breast
cancer
Phase II: Secondary Outcome Measures :
Toxicity during treatment Clinical response to specific neurologic symptoms Time to
neurologic progression Biological response: CSF cellularity and protein concentration
Radiological response: cerebrospinal meningitis and neuraxis MRI Impact on quality of life
Impact on survival (overall survival, survival without neurological progression,
progression-free survival) Pharmacokinetics: dose of trastuzumab in CSF and plasma
(confirmation of phase I data with 5 patients) FCGR3A Genetic status influence on efficacy
trastuzumab in metastatic breast cancer
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