A Phase II Study Of Cabazitaxel For Metastatic Gastroesophageal Adenocarcinomas That Have Relapsed After At Least One Line Of Chemotherapy
Gastric cancer is the second most frequent cancer-related cause of death after lung cancer
worldwide with approximately 900,000 cases per year. The incidence of gastric cancer is
highest in East Asia, China and Japan. In the last two decades there has been a dramatic
increase in North America and Europe of adenocarcinoma of the distal esophagus and GE
junction which are indistinguishable from proximal gastric cancer.
Cabazitaxel (XRP6258) is a semi-synthetic novel taxoid. Like traditional taxane drugs, it
binds to and stabilizes tubilin structures resulting in inhibition of cold-induced
microtubule depolymerization and cell division with subsequent inhibition of tumor cell
proliferation. This novel agent, however, has poor affinity for P-glycoprotein--the protein
product of multidrug resistance gene ABCB1. P-glycoprotein is a membrane-associated drug
efflux pump and is thought to be a potential cause of taxane resistance in tumors. Also
unlike traditional taxanes, Cabazitaxel has exhibited penetration through the blood-brain
barrier (BBB.) Preclinical studies have demonstrated that Cabazitaxel was cytotoxic for
cell lines with acquired resistance to doxorubicin, vincristine, vinblastine, paclitaxel or
docetaxel.
Taxanes have demonstrated statistically significant antitumor activity as both monotherapy
and as part of combination triplet regimens in gastroesophageal carcinoma.Cabazitaxel has
emerged as a novel investigational semi-synthetic taxoid that has established activity in
cell lines refractory to traditional taxanes in preclinical studies and now in a phase III
study in patients with metastatic prostate cancer. Cabazitaxel, with its low affinity for
the P-glycoprotein drug efflux pump, may demonstrate superior response rates to docetaxel.
Furthermore, as demonstrated in prostate cancer, cabazitaxel appears to have substantial
activity in patients who have previously been treated with docetaxel.
Phase I and II trials have been conducted demonstrating safety and efficacy of Cabazitaxel
(XRP6258) in metastatic breast and prostate cancer. Neutropenia was the primary
dose-limiting toxicity with the recommended dose established at 20 and 25mg/m2. The latter
dose was used in the TROPIC trial, the pivotal phase III trial demonstrating improved
overall survival and median progression free survival in patients with hormone resistant
prostate cancer refractory to docetaxel who had received Cabazitaxel plus prednisone versus
those who received mitaxantrone plus prednisone. Cabazitaxel given at IV doses of 25mg/m2
has demonstrated both safety and anti-tumor efficacy in phase I, II and now phase III trials
The primary goal is to evaluate the activity of Cabazitaxel for the treatment of advanced
gastroesophageal cancer that has progressed after at least one line of treatment for
metastatic disease. Activity will be defined as a complete or partial response. The
investigators will differentiate between a 10% level of activity and a 30% level of
activity.
Interventional
Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
To determine the response rate of Cabazitaxel in patients with metastatic gastroesophageal adenocarcinoma that have progressed after at least one line of therapy for metastatic disease
every three cycles approx every 63 days
Yes
Howard safran, MD
Principal Investigator
Brown University
United States: Institutional Review Board
BrUOG 243
NCT01365130
June 2011
March 2013
Name | Location |
---|---|
Brown University Oncology Group | Providence, Rhode Island 02912 |
Memorial Hospital | Pawtucket, Rhode Island 02860 |
Roger Williams | Providence, Rhode Island 02906 |