Phase 1-2 Study of Everolimus and Low-dose Cyclophosphamide in Patients With Metastatic Renal Cell Cancer.
This is a phase I/II, national multi-center study of different doses and schedules of
low-dose oral cyclophosphamide in combination with fixed dose everolimus in patients with
mRCC not amenable to or progressive after a VEGF-receptor tyrosine kinase inhibitor
containing treatment regimen. Phase I part: Patients will be enrolled in cohorts of 5 per
dose level. The first 5 patients enrolled will be assigned to dose level 0 in order to
assess immune and angiogenic effects caused by everolimus monotherapy. The second 5 patients
enrolled will be assigned to dose level 1. If there are ≤1 dose-limiting toxicities (DLTs)
experienced by the first 5 patients in a cohort during the first 28 days after the first
study treatment, further patients will be entered in the next dose level. Entry of patients
into the expansion cohort will not occur until at least 28 days after the last patient in
the escalation phase received his/her first study treatment. At the final dose level
recommended for the phase II study a minimum of 10 patients will be treated. Phase II part:
In the phase 2 part of the study up to 56 patients will be treated at the dose level that
has been selected based on its capacity to most selectively deplete circulating Treg levels
in the phase 1 part of the study. Based on data of patients with mRCC treated with
everolimus monotherapy after previous treatment with sunitinib ± sorafenib, the
investigators aim to increase the number of patients who are alive and cancer progression
free at 4 months from 50% to 70% by adding metronomic cyclophosphamide. In addition, the
investigators consider this increase meaningful as long as the combination treatment does
not cause combination treatment related toxicity ≥ grade 3 in ≥ 30% of patients.
Interventional
Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Number of Participants with Adverse Events as a Measure of Safety and Tolerability
Outcome measure in Phase 1 and 2 part
from 28 days up to 2 years
Yes
Hans J. van der Vliet, MD, PhD
Study Director
VU University Medical Center
Netherlands: The Central Committee on Research Involving Human Subjects (CCMO)
11/016
NCT01462214
October 2011
March 2013
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