Phase I Open-Label Study of the Safety, Toleration and Pharmacokinetics of CP-609,754, a Farnesyl Transferase Inhibitor, in Subjects With Advanced Malignant Tumors

OBJECTIVES: I. Determine the safety, tolerability, pharmacokinetics, and maximum tolerated dose of CP-609,754 in patients with advanced solid tumors. II. Determine the predictability, duration, intensity, onset, reversibility, and dose relationship of any observed toxicities in these patients when treated with this regimen. III. Determine any preliminary evidence of antitumor activity of this treatment as assessed by response rate and time to disease progression in this patient population.

OUTLINE: This is a dose escalation study. Patients receive oral CP-609,754 1-2 times daily. Treatment continues every 28 days for 12 courses in the absence of disease progression or unacceptable toxicity. Cohorts of 3-6 patients receive escalating doses of CP-609,754 until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 6 patients experience dose limiting toxicities. Patients are followed at 4 weeks.

PROJECTED ACCRUAL: Approximately 44-56 patients will be accrued for this study within 12 months.