Clinical Trial: Idarubicin, Cytarabine, and Tipifarnib in Treating Patients With Newly Diagnosed Myelodysplastic Syndromes or Acute Myeloid Leukemia

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: PHASE I-II STUDY OF IDARUBICIN, CYTARABINE AND R115777 (TIPIFARNIB, ZARNESTRA; 702818; IND 58359), A FARNESYLTRANSFERASE INHIBITOR, IN PATIENTS WITH HIGH-RISK MYELODYSPLASTIC SYNDROMES AND ACUTE MYELO

Brief Summary: This phase I/II trial is studying the side effects and best dose of tipifarnib when given with idarubicin and cytarabine and to see how well it works in treating patients with newly diagnosed myelodysplastic syndromes or acute myeloid leukemia. Drugs used in chemotherapy, such as idarubicin and cytarabine, work in different ways to stop cancer cells from dividing so they stop growing or die. Tipifarnib (Zarnestra) may stop the growth of cancer cells by blocking the enzymes necessary for their growth. Giving idarubicin and cytarabine with tipifarnib may kill more cancer cells.

Detailed Summary:

PRIMARY OBJECTIVES:

I. To determine the tolerability of the combination of R115777 (Zarnestra™) and Idarubicin plus cytarabine by defining the DLT and MTD. (Phase I) II. To determine the efficacy of the combination of Idarubicin, cytarabine and ZARNESTRA in patients with high-risk MDS and AML. (Phase II)

OUTLINE: This is a dose-escalation study of tipifarnib. Patients are stratified according to age (< 50 versus ≥ 50) and, in patients ≥ 50 years of age, cytogenetics (diploid versus unfavorable).

INDUCTION THERAPY:

PHASE I: Patients receive cytarabine IV continuously on days 1-3 (or 1-4), idarubicin intravenous (IV) over 1 hour on days 1-3, and oral tipifarnib twice daily on days 1-21. Treatment repeats every 21 days for up to 2 courses in the absence of disease progression or unacceptable toxicity.

Cohorts of 6 patients receive escalating doses of tipifarnib until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 6 patients experience dose-limiting toxicity.

PHASE II: Patients receive cytarabine, idarubicin, and tipifarnib as in phase I at the MTD.

Patients in both phases who respond to induction therapy proceed to consolidation maintenance therapy.

CONSOLIDATION MAINTENANCE THERAPY: Patients receive consolidation therapy comprising cytarabine IV continuously on days 1-3, idarubicin IV over 1 hour on days 1-2, and tipifarnib twice daily on days 1-14. Treatment repeats every 4-6 weeks for 5 courses in the absence of unacceptable toxicity.

Sponsor: National Cancer Institute (NCI)

Current Primary Outcome: Number of Participants With Complete Response [ Time Frame: 21 Day Cycle ]

Complete Response (CR) is required bone marrow blasts ≤5% and recovery of normal hematopoiesis with an absolute neutrophil count (ANC) of 1*10^9/L or more and platelet count of 100*10^9/L or more; and a complete response without platelets (CRp) is the same criteria as CR but with platelet counts from 20*10^9/L to less than 100*10^9/L.


Original Primary Outcome:

Current Secondary Outcome:

Original Secondary Outcome:

Information By: National Cancer Institute (NCI)

Dates:
Date Received: November 9, 2004
Date Started: September 2004
Date Completion:
Last Updated: May 9, 2014
Last Verified: June 2013