Gleevec as Maintenance Therapy After Cytogenetic Response With Nilotinib in Newly Diagnosed Chronic Myelogenous Leukemia

Imatinib Mesylate (Glivec) as Maintenance Therapy After Cytogenetic Response With Nilotinib (AMN107, Tasigna) First Line in Newly Diagnosed Chronic Myelogenous Leukemia

The results of the International Randomized Study of Interferon and STI571 (IRIS) trial indicate that in patients with chronic phase CML treated with first line imatinib, achievement of a complete or partial cytogenetic response (CCyR or PCyR) at 12 months is associated with a significantly better progression-free survival (PFS).

Second generation tyrosine kinase inhibitors such as nilotinib can overcome imatinib resistance because of greater potency to bind to BCR-ABL. Recent results indicate that, in patients with previously untreated chronic phase CML, nilotinib results in a faster and higher rate of CCyR or PCyR than imatinib. However, nilotinib use is associated with diet restriction and much higher financial cost.

The primary objective of this study is to evaluate the ability of imatinib to maintain a complete cytogenetic response (CcyR) in patients who achieved a CCyR after 12 months of first-line treatment with nilotinib.

Study Overview

• Status: Recruiting
• Conditions: Chronic Myelogenous Leukemia
• Intervention / Treatment: Drug: Nilotinib

Detailed Description

Imatinib mesylate selectively targets the causative BCR-ABL oncogene in CML. The results of the IRIS trial indicate that in patients with chronic phase CML treated with first line imatinib, achievement of a complete or partial cytogenetic response (CCyR or PCyR) at 12 months is associated with a significantly better progression free survival (PFS).

Second generation tyrosine kinase inhibitors such as nilotinib can overcome imatinib resistance because of greater potency to bind to BCR-ABL. Recent results indicate that, in patients with previously untreated chronic phase CML, nilotinib results in a faster and higher rate of CCyR or PCyR than imatinib. However, nilotinib use is associated with diet restriction and much higher financial cost. Hence, an appealing strategy is to achieve the high rate of CCyR with first line nilotinib and then to maintain this response with long term imatinib which is user friendly and cost-effective.

The primary objective is to test the ability of imatinib to maintain the cytogenetic response in patients who achieved CCyR or PCyR at 12 months with first line nilotinib. The secondary aims are to assess the effects of this strategy on molecular response, BCR-ABL mutations, and CML progenitors.

• Study Type: Interventional
• Enrollment (Estimated): 25
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Ali Bazarbachi, MD, PhD; Phone Number: 9613612434; Email: bazarbac@aub.edu.lb

Study Locations

• Lebanon
  • Beirut, Lebanon
    • Recruiting
    • American University of Beirut Medical Center
    • Contact: Ali Bazarbachi, MD, PhD; Phone Number: 9613612434; Email: bazarbac@aub.edu.lb
    • Principal Investigator: Ali Bazarbachi, MD, PhD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Newly diagnosed untreated Philadelphia chromosome-positive CML (use of hydroxyurea for <3 months is allowed) in chronic phase defined with the following criteria:

   • <15% blasts in peripheral blood (PB) & bone marrow (BM)
   • <30% blasts plus promyelocytes in PB & BM
   • <20% basophils in PB
   • ≥100 x 109/L platelets
   • No evidence of extramedullary involvement, with the exception of liver & spleen
2. Patients (pts) ≥18 yrs of age
3. WHO Performance Status of ≤2

4. Pts must have the following laboratory values:

   • Potassium within normal limits or corrected to within normal limits with supplements prior to the first dose of study medication
   • Total calcium (corrected for serum albumin) and magnesium within normal limits or correctable with supplements
   • Phosphorus ≥ lower limit of normal (LLN) or correctable with supplements
   • ALT and AST ≤2.5 x upper limit of normal (ULN) or ≤5.0xULN if considered due to tumor
   • Alkaline phosphatase ≤2.5xULN
   • Serum bilirubin ≤1.5xULN
   • Serum Cr ≤1.5xULN or 24-hour Cr Cl ≥50 ml/min
   • Serum amylase ≤1.5xULN and serum lipase ≤1.5xULN
5. Written signed informed consent prior to any study procedures

Exclusion Criteria:

1. Cytopathologically confirmed central nervous system (CNS) infiltration

2. Impaired cardiac function, including any one of the following:

   • Left ventricle ejection fraction (LVEF) <45% or below the institutional lower limit of the normal range (whichever is higher) as determined by MUGA scan or echocardiogram
   • Complete left bundle branch block
   • Use of a pacemaker
   • ST depression of >1mm in 2 or more leads and/or T wave inversions in 2 or more contiguous leads
   • Congenital long QT syndrome
   • History of or presence of significant ventricular or atrial tachyarrhythmias
   • Clinically significant resting bradycardia (<50 beats/min)
   • QTc >450 msec on screening ECG
   • Right bundle branch block plus left anterior hemiblock, bifascicular block
   • Myocardial infarction within 12 months prior to starting nilotinib
   • Unstable angina diagnosed or treated during the past 12 months
   • Other clinically significant heart disease (e.g., congestive heart failure, uncontrolled hypertension, or history of labile hypertension)
3. Use of therapeutic coumarin derivatives (i.e., warfarin, acenocoumarol) up to day before study drug administration
4. Acute or chronic liver or renal disease considered unrelated to tumor such as active Hepatitis A, B, or C
5. Other concurrent severe and/or uncontrolled medical conditions
6. Pts who are currently receiving treatment with any of the medications that have the potential to prolong QT interval
7. Pts who have received any investigational drug ≤4 weeks or investigational cytotoxic agent within 1 week (or who are within 5 half-lives of a previous investigational cytotoxic agent) prior to starting study drug or who have not recovered from side effects of such therapy
8. Pts who have received wide field radiotherapy ≤4 weeks or limited field radiation for palliation <2 weeks prior to starting study drug or who have not recovered from side effects of such therapy
9. Pts who have undergone major surgery ≤2 weeks prior to starting study drug or who have not recovered from side effects of such therapy
10. Known diagnosis of HIV
11. Pt with a history of another malignancy that is currently clinically significant or currently requires active intervention
12. Pts who are pregnant or breast feeding, or adults of reproductive potential not employing an effective method of birth control (women of childbearing potential must have a negative serum pregnancy test within 48 hrs prior to drug administration). Post menopausal women must be amenorrheic for at least 12 months. Male & female pts must agree to employ an effective method of birth control throughout the study and for 3 months following discontinuation of study drug
13. Pts unwilling or unable to comply with protocol

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Nilotinib, cytogenetic response; Newly diagnosed CML patients	Drug: Nilotinib; Nilotinib 300 mg orally twice per day for 12 months followed by imatinib mesylate at a dose of 400 mg orally daily; Other Names: Tasigna, Gleevec

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
To test the ability of imatinib to maintain the cytogenetic response in patients who achieved complete cytogenetic response (CCyR) at 12 months with first line nilotinib.	January 2010-January 2015

Secondary Outcome Measures

Outcome Measure	Time Frame
To assess the effects of nilotinib followed by imatinib on molecular response	January 2010-January 2015
To assess the effects of nilotinib followed by imatinib on BCR-ABL mutations	January 2010-January 2015

Collaborators and Investigators

• Sponsor: American University of Beirut Medical Center
• Investigators: Principal Investigator: Ali Bazarbachi, MD, PhD, American University of Beirut Medical Center

Publications and helpful links

General Publications

• Druker BJ, Guilhot F, O'Brien SG, Gathmann I, Kantarjian H, Gattermann N, Deininger MW, Silver RT, Goldman JM, Stone RM, Cervantes F, Hochhaus A, Powell BL, Gabrilove JL, Rousselot P, Reiffers J, Cornelissen JJ, Hughes T, Agis H, Fischer T, Verhoef G, Shepherd J, Saglio G, Gratwohl A, Nielsen JL, Radich JP, Simonsson B, Taylor K, Baccarani M, So C, Letvak L, Larson RA; IRIS Investigators. Five-year follow-up of patients receiving imatinib for chronic myeloid leukemia. N Engl J Med. 2006 Dec 7;355(23):2408-17. doi: 10.1056/NEJMoa062867.
• Cortes JE, Jones D, O'Brien S, Jabbour E, Konopleva M, Ferrajoli A, Kadia T, Borthakur G, Stigliano D, Shan J, Kantarjian H. Nilotinib as front-line treatment for patients with chronic myeloid leukemia in early chronic phase. J Clin Oncol. 2010 Jan 20;28(3):392-7. doi: 10.1200/JCO.2009.25.4896. Epub 2009 Dec 14.
• Rosti G, Palandri F, Castagnetti F, Breccia M, Levato L, Gugliotta G, Capucci A, Cedrone M, Fava C, Intermesoli T, Cambrin GR, Stagno F, Tiribelli M, Amabile M, Luatti S, Poerio A, Soverini S, Testoni N, Martinelli G, Alimena G, Pane F, Saglio G, Baccarani M; GIMEMA CML Working Party. Nilotinib for the frontline treatment of Ph(+) chronic myeloid leukemia. Blood. 2009 Dec 3;114(24):4933-8. doi: 10.1182/blood-2009-07-232595. Epub 2009 Oct 12.
• Buchdunger E, Cioffi CL, Law N, Stover D, Ohno-Jones S, Druker BJ, Lydon NB. Abl protein-tyrosine kinase inhibitor STI571 inhibits in vitro signal transduction mediated by c-kit and platelet-derived growth factor receptors. J Pharmacol Exp Ther. 2000 Oct;295(1):139-45.
• Ibrahim A, Moukalled N, Mahfouz R, El Cheikh J, Bazarbachi A, Abou Dalle I. Safety and Efficacy of Elective Switch from Nilotinib to Imatinib in Newly Diagnosed Chronic Phase Chronic Myeloid Leukemia. Clin Hematol Int. 2022 May 12;4(1-2):30-34. doi: 10.1007/s44228-022-00001-x. eCollection 2022 Jun.

Study record dates

Study Major Dates

• Study Start: August 1, 2010
• Primary Completion (Estimated): July 1, 2025
• Study Completion (Estimated): July 1, 2025

Study Registration Dates

• First Submitted: February 24, 2011
• First Submitted That Met QC Criteria: March 15, 2011
• First Posted (Estimated): March 16, 2011

Study Record Updates

• Last Update Posted (Estimated): January 31, 2024
• Last Update Submitted That Met QC Criteria: January 30, 2024
• Last Verified: January 1, 2024

More Information

Terms related to this study

• Keywords: imatinib mesylate; chronic myelogenous leukemia; nilotinib; complete cytogenetic response
• Additional Relevant MeSH Terms: Pathologic Processes; Neoplasms by Histologic Type; Neoplasms; Disease Attributes; Bone Marrow Diseases; Hematologic Diseases; Myeloproliferative Disorders; Chronic Disease; Leukemia; Leukemia, Myeloid; Leukemia, Myelogenous, Chronic, BCR-ABL Positive; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; Antineoplastic Agents; Protein Kinase Inhibitors; Imatinib Mesylate
• Other Study ID Numbers: IM.AB.17