A Study of Imatinib Versus Nilotinib in Adult Patients With Newly Diagnosed Philadelphia Chromosome Positive (Ph+) Chronic Myelogenous Leukemia in Chronic Phase (CML-CP)

In this study, the efficacy and safety of two nilotinib doses, 300 mg twice daily and 400 mg twice daily, were compared with imatinib 400 mg once daily in newly diagnosed patients with Philadelphia chromosome-positive (Ph+) Chronic Myelogenous Leukemia in the chronic phase (CML-CP). An extension protocol was included in this study design to allow patients who did not show sufficient response to their assigned treatments the opportunity to receive imatinib 400 mg BID (option available until protocol amendment 7) or nilotinib 400 mg BID, using an abbreviated safety and efficacy assessment schedule.

Sex

All

Minimum age

18 Years

Key Inclusion criteria:

* Chronic myelogenous leukemia in chronic phase patients within the first 6 months of diagnosis.
* Diagnosis of chronic myelogenous leukemia in chronic phase with confirmation of Philadelphia chromosome of (9:22) translocations

Key Exclusion criteria:

* Previously documented T315I mutation
* Treatment with a tyrosine kinase inhibitor prior to study entry is not allowed except for no more than 2 weeks in duration of imatinib
* Any medical treatment for CML prior to study entry for longer than 2 weeks with the exception of hydroxyurea and/or anagrelide
* Impaired cardiac function.
* Severe or uncontrolled medical conditions (i.e. uncontrolled diabetes, active or uncontrolled infection).
* Use of therapeutic coumarin derivatives (i.e., warfarin, acenocoumarol, phenprocoumon)
* Currently receiving treatment with any medications that have the potential to prolong the QT interval.

• DERIVEDHughes TP, Hochhaus A, Kantarjian HM, Cervantes F, Guilhot F, Niederwieser D, le Coutre PD, Rosti G, Ossenkoppele G, Lobo C, Shibayama H, Fan X, Menssen HD, Kemp C, Larson RA, Saglio G. Safety and efficacy of switching to nilotinib 400 mg twice daily for patients with chronic myeloid leukemia in chronic phase with suboptimal response or failure on front-line imatinib or nilotinib 300 mg twice daily. Haematologica. 2014 Jul;99(7):1204-11. doi: 10.3324/haematol.2013.091272. Epub 2014 Feb 14. PMID 24532039
• DERIVEDHughes TP, Saglio G, Kantarjian HM, Guilhot F, Niederwieser D, Rosti G, Nakaseko C, De Souza CA, Kalaycio ME, Meier S, Fan X, Menssen HD, Larson RA, Hochhaus A. Early molecular response predicts outcomes in patients with chronic myeloid leukemia in chronic phase treated with frontline nilotinib or imatinib. Blood. 2014 Feb 27;123(9):1353-60. doi: 10.1182/blood-2013-06-510396. Epub 2013 Dec 11. PMID 24335106
• DERIVEDHochhaus A, Saglio G, Larson RA, Kim DW, Etienne G, Rosti G, De Souza C, Kurokawa M, Kalaycio ME, Hoenekopp A, Fan X, Shou Y, Kantarjian HM, Hughes TP. Nilotinib is associated with a reduced incidence of BCR-ABL mutations vs imatinib in patients with newly diagnosed chronic myeloid leukemia in chronic phase. Blood. 2013 May 2;121(18):3703-8. doi: 10.1182/blood-2012-04-423418. Epub 2013 Mar 15. PMID 23502220
• DERIVEDBranford S, Kim DW, Soverini S, Haque A, Shou Y, Woodman RC, Kantarjian HM, Martinelli G, Radich JP, Saglio G, Hochhaus A, Hughes TP, Muller MC. Initial molecular response at 3 months may predict both response and event-free survival at 24 months in imatinib-resistant or -intolerant patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase treated with nilotinib. J Clin Oncol. 2012 Dec 10;30(35):4323-9. doi: 10.1200/JCO.2011.40.5217. Epub 2012 Oct 29. PMID 23109697
• DERIVEDLarson RA, Yin OQ, Hochhaus A, Saglio G, Clark RE, Nakamae H, Gallagher NJ, Demirhan E, Hughes TP, Kantarjian HM, le Coutre PD. Population pharmacokinetic and exposure-response analysis of nilotinib in patients with newly diagnosed Ph+ chronic myeloid leukemia in chronic phase. Eur J Clin Pharmacol. 2012 May;68(5):723-33. doi: 10.1007/s00228-011-1200-7. Epub 2011 Dec 30.