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Study of Dasatinib vs Imatinib in Patients With Chronic Myeloid Leukemia (CML) Who Did Not Have Favorable Response to Imatinib (DASCERN)

This study is ongoing, but not recruiting participants.
ICON Clinical Research
Molecular MD
Q2 solutions
Donald E. Morisky
MD Anderson Symptom Inventory (MDASI-CML)
OBiS, Inc
Steering Committee
Information provided by (Responsible Party):
Bristol-Myers Squibb Identifier:
First received: May 4, 2012
Last updated: April 17, 2017
Last verified: March 2017
The purpose of this study is to test the hypothesis that patients with CML who have not achieved optimal response after 3 months of treatment with imatinib will have a better response by switching to dasatinib compared to staying on their original imatinib regimen.

Condition Intervention Phase
Chronic Phase Chronic Myeloid Leukemia
Drug: Imatinib
Drug: Dasatinib
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: An Open Label, Randomized (2:1) Phase IIb Study of Dasatinib Versus Imatinib in Patients With Chronic Phase Chronic Myeloid Leukemia Who Have Not Achieved an Optimal Response to 3 Months of Therapy With 400 mg Imatinib

Resource links provided by NLM:

Further study details as provided by Bristol-Myers Squibb:

Primary Outcome Measures:
  • Percentage of patients achieving optimal response after 12 months of CML treatment [ Time Frame: 12 months after the first day treatment with first-line imatinib ]

Secondary Outcome Measures:
  • Time to Major Molecular Response (MMR) [ Time Frame: Up to 10 years ]
    Time to MMR is how fast patients achieve optimal response. It is the time between randomization date and first date that MMR criteria are satisfied.

  • Time to Molecular Response (MR)^4.5 [ Time Frame: Up to 10 years ]
    Time to MR^4.5 is how fast patients achieve a deeper response. It is the time between randomization date and first date that MR^4.5 criteria are satisfied.

  • Progression Free Survival (PFS) [ Time Frame: Up to 10 years ]
    PFS is how long patients are likely to live without progression of their disease. It is the time from randomization date to progression date or death date, whichever occurs first.

  • Overall Survival (OS) [ Time Frame: Up to 10 years ]
    OS is how long patients are likely to remain alive. It is the time from randomization date to death date.

Estimated Enrollment: 258
Study Start Date: October 2012
Estimated Study Completion Date: February 2022
Estimated Primary Completion Date: January 2022 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Arm 1: Imatinib (≥400 mg)
Imatinib ≥400 mg tablets by mouth once daily (QD) or twice daily (BID) up to 60 months
Drug: Imatinib
Other Names:
  • Gleevec
  • Glivec
Active Comparator: Arm 2: Dasatinib (100 mg)
Dasatinib 100 mg tablet by mouth QD up to 60 months
Drug: Dasatinib
Other Name: Sprycel


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

For more information regarding BMS clinical trial participation, please visit

Inclusion Criteria:

  • Chronic Phase (CP)-CML Ph+ patients with complete hematologic response (CHR) but with one log BCR-ABL reduction (BCR-ABL level >10% IS) 3 months of imatinib 400mg treatment. (Imatinib transient dose adjustments due to Adverse Event (AEs) are allowed with a maximum of 2 weeks interruption of treatment with imatinib (cumulative) within the 3 month period before randomization). Imatinib monotherapy must have been started within 6 months of CP-CML diagnosis (Ph + /BCR-ABL detection)
  • Currently tolerating imatinib 400mg QD. Patients with prior imatinib treatment interruption or dose reductions are required to be on treatment with 400 mg imatinib for two weeks immediately prior to randomization to ensure tolerance to imatinib
  • Eastern Co-Operative Group (ECOG) performance status = 0 - 2
  • Adequate renal function defined as serum creatinine ≤3 times the institutional upper limit of normal (ULN)
  • Adequate hepatic function defined as: total bilirubin ≤2.0 times the institutional ULN; alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤2.5 times the institutional ULN

Exclusion Criteria:

  • Previous diagnosis of accelerated phase or blast crisis
  • Subjects with clonal evolution in Ph+ cells observed in ≥2 metaphases at baseline bone marrow cytogenetic test, unless the same abnormalities were present at diagnosis. Patients with no evidence of clonal evolution, including those patients whose cytogenetic testing fails or bone marrow aspiration is a dry tap at 3 months, are eligible for the study
  • Subjects with less than CHR after 3 months of imatinib treatment or lost CHR after initial achievement
  • Documented T315I/A, F317L, or V299L mutations (if already available - not required for screening)
  • A serious uncontrolled medical disorder or active infection that would impair the ability of the subject to receive protocol therapy
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01593254

  Show 98 Study Locations
Sponsors and Collaborators
Bristol-Myers Squibb
ICON Clinical Research
Molecular MD
Q2 solutions
Donald E. Morisky
MD Anderson Symptom Inventory (MDASI-CML)
OBiS, Inc
Steering Committee
Study Director: Bristol-Myers Squibb Bristol-Myers Squibb
  More Information

Additional Information:
Responsible Party: Bristol-Myers Squibb Identifier: NCT01593254     History of Changes
Other Study ID Numbers: CA180-399
2011-006181-41 ( EudraCT Number )
Study First Received: May 4, 2012
Last Updated: April 17, 2017

Additional relevant MeSH terms:
Leukemia, Myeloid
Leukemia, Myelogenous, Chronic, BCR-ABL Positive
Leukemia, Myeloid, Chronic-Phase
Neoplasms by Histologic Type
Myeloproliferative Disorders
Bone Marrow Diseases
Hematologic Diseases
Imatinib Mesylate
Antineoplastic Agents
Protein Kinase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action processed this record on May 25, 2017