Conditions: Leukemia
Keywords: Relapsed and Refractory Leukemia
Allocation: NON_RANDOMIZED | Intervention model: PARALLEL
Enrollment: 63
Healthy volunteers: no

Brief summary:
The purpose of this clinical research study was to establish a recommended phase 2 once daily (QD) dose of dasatinib and to assess the efficacy of the investigational drug for relapsed or refractory (resistant to previous treatment) leukemia in children and adolescents. The side effects that this oral investigational drug may have in children, and the levels of the drug in the blood, will be studied at different doses.

Detailed description:

Arms:
arm 1: Participants with imatinib-resistant Philadelphia chromosome positive (Ph+) chronic myeloid leukemia (CML) in chronic phase (CP) arm 2: Participants with imatinib-resistant or imatinib-intolerant Ph+ CML in accelerated phase (AP), or in myeloid blast phase (MBP), or in lymphoid blast phase (LBP); or relapsed or refractory Ph+ acute lymphoblastic leukemia (ALL) after imatinib use; or second or subsequent relapse of Ph+ acute myeloid leukemia (AML) arm 3: Participants with second or subsequent relapse of Ph- ALL or Ph- AML

Interventions: intervention 1: Dasatinib intervention 2: Dasatinib intervention 3: Dasatinib
Intervention descriptions: intervention 1: Tablets, Oral, If necessary in participants who could not swallow, tablets were dispersed into 30 cc of 100% fruit juice with no preservatives (minute maid lemonade or orange juice or apple juice). Starting Dose Level of 60 mg/m\^2; Escalated/Dose Level 2 of 80 mg/m\^2. Once daily (QD), as long as clinical benefit was maintained.

Intra-participant dose escalation was allowed based on tolerance and on individual response. The starting dose for subsequent participants in a stratum may have been escalated depending on safety, assessed by prior intra-participant dose-escalation, and lack of efficacy in previous participants. Treatment courses were defined as 3 weeks (21 days plus any required delay); for participants who stayed on treatment \> 12 months, courses after 12 months were defined in quartiles of 13 weeks. Participants were to be followed until death or up to 5 years after end-of-treatment (EOT). intervention 2: Tablets, Oral, If necessary in participants who could not swallow, tablets were dispersed into 30 cc of 100% fruit juice with no preservatives (minute maid lemonade or orange juice or apple juice). Starting Dose Level of 60 mg/m\^2; Escalated/Dose Level 2 of 80 mg/m\^2. QD, as long as clinical benefit was maintained.

Intra-participant dose escalation was allowed based on tolerance and on individual response. The starting dose for subsequent participants in a stratum may have been escalated depending on safety, assessed by prior intra-participant dose-escalation, and lack of efficacy in previous participants. Treatment courses were defined as 3 weeks (21 days plus any required delay); for participants who stayed on treatment \> 12 months, courses after 12 months were defined in quartiles of 13 weeks. Participants were to be followed until death or up to 5 years after EOT. intervention 3: Tablets, Oral, If necessary in participants who could not swallow, tablets were dispersed into 30 cc of 100% fruit juice with no preservatives (minute maid lemonade or orange juice or apple juice). Starting Dose Level of 60 mg/m\^2; Escalated/Dose level 2 of 80 mg/m\^2, Escalated/Dose level 3 of 100 mg/m\^2, and Escalated/Dose level 4 of 120 mg/m\^2. QD, as long as clinical benefit was maintained.

Intra-participant dose escalation was allowed based on tolerance and on individual response. The starting dose for subsequent participants in a stratum may have been escalated depending on safety, assessed by prior intra-participant dose-escalation, and lack of efficacy in previous participants. Treatment courses were defined as 3 weeks (21 days plus any required delay); for participants who stayed on treatment \> 12 months, courses after 12 months were defined in quartiles of 13 weeks. Participants were to be followed until death or up to 5 years after EOT.

Protocol document: