Acute Lymphoblastic Leukemia Clinical Trial
Official title:
A Phase I, Open-label, Multi-center Study of Clofarabine in Japanese Paediatric Patients With Relapsed or Refractory Acute Lymphoblastic Leukaemia
The purpose of this study is primarily to assess the safety, tolerability and pharmacokinetics (PK) of clofarabine intravenously administered to pediatric patients with relapsed or refractory acute lymphoblastic leukemia (ALL) or for whom no other therapy with greater potential clinical benefit exists. The dosing regimen for the intravenous (IV) clofarabine is 30 or 52 mg/m2/day for 5 consecutive days. The secondary objectives are to document the activity of clofarabine and to explore the impact of deoxycytidine kinase (dCK) promoter polymorphism on PK and treatment outcome.
This is a Phase I Study of Clofarabine in Japanese Paediatric Patients With Relapsed or
Refractory Acute Lymphoblastic Leukaemia.
Subjects will receive intravenous administration of clofarabine at 30 or 52 mg/m2/day (2
hours) for 5 consecutive days and then the administration will be withheld until Day 14. If
there is no evidence of recovery in neutrophil (≥750/mm3) and/or platelet count
(≥50,000/mm3), the therapy may be withheld up to Day 42. However, in the absence of
progression based on the judgment of the investigator after each cycle of treatment and the
benefit of continued treatment is judged to exceed the risk, subjects may receive up to a
total of six cycles. If a subject is receiving two or more cycles, a written consent must be
obtained prior to start of Cycle 2.
When a subject completes the final dose, the safety will be observed and followed-up for 45
days after the final study drug administration.
Cohort 1 will receive 30 mg/m2/day x 5 days at Cycle 1 and will be assessed for
tolerability. Samples will be drawn to assess pharmacokinetics at this dose. If subjects do
not develop adverse events indicative of dose limiting toxicity (DLT) at Cycle 1, the dose
will be increased to 52 mg/m2/day x 5 days from Cycle 2 and the subjects will be assessed
for safety and activity only.
Cohort 2 will receive 52 mg/m2/day x 5 days at Cycle 1 and will be assessed for the
tolerability. Samples will be drawn to assess pharmacokinetics at this dose.
Whether or not proceeding to Cohort 2 after the Cycle 1 of Cohort 1 is completed will be
determined by the sponsor based on the assessment of the safety data and the recommendation
of the Data Safety Monitoring Board (DSMB).
;
Allocation: Non-Randomized, Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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