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A Phase II, Open Label Study of Clofarabine in Pediatric Patients With Refractory or Relapsed Acute Lymphoblastic Leukemia

Phase 2
21 Years
Not Enrolling
Leukemia, Lymphoblastic, Acute, Pediatric

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Trial Information

A Phase II, Open Label Study of Clofarabine in Pediatric Patients With Refractory or Relapsed Acute Lymphoblastic Leukemia

This is a non-randomized, open label, Phase II study of Clofarabine in pediatric patients
with refractory or relapsed acute lymphoblastic leukemia (ALL). Eligible patients must be
in second or subsequent relapse or be refractory. Forty eligible patients will be enrolled
in a Fleming 2-stage sequential study design in order to better assess the efficacy and
safety of clofarabine in this patient population.

Inclusion Criteria:

- Have a diagnosis of ALL according to FAB classification with greater than or equal to
25% blasts in the bone marrow.

- Be less than or equal to 21 years old at time of initial diagnosis.

- Not be eligible for therapy of higher curative potential, and must be in second or
subsequent relapse and/or refractory. Where an alternative therapy has been shown to
prolong survival in an analogous population, this should be offered to the patient
prior to discussing this study.

- Have a Karnofsky Performance Status (KPS) of >70.

- Provide signed, written informed consent from parent or guardian and assent from
patients greater than or equal to 7 years old according to local IRB and
institutional requirements.

- Be able to comply with study procedures and follow-up examinations.

- Have adequate organ function as indicated by the following laboratory values,
obtained within 2 weeks prior to registration: Serum bilirubin less than or equal to
1.5 x ULN; AST and ALT less than or equal to 5 x ULN; Serum Creatinine less than 2 x
ULN for age. ULN= Institutional Upper Limit of Normal

Exclusion Criteria:

- Received previous treatment with Clofarabine.

- Have had a recent (<30 days) history of fungal or serious bacterial infection or who
are receiving therapeutic antibiotics.

- Are pregnant or lactating. Male and female patients who are fertile must agree to
use an effective means of birth control (i.e., latex condom, diaphragm, cervical cap,
etc) to avoid pregnancy.

- Have psychiatric disorders that would interfere with consent, study participation, or
follow up.

- Are receiving any other chemotherapy. Patients must have been off previous therapy
for at least 2 weeks (with the exception of intrathecal therapy, which is allowed up
to 24hrs prior to 1st of study drug) and must have recovered from acute toxicity of
all previous therapy prior to enrollment. Treatment may start earlier, following
consultation with the ILEX Medical Monitor, if there is evidence of disease relapse
prior to that time.

- Have any other severe concurrent disease, or have a history of serious organ
dysfunction or disease involving the heart, kidney, liver or pancreas.

- Have symptomatic CNS involvement.

- Febrile neutropenia at time of study entry.

- Have received a hematologic stem cell transplant (HSCT) within the previous 3 months
or have active GVHD (greater than or equal to Grade 2).

Type of Study:


Study Design:

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Principal Investigator

Medical Monitor

Investigator Role:

Study Director

Investigator Affiliation:



United States: Food and Drug Administration

Study ID:




Start Date:

May 2002

Completion Date:

January 2006

Related Keywords:

  • Leukemia, Lymphoblastic, Acute, Pediatric
  • CLO212
  • clolar
  • pediatric ALL
  • Leukemia, Lymphoblastic, Acute - pediatric
  • Leukemia
  • Leukemia, Lymphoid
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma



St. Jude Children's Research Hospital Memphis, Tennessee  38105-2794
Texas Children's Cancer Center Houston, Texas  77030-2399
Children's Hospital Los Angeles, California  90027
Children's Hospital Denver, Colorado  80218
Children's Memorial Hospital Chicago, Illinois  60614
Johns Hopkins Children's Center Baltimore, Maryland  
Children's Hospital St. Louis, Missouri  
Memorial Sloan-Kettering New York, New York  
Children's Hospital Philadelphia, Pennsylvania  
Cook's Children's Medical Center Fort Worth, Texas  76104
The University of Texas M.D. Anderson Cancer Center Houston, Texas