Erwinase for Patients With Relapsed/Refractory Acute Lymphoblastic Leukemia (ALL) (IND 104224)

Phase 1

Terminated

Conditions: Relapsed Acute Lymphoblastic Leukemia
Allergy to PEG e.Coli Asparaginase
Allergy to Native e.Coli Asparaginase

Interventions: Drug: Erwinase
Drug: Vincristine
Drug: Dexamethasone
Drug: Doxorubicin
Drug: Cytarabine
Drug: Methotrexate
Drug: Triple Intrathecal Therapy
Drug: Dexrazoxane

Registration Number: NCT00928200

Lead Sponsor: Therapeutic Advances in Childhood Leukemia Consortium

Brief Summary: This is a phase I study using the Erwinia form of asparaginase in place of the E. coli form using a standard re-induction regimen (Vincristine, Dexamethasone, Doxorubicin) for patients with relapsed ALL who have developed an allergy to the E. coli formulation. This study will administer the drug intravenously instead of the usual intramuscular route. The dose of Erwinia will be escalated in the absence of dose limiting toxicity. Patients must have first or second relapse ALL with a history of prior systemic reaction to E. coli asparaginase.

Detailed Description: Significance

1. Substitution of Erwinase after E.coli asparaginase allergy has been standard practice despite the paucity of evidence regarding its efficacy and uncertainty about dose. Definition of an appropriate dose and schedule of Erwinase that provides reliable asparagine depletion may be useful for patients with clinical allergy to E. coli asparaginase, both in first remission or after relapse.

2. Patients in relapse may have a different level of asparagine synthesis than patients maintaining remission and require different asparaginase dosing.5

3. Intravenous administration provides more rapid and predictable asparagine depletion with less discomfort and danger of bleeding for often thrombocytopenic patients than intramuscular administration.

4. Vincristine, doxorubicin, asparaginase, and dexamethasone with dexrazoxane is clinically relevant for a population with first marrow relapse.

5. Vincristine, doxorubicin, asparaginase, and dexamethasone with dexrazoxane is clinically relevant for a population with second marrow relapse, if the duration of CR2 \> 18 months year.

Recruitment & Eligibility

Status: TERMINATED

Sex: All

Target Recruitment: 1

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type: INTERVENTIONAL

Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Single Arm	Erwinase	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Triple Intrathecal Therapy	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Dexamethasone	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Cytarabine	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Vincristine	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Doxorubicin	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Methotrexate	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.
Single Arm	Dexrazoxane	All patients receive Vincristine, Dexamethasone, Doxorubicin, and Cytarabine. Dexrazoxane optional on Day 1. Erwinase is started between Days 3-5 and is given every M-W-F for a total of 10 doses. Patients with CNS 1 or 2 receive Methotrexate intrathecally on Day 15. Patients with CNS 3 receive Triple Intrathecal Therapy (Methotrexate, Cytarabine and Hydrocortisone) on Days 8, 15, and 22.

Primary Outcome Measures

Name	Time	Method
Occurrence of a Dose-Limiting Toxicity	Beginning with the first dose of investigational product until 30 days following the last dose of Erwinase	The MTD in each stratum will be the highest dose at which 1 or fewer of six patients experience DLT during cycle 1 of therapy.

Secondary Outcome Measures

Name	Time	Method
Response Rate and Minimum Residual Disease	After completion of treatment course	Disease response evaluated by examination and labs. MRD evaluated from marrow samples.
Asparaginase Activity	PK samples to be collected Pre-Tx, and and Erwinase Doses 3, 6 and 9 and Day 29	Activity levels assessed from PK sampling