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Spots Global Cancer Trial Database for Clofarabine, Cytarabine and Mitoxantrone (CLAM) for Relapsed or Refractory AML

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Trial Identification

Brief Title: Clofarabine, Cytarabine and Mitoxantrone (CLAM) for Relapsed or Refractory AML

Official Title: Clofarabine, Cytarabine and Mitoxantrone (CLAM) for Relapsed or Refractory AML

Study ID: NCT02686593

Study Description

Brief Summary: The study aims to evaluate the efficacy of the regimen CLAM in relapsed or refractory AML when used as first salvage for patients to relapse or fail after standard treatment with daunorubicin/cytarabine induction.

Detailed Description: Clofarabine, a second generation purine nucleoside analog, has been evaluated in several studies in relapsed AML.\[1-3\] Safety and dosages of clorafabine have already been determined in previous phase I/II studies. A demonstrable complete remission rate of up to 40% to 50% was shown in relapsed or refractory AML.\[4-6\] Since 2009, Clofarabine (40mg/m2/day for 5 days) in combination with high-dose cytarabine (2g/m2/day for 5 days) (CLARA) was adopted as the re-induction protocol for relapsed or refractory patients with AML at the Department of Medicine, Queen Mary Hospital. We have shown that this protocol is safe, tolerable and effective for relapsed AML. A recent updated analysis (Gill H et al., unpublished) showed a completed response rate of 50.8%. With the CLARA regimen, all patients (N=60) developed grade 3/4 neutropenia and thrombocytopenia. 8% developed grade 3/4 hepatotoxicity and 40% developed febrile neutropenia with clinical sepsis. There is increasing evidence to show that clofarabine is safe and efficacious when combined with the anthracyclines idarubicin or daunorubicin.7,8 In this prospective study, we combine clofarabine and cytarabine (Ara-C) with the topoisomerase II inhibitor mitoxantrone. In this protocol, the dosages of clofarabine and cytarabine will be reduced to 30mg/m2/day and 750mg/m2/day respectively, comparable to most clinical trials. In our previous publication of experience with the use of CLARA by Tse et al and Leung et al, clofarabine at 40mg/m2/day for 5 days was combined with high-dose cytarabine at 2g/m2/day.\[5,6\] The regimen was shown to be safe. The combination of clofarabine with anthracyclines has been evaluated. Mathiesen at al evaluated the CIA regimen comprising clofarabine at 20mg/m2/day from day 1 to day 5, idarubicin at 10mg/m2/day from day 1 to day 3 and cytarabine at 1g/m2/day from day 1 to day 5.\[7\] Abbie et al investigated the regimen comprising Clofarabine at 20mg/m2/day or 25mg/m2/day for 5 days in combination with mitoxantrone and etoposide.7 Based on the clinical trials and our extensive experience with the use of CLARA, the dosages of clofarabine in CLAM was determined. With the significant reduction in the dose of cytarabine to 750mg/m2/day for 5 days in CLAM, the dose of clofarabine was chosen at 30mg/m2/day for 5 days with the aim to maintain the efficacy seen with CLARA. The aim of this combination is to maintain or improve treatment efficacy seen with a lower treatment-related toxicity via dose reduction of clofarabine and cytarabine compared to CLARA. CLAM is expected to be safe and tolerable especially when used as first salvage in patient with a ECOG performance status of 0 or 1. The regimen CLAM has been approved by the institutional review board of Queen Mary Hospital/University of Hong Kong. In a pilot study, 4 patients used the regimen. 2 patients achieved a complete remission. Cardiotoxicity was not seen. Grade 3/4 hepatotoxicity was not seen. There were no treatment-related mortality observed. CLAM was shown to be safe and with manageable toxicity profile. In addition, less myeloid toxicity is expected during consolidation as patients who achieve a remission will have better marrow reserve when compared to those at relapse. Patients will have their cardiac, liver and renal function and performance status evaluated continuously and patients with cardiac dysfunction, significantly impaired renal or liver function and ECOG performance status of 2 or above will be excluded. Thus consolidation with the same dose as with induction is expected to be safe and tolerable. The study aims to evaluate the efficacy of the regimen CLAM in relapsed or refractory AML when used as first salvage for patients to relapse or fail after standard treatment with daunorubicin/cytarabine induction. We aim to improve treatment efficacy at a more tolerable dose of clofarabine and cytarabine compared to CLARA.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

The University of Hong Kong, Hong Kong, , Hong Kong

Contact Details

Name: Harinder Singh, Harry Gill, MD

Affiliation: The University of Hong Kong

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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