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The study is aimed to treat low-risk MDS patients,who are dependent on red-blood cell transfusion due to disease-related anemia, and who have a proven resistance towards treatment with erythropoetin-stimulating agents (ESA). The study randomizes patients to receive a treatment with the demethylating agent 5-azacytidine alone or in combination with an ESA. The study thus evaluates, if efficacy of 5-azacytidine, notably on the red-blood cell transfusion-dependence is comparable/inferior to a combination treatment with azacitidine and an ESA (that is if 5-azacytidine can overcome the resistance towards ESA). Being a phase II study, the study assesses, duration of erythroid response, overall survival and time to progression as well as toxicity.
Phase II Study of Azacitidine (Vidaza®) Combined to Epoetin Beta (NeoRecormon®) in IPSS Low-risk and Intermediate-1 MDS Patients, Resistant to ESA
The Primary Endpoint of this study is to determine the major erythroid response rate after 6 courses, assessed according to IWG 2000 criteria.
The Secondary Endpoints are to determine the percentage of major HI-E and minor HI-E after 4 and 6 courses according to IWG 2000, the HI-E IWG 2006 criteria, the duration of erythroid response, the red blood cell transfusion independence at 4 and 6 months, the overall survival and time to IPSS progression and the toxicity (NCI-CTAE).
The trial will enroll 98 patients (49 patients per arm)
Treatment in arm A:
Azacitidine 75mg/sqm SQ per day for 5 days every 28 days for 6 courses Dosing of each subsequent course will be adapted according to extrahematological toxicity and cytopenias.
In responders after 6 courses of azacitidine according to IWG 2000 criteria (both minor and major erythroid responses of HI-E) 12 identical additional maintenance courses will be delivered every 28 days, unless relapse occurs (according to IWG 2000 criteria).
Treatment in arm B:
• Azacitidine 75mg/sqm SQ per day for 5 days every 28 days for 6 courses.
(dosing of each subsequent course will be adapted according to extra hematological toxicity and cytopenias) AND
• Epoetin beta : 60000U weekly SQ injections Dosing of epoetin beta will be adapted according to current ASH-ASCO guidelines and black box warning of epoetin beta. Epoetin beta therapy may therefore be interrupted, in case of response to azacitidine, as soon as a hemoglobin level of 12g/dl is achieved on two sequential bimonthly blood count measurements.
A 40% dose reduction of epoetin beta will be required if:
- Hb level rise of 1 g/dl is observed within two weeks
- Hb level exceeds 11g/dl
In responders after 6 courses of azacitidine + epoetin beta, according to IWG 2000 criteria (both minor and major erythroid responses of HI-E) 12 identical additional maintenance courses of azacitidine will be delivered every 28 days, unless relapse occurs (according to IWG 2000 criteria) Epoetin beta will be administered as described above.
In both arms, each subsequent course will be delivered
- In absence of persistent grade >2 non-hematological toxicity
- In absence of rehospitalisation for severe bleeding, infection or febrile neutropenia and non-hematological toxicity following the previous course
- If neutrophil counts are > 1G/l or > 50% of baseline neutrophil counts
- If platelets are > 75G/l or > 50% of baseline platelets counts
In case of persistent cytopenia, blood counts will be at least checked every 2 weeks, and the next course delayed until resolution of cytopenia, as defined above.
In case of persistence of cytopenia beyond day 56 of the preceding course, an new evaluation of the disease, using clinical examination, blood and bone marrow examinations +/- cytogenetics will be mandatory before eventually pursuing azacitidine at lower dosing levels.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Azacitidine, Epoetin beta
Groupe Francophone des Myelodysplasies
Published on BioPortfolio: 2014-08-27T03:17:55-0400
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