Single agent bevacizumab for myelofibrosis: results of the Myeloproliferative Disorders Research Consortium Trial

The myeloproliferative neoplasm, myelofibrosis, is a morbid and frequently fatal illness encompassing primary myelofibrosis, and end-stage essential thrombocythemia and polycythemia. Bevacizumab (15 mg/kg intravenous (i.v.) every 21 days) was tested in a phase II international trial conduct...

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Main Authors: Ruben A. Mesa, Richard T. Silver, Srdan Verstovsek, John Mascarenhas, Craig M. Kessler, Damiano Rondelli, Judy D. Goldberg, Roberto Marchioli, Erin P. Demakos, Lewis R. Silverman, Ronald Hoffman
Format: Article
Language:English
Published: Ferrata Storti Foundation 2013-06-01
Series:Haematologica
Online Access:https://haematologica.org/article/view/12126
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Summary:The myeloproliferative neoplasm, myelofibrosis, is a morbid and frequently fatal illness encompassing primary myelofibrosis, and end-stage essential thrombocythemia and polycythemia. Bevacizumab (15 mg/kg intravenous (i.v.) every 21 days) was tested in a phase II international trial conducted by the Myeloproliferative Disorders Research Consortium. Thirteen patients were enrolled in the first stage of this 2-stage trial. Among the 11 patients who received therapy, only 3 received more than 4 cycles of therapy; none of the patients achieved an objective response. Furthermore, significant toxicity, not directly related to the vascular or gastrointestinal events typically associated with the anti-VEGF monoclonal antibody preparation in other disease states, was observed. Lack of objective responses coupled with toxicity led to the decision to terminate the study early. If future studies incor- porate bevacizumab in combination therapy for myelofibrosis, more modest doses should be considered. (clinicaltrials.gov Identifier 00667277).
ISSN:0390-6078
1592-8721