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ABSTRACT: Background
We evaluated the efficacy of imatinib mesylate in addition to hydroxyurea in patients with recurrent glioblastoma (GBM) who were either on or not on enzyme-inducing anti-epileptic drugs (EIAEDs).Methods
A total of 231 patients with GBM at first recurrence from 21 institutions in 10 countries were enrolled. All patients received 500 mg of hydroxyurea twice a day. Imatinib was administered at 600 mg per day for patients not on EIAEDs and at 500 mg twice a day if on EIAEDs. The primary end point was radiographic response rate and secondary end points were safety, progression-free survival at 6 months (PFS-6), and overall survival (OS).Results
The radiographic response rate after centralised review was 3.4%. Progression-free survival at 6 months and median OS were 10.6% and 26.0 weeks, respectively. Outcome did not appear to differ based on EIAED status. The most common grade 3 or greater adverse events were fatigue (7%), neutropaenia (7%), and thrombocytopaenia (7%).Conclusions
Imatinib in addition to hydroxyurea was well tolerated among patients with recurrent GBM but did not show clinically meaningful anti-tumour activity.
SUBMITTER: Reardon DA
PROVIDER: S-EPMC2795431 | biostudies-literature | 2009 Dec
REPOSITORIES: biostudies-literature
Reardon D A DA Dresemann G G Taillibert S S Campone M M van den Bent M M Clement P P Blomquist E E Gordower L L Schultz H H Raizer J J Hau P P Easaw J J Gil M M Tonn J J Gijtenbeek A A Schlegel U U Bergstrom P P Green S S Weir A A Nikolova Z Z
British journal of cancer 20091110 12
<h4>Background</h4>We evaluated the efficacy of imatinib mesylate in addition to hydroxyurea in patients with recurrent glioblastoma (GBM) who were either on or not on enzyme-inducing anti-epileptic drugs (EIAEDs).<h4>Methods</h4>A total of 231 patients with GBM at first recurrence from 21 institutions in 10 countries were enrolled. All patients received 500 mg of hydroxyurea twice a day. Imatinib was administered at 600 mg per day for patients not on EIAEDs and at 500 mg twice a day if on EIAED ...[more]