Abstract:
BACKGROUND:Hemangiopericytomas and malignant solitary fibrous tumors (HPC/SFT) are rare, closely related sarcomas with unpredictable behavior that respond infrequently to chemotherapy. An optimal systemic treatment strategy for advanced HPC/SFT has not yet been identified. METHODS:We retrospectively analyzed the records of 14 patients with histopathologically confirmed HPC/SFT who were treated at The University of Texas MD Anderson Cancer Center between May 2005 and June 2007. All patients were treated with temozolomide 150 mg/m(2) orally on days 1-7 and days 15-21 and bevacizumab 5 mg/kg intravenously on days 8 and 22, repeated at 28-day intervals. Computed tomography assessment of tumor size and density (Choi criteria) was used to determine the best response to therapy. The Kaplan-Meier method was used to estimate progression-free survival. RESULTS:The median follow-up period was 34 months. Eleven patients (79%) achieved a Choi partial response, with a median time to response of 2.5 months. Two patients (14%) had stable disease as the best response, and 1 patient (7%) had Choi progressive disease as the best response. The estimated median progression-free survival was 9.7 months, with a 6-month progression-free rate of 78.6%. The most frequently observed toxic effect was myelosuppression. CONCLUSION:Combination therapy with temozolomide and bevacizumab is a generally well-tolerated and clinically beneficial regimen for HPC/SFT patients. Additional investigation in a controlled, prospective trial is warranted.
journal_name
Cancerjournal_title
Cancerauthors
Park MS,Patel SR,Ludwig JA,Trent JC,Conrad CA,Lazar AJ,Wang WL,Boonsirikamchai P,Choi H,Wang X,Benjamin RS,Araujo DMdoi
10.1002/cncr.26098subject
Has Abstractpub_date
2011-11-01 00:00:00pages
4939-47issue
21eissn
0008-543Xissn
1097-0142journal_volume
117pub_type
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