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Efficacy of pazopanib monotherapy in patients who had been heavily pretreated for metastatic soft tissue sarcoma: a retrospective case series

Authors
 Kwai Han Yoo  ;  Hyo Song Kim  ;  Su Jin Lee  ;  Se Hoon Park  ;  Sung Joo Kim  ;  Soo Hee Kim  ;  Yoon La Choi  ;  Kyoo-Ho Shin  ;  Yong Jin Cho  ;  Jeeyun Lee  ;  Sun Young Rha 
Citation
 BMC Cancer, Vol.15 : 154-154, 2015 
Journal Title
 BMC Cancer 
ISSN
 1471-2407 
Issue Date
2015
Abstract
BACKGROUND: We retrospectively reviewed outcomes of treatment with pazopanib, an oral multi-tyrosine kinase angiogenesis inhibitor, in patients with advanced soft tissue sarcoma, a rare and heterogeneous tumor group with limited treatment options. METHODS: Between 2009 and 2013, 43 patients with metastatic soft tissue sarcoma received pazopanib as salvage chemotherapy after one or more cytotoxic regimens. Response rate, progression-free survival, and overall survival were analyzed according to histological subtype, Eastern Cooperative Oncology Group performance status, and metastatic site. RESULTS: Common histological subtypes included leiomyosarcoma (n = 9), angiosarcoma (n = 6), malignant fibrous histiocytoma/undifferentiated pleomorphic sarcoma (MFH/UPS, n = 5), malignant peripheral nerve sheath tumor (MPNST, n = 5), and synovial sarcoma (n = 4). Nineteen patients (44.2%) received more than two chemotherapy regimens before pazopanib. At the time of analysis, 208 treatment cycles of pazopanib had been administered (median, 4.8 cycles per patient), and no treatment-related mortality occurred. The disease control rate was 61.0% (95% confidence interval [CI], 46.1-75.9%), and the overall response rate was 17.1% (partial response, n = 7; complete response, n = 0). Partial response was achieved in two patients with synovial sarcoma, two with MFH/UPS, one with MPNST, one with leiomyosarcoma, and one with angiosarcoma. The median lengths of progression-free survival and overall survival were 5.0 months (95% CI, 3.6-6.4 months) and 8.2 months (95% CI, 5.8-10.6 months), respectively. Progression-free survival was shorter in the patients with liposarcoma and rhabdomyosarcoma (1.3 and 0.9 months, respectively) than in those with leiomyosarcoma, MPNST, MFH/UPS, and synovial sarcoma (5.6, 6.5, 7.1, and 7.7 months, respectively). CONCLUSIONS: Pazopanib demonstrated acceptable antitumor activity in the Asian patients who had been heavily pretreated for sarcoma, with seemingly more favorable results in the patients with leiomyosarcoma, MPNST, MFH/UPS, and synovial sarcoma than in those with liposarcoma and rhabdomyosarcoma.
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DOI
10.1186/s12885-015-1160-x
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Soo Hee(김수희)
Kim, Hyo Song(김효송) ORCID logo https://orcid.org/0000-0002-0625-9828
Rha, Sun Young(라선영) ORCID logo https://orcid.org/0000-0002-2512-4531
Shin, Kyoo Ho(신규호)
Cho, Yong Jin(조용진)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/140322
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