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Eur J Cancer. 2011 Mar;47(4):515-9. doi: 10.1016/j.ejca.2010.11.025. Epub 2011 Jan 19.

Feasibility of metronomic oral cyclophosphamide plus prednisolone in elderly patients with inoperable or metastatic soft tissue sarcoma.

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1
Sarcoma Unit, Herault Ward, Department of Medicine, Institut Gustave Roussy, Université Paris 11, 39 Rue Camille Desmoulins, Villejuif, France. olivier.mir@cch.aphp.fr

Abstract

BACKGROUND:

The number of elderly people with soft tissue sarcoma (STS) is increasing. A sizeable population of elderly patients with STS is unfit for conventional doxorubicin- or ifosfamide-based chemotherapy. We assessed the feasibility of metronomic oral cyclophosphamide (CPM) in this population.

PATIENTS AND METHODS:

Patients aged 65 years or older with unresectable STS received CPM 100mg twice daily plus prednisolone 20mg daily, the first week of a 2-week cycle in the outpatient setting. Main evaluation criterion was safety. Secondary evaluation criteria were objective response rate and progression-free survival.

RESULTS:

Twenty-six patients (median age: 72, range 66-88) received a total of 330 cycles (median per patient: 10, range 2-41) as first (n=19) or second-line chemotherapy (n=7). The most frequent histological subtypes were poorly differentiated sarcoma (n=8), leiomyosarcoma and liposarcoma (n = 5 each) and angiosarcoma (n=3). Grade ≥3 lymphopenia was observed in 81% of pts but no opportunist infection occurred. Grade 3 anaemia and thrombocytopenia occurred in 2 pts (8%) each. No other grade 3-4 toxicity was seen. The response rate was 26.9% (95%CI: 9.9-44.0) and the disease control rate (responses and stable disease >12 weeks) was 69.2% (95%CI: 51.5-87.0). One complete (hepatic epithelioid haemangio-endothelioma) and 6 partial responses (including 5pts with radiation-induced sarcomas) were seen. Progression-free survival ranged from 0 to 20.6 months (median: 6.8 months) and was significantly longer in patients with radiation-induced sarcomas (median: 7.8 versus 5.2 months, p=0.02).

CONCLUSION:

Metronomic CPM showed good safety results for this frail population, with promising activity in patients with radiation-induced sarcoma. Toxicity profile was favourable, allowing prolonged home staying and rare treatment discontinuations. A larger prospective study is warranted to confirm these encouraging results in elderly with STS.

PMID:
21251814
DOI:
10.1016/j.ejca.2010.11.025
[Indexed for MEDLINE]
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