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Phase II trials in patients with carcinoma of unknown primary: a pooled data analysis

  • PHASE II STUDIES
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Summary

Background The management of carcinoma of unknown primary site remains debatable. The literature data consists of about 29 phase-II studies investigating 38 regimens, providing a broad range of response rates (RR). Methods We performed a pooled published data analysis to identify the factors influencing RR in these 29 studies. Results In front-line treatment, the overall RR was 31% (430/1,380). At least nine factors significantly influenced the reported RR, excluding drugs under investigation, such as the impact factor of the journal, single-centre study, some eligibility criteria, central radiological review, sample size calculation based on statistical hypothesis and stratification. Two drugs seem to improve RR: cisplatin and doxorubicin. Two drugs seem to be associated with a worse RR: irinotecan and carboplatin. Conclusions This pooled data analysis illustrates that in a phase II trial setting, it is impossible to attribute the variation in RR solely to the modification of drugs under investigation.

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Acknowledgement

Support for this study was provided by Chugai-Pharma France.

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Correspondence to Nicolas Penel.

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Adenis, A., Ferté, C. & Penel, N. Phase II trials in patients with carcinoma of unknown primary: a pooled data analysis. Invest New Drugs 28, 178–184 (2010). https://doi.org/10.1007/s10637-009-9261-5

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