Abstract
Background
The aims of this study are to evaluate the efficacy and safety of first-line treatment with chemotherapy plus cetuximab in real-world patients with recurrent or metastatic squamous cell carcinoma of the head and neck (RM-SCCHN) and to identify prognostic factors for overall survival (OS).
Methods
This is a prospective observation study involving 20 oncology institutions in Japan. Patients with RM-SCCHN treated with a first-line therapy consisting of cetuximab plus any chemotherapy regimen between December 2013 and February 2017 were enrolled. The primary objective of the study was 1-year OS. Secondary objectives included response rate and adverse events.
Results
Of 120 patients recruited, 114 patients were analyzed. Median age was 64 years. Cetuximab in combination with platinum plus 5-FU (EXTREME regimen) was chosen in 86 patients (75.4%). The median OS was 12.4 months. A point estimate of the 1-year survival rate was 51.1%. Overall response rate was 26.3%. Grade 3 or worse adverse events included neutropenia (22.8%), hypokalemia (9.6%), acneiform rash (7.0%), pneumonitis (1.8%), and infusion-related reaction (0.9%). On multivariate analysis, regional lymph node metastasis, absence of intervention by dermatologists, lack of response to therapy, skin metastasis, and non-EXTREME regimen were identified as independent unfavorable prognostic factors for OS.
Conclusion
The combination of cetuximab plus chemotherapy was tolerable and efficacious in patients with RM-SCCHN in a real-world setting. Clinical outcomes and prognostic factors extracted from this study provide a reference of the current clinical practice as well as for the future development of novel therapy in RM-SCCHN.
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Acknowledgements
This study was supported by the Japanese Radiation Oncology Study Group (JROSG) and financially supported by Merck Biopharma. We thank all participating patients and investigators for their support of the study, and gratefully acknowledge the help of all staff at the Clinical Research Institute, National Hospital Organization Kyushu Cancer Center, with study coordination and data collection.
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This work was supported by Merck Biopharma.
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Dr. Yokota serves in an advisory role for Merck Biopharma, MSD, and Rakuten Medical, and has received lecture fees from Merck Biopharma, Ono Pharmaceutical Co., Ltd., Bristol-Myers Squibb, AstraZeneca, Chugai, MSD, and Eisai. All authors received research funding from Merck Biopharma.
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Yokota, T., Ota, Y., Fujii, H. et al. Real-world clinical outcomes and prognostic factors in Japanese patients with recurrent or metastatic squamous cell carcinoma of head and neck treated with chemotherapy plus cetuximab: a prospective observation study (JROSG12-2). Int J Clin Oncol 26, 316–325 (2021). https://doi.org/10.1007/s10147-020-01817-4
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DOI: https://doi.org/10.1007/s10147-020-01817-4