Abstract
Until today, radiotherapy and concomitant chemoradiation are considered standard of care for locally advanced and inoperable HNSCC. Altered fractionation versus standard fractionation led to a small but significant absolute OS benefit of 3.4 % at 5 years in patients with LAD-HNSCC corresponding to a HR reduction for death of 8 %. Hyperfractionation as a specific subtype of altered fractionation led to a highly significant absolute OS and LRC benefit of 8.2 % and 9.4 %, respectively, compared with standard fractionation corresponding to a HR reduction for death of 22 %. Hyperfractionation is a good alternative for definitive treatment of LAD-HNSCC in patients who are not fit for concurrent chemoradiation or who have a high Charlson comorbidity score.
All types of chemoradiation (induction, concurrent and adjuvant) versus radiation alone led to a general absolute overall survival benefit of 4.5 % corresponding to a HR reduction of death of 12 % (p = .0001) at 5 years. For 50 trials of concurrent chemoradiation, the absolute benefit was 6.5 % at 5 years with a corresponding HR reduction of death of 19 % (p < .0001). Platinum/5-FU-based chemoradiation versus radiation alone showed a reduction in local and distant failure rates of 13.5 % and 2.9 %, respectively, corresponding to HR reductions of about 25 % for death at 5 years. Mitomycin C-based chemoradiation is a reasonable alternative for elderly frail patients with large and hypoxic tumours, who are not candidates for platinum-based chemotherapy. Patients above the age of 70 years generally do not or only marginally benefit from altered fractionation or chemoradiation.
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Budach, V. (2017). Comprehensive Overview: Definitive Radiotherapy and Concurrent Chemoradiation in Locally Advanced Head and Neck Cancer. In: Vermorken, J., Budach, V., Leemans, C., Machiels, JP., Nicolai, P., O'Sullivan, B. (eds) Critical Issues in Head and Neck Oncology. Springer, Cham. https://doi.org/10.1007/978-3-319-42909-0_9
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