RT Journal Article T1 Differential outcome of concurrent radiotherapy plus epidermal growth factor receptor inhibitors versus radiotherapy plus cisplatin in patients with human papillomavirus-related head and neck cancer. A1 Pajares, Bella A1 Trigo, José M A1 Toledo, María D A1 Álvarez, Martina A1 González-Hermoso, Carlos A1 Rueda, Antonio A1 Medina, José A A1 Luque, Vanessa de A1 Jerez, José M A1 Alba, Emilio K1 Chemotherapy K1 EGFR inhibitors K1 Head and neck cancer K1 Human papillomavirus K1 Neoplasias de Cabeza y Cuello K1 Tomografía de Emisión de Positrones K1 Radioterapia K1 Inmunohistoquímica K1 Reacción en Cadena de la Polimerasa K1 Factor de Crecimiento Epidérmico K1 Radioisótopos K1 Radiofármacos AB BACKGROUNDHuman papillomavirus (HPV)-related head and neck cancer has been associated with an improved prognosis in patients treated with radiotherapy (RT) +/- chemotherapy (CT); however, RT combined with epidermal growth factor receptor (EGFR) inhibitors has not been fully studied in this group of patients.METHODSImmunohistochemical expression of p16 and PCR of HPV16 DNA were retrospectively analyzed in tumor blocks from 108 stage III/IV head and neck cancer patients treated with RT+CT (56) or RT+EGFR inhibitors (52). Disease-free survival (DFS) and overall survival (OS) were analyzed by the Kaplan-Meier method.RESULTSDNA of HPV16 was found in 12 of 108 tumors (11%) and p16 positivity in 18 tumors (17%), with similar rates in both arms of treatment. After a median follow-up time of 35 months (range 6-135), p16-positive patients treated with RT+EGFR inhibitors showed improved survival compared with those treated with RT+CT (2-year OS 88% vs. 60%, HR 0.18; 95% CI 0.04 to 0.88; p = 0.01; and 2-year DFS 75% vs. 47%, HR 0.17; 95% CI 0.03 to 0.8; p = 0.01). However, no differences were observed in p16-negative patients (2-year OS 56% vs. 53%, HR 0.97; 95% CI 0.55 to 1.7; p = 0.9; and 2-year DFS 43% vs. 45%, HR 0.99; 95% CI 0.57 to 1.7; p = 0.9).CONCLUSIONSThis is the first study to show that p16-positive patients may benefit more from RT+EGFR inhibitors than conventional RT+CT. These results are hypothesis-generating and should be confirmed in prospective trials. PB BioMed Central YR 2013 FD 2013-01-18 LK http://hdl.handle.net/10668/1144 UL http://hdl.handle.net/10668/1144 LA en NO Pajares B, Trigo JM, Toledo MD, Álvarez M, González-Hermoso C, Rueda A, et al. Differential outcome of concurrent radiotherapy plus epidermal growth factor receptor inhibitors versus radiotherapy plus cisplatin in patients with human papillomavirus-related head and neck cancer. BMC Cancer. 2013; 13(1):26 NO Journal Article; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 10, 2025