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chemoradiotherapy (CCRT). The primary endpoint was progression-free survival (PFS).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>A total of 229 patients were documented in the oral administration group (127 patients received capecitabine and 102 received S-1), whereas 241 patients were recorded in the intravenous group (164 patients received the PF regimen and 77 received the GP regimen). There was no significant difference in PFS between the intravenous and oral groups (n=154\u2009each) after propensity score matching (3-year PFS rate: 76.3% vs 73.9%; HR, 0.803; 95% CI 0.523 to 1.233, p=0.316). However, based on the overall cohort, the GP regimen showed a superior 3-year PFS rate (89.1%) compared with PF (74.6%), capecitabine (76.0%) and S-1 (74.3%) regimen (p=0.005, 0.012 and 0.003, respectively), while multivariable analyses also demonstrated that the GP regimen (HR<jats:sub>PFS<\/jats:sub>, 0.38; 95%\u2009CI 0.18 to 0.81, p=0.012) was associated with better survival. Additionally, the intravenous group, which included PF and GP, exhibited a higher incidence of grade\u22653 leucocytopenia (50.0% vs 22.7%), neutropenia (30.5% vs 18.2%), anaemia (16.2% vs 3.9%), hyponatraemia (3.2% vs 0) and hypokalaemia (12.3% vs 4.5%) than the oral group.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>For patients treated with upfront CCRT, AC should be considered, and intravenous GP is preferred, although patients should be counselled about an increased risk of haematological toxicities. For patients treated with induction chemotherapy and CCRT, oral chemotherapy, either with capecitabine or S-1, was efficacious and tolerable.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/bmjonc-2024-000718","type":"journal-article","created":{"date-parts":[[2025,7,22]],"date-time":"2025-07-22T07:40:11Z","timestamp":1753170011000},"page":"e000718","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Real-world experience on efficacy and safety of different adjuvant chemotherapy regimens in locoregionally advanced nasopharyngeal carcinoma"],"prefix":"10.1136","volume":"4","author":[{"given":"Jie","family":"Chen","sequence":"first","affiliation":[{"name":"State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University 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