Nasopharyngeal carcinoma: Comparison of concomitant chemoradiotherapy with neoadjuvant chemotherapy in the caucasian population
16532 Background: Nowadays, concomitant chemoradiotherapy (CT-RT) is the standard treatment for nasopharyngeal carcinoma (NPC). Neoadyuvant chemotherapy (CT) has been investigated without definitive conclusions. The aim of this study is to compare results of patients(pts) treated with neoadyuvant CT with those treated with concurrent CT-RT. Methods: 38 pts with histologically proven NPC stage II-IVb (PS 0–2) were treated. 27 pts (71.1%) (Group A) (June 1994-May 2000) received Cisplatin (P) 100 mg/m2, Epirrubicin (E) 70 mg/m2, Bleomicin (B) 15 mg D1 and B 12 mg/m2 continous infusion (c.i) for 5 days every 3 week with sequential RT. The other 11 pts (28.9%) (Group B) (June 2002-August 2006) received P 100 mg/m2 D1, D22 and D43 concurrent with RT followed by adyuvant CT P 80 mg/m2 and 5-Fluorouracil 1,000mg/m2/d D1-D4 c.i every 28 day for 3 cycles. Results: 38 pts: 30 male(79%), 8 female(21%). Median age: 53(range 15–75). Stages:II:7, III:11, IVA:12, IVB:8(AJCC 2002). Histology:WHO I-II:11, WHO III:27. Overall response rate: Group A: 25/27 (92.5%), Group B: 10/11 (90.9%) p=0.65. Group A: CR: 17/27 (62.9%); PR: 8/27 (29.6%); PD: 1/27( 3.7%). Group B: CR: 8/11(72.7%); RP: 2/11 (18.1%). 1 pts of each group was not evaluated. Median overall survival (OS) was 34 months (m) in Group A and has not been reached in Group B. Estimated 3 years OS was 48% in GroupA and 80% in GroupB. Median progression free survival (PFS) was 42 m in Group A and 45 m in Group B p=0.72. Estimated 3 years PFS was 50.6% and 66.7% respectively. In the multivariate analysis concurrent CT-RT (HR=5.94 p=0.03) and stage (HR=0.17 p=0.01) were associated with OS. There was 2 toxic death in Group A. The most common toxicities was; Group A: bone marrow suppresion, nausea; Group B: mucositis. Conclusions: These data suggest that P based concomitant CT-RT improves OS and PFS compared with neoadyuvant CT (BEC) followed by RT. No significant financial relationships to disclose.