TY - JOUR T1 - A multi-institutional retrospective study of hyperthermic plus intravesical chemotherapy versus intravesical chemotherapy treatment alone in intermediate and high risk nonmuscle-invasive bladder cancer JF - Cancer Biology and Medicine JO - Cancer Biol Med SP - 308 LP - 317 DO - 10.20892/j.issn.2095-3941.2020.0125 VL - 18 IS - 1 AU - Qiang Ruan AU - Degang Ding AU - Bin Wang AU - Chaohong He AU - Xuequn Ren AU - Zhenhua Feng AU - Zhigang Pang AU - Jin Wang AU - Xiangliang Zhang AU - Hongsheng Tang AU - Jiahong Wang AU - Qingjun He AU - Ziying Lei AU - Quanxing Liao AU - Jiali Luo AU - Shuzhong Cui Y1 - 2021/02/01 UR - http://www.cancerbiomed.org/content/18/1/308.abstract N2 - Objective: To compare the efficacy and safety of hyperthermic intravesical chemotherapy (HIVEC) and intravesical chemotherapy (IVEC) in patients with intermediate and high risk nonmuscle-invasive bladder cancer (NMIBC) after transurethral resection.Methods: We included 560 patients diagnosed with primary or recurrent NMIBC between April 2009 and December 2015 at 1 of 6 tertiary centers. We matched 364 intermediate or high risk cases and divided them into 2 groups: the HIVEC+IVEC group [chemohyperthermia (CHT) composed of 3 consecutive sessions followed by intravesical instillation without hyperthermia] and the IVEC group (intravesical instillation without hyperthermia). The data were recorded in the database. The primary endpoint was 2-year recurrence-free survival (RFS) in all NMIBC patients (n = 364), whereas the secondary endpoints were the assessment of radical cystectomy (RC) and 5-year overall survival (OS).Results: There was a significant difference in the 2-year RFS between the two groups in all patients (n = 364; HIVEC+IVEC: 82.42% vs. IVEC: 74.18%, P = 0.038). Compared with the IVEC group, the HIVEC+IVEC group had a lower incidence of RC (P = 0.0274). However, the 5-year OS was the same between the 2 groups (P = 0.1434). Adverse events (AEs) occurred in 32.7% of all patients, but none of the events was serious (grades 3–4). No difference in the incidence or severity of AEs between each treatment modality was observed.Conclusions: This retrospective study showed that HIVEC+IVEC had a higher 2-year RFS and a lower incidence of RC than IVEC therapy in intermediate and high risk NMIBC patients. Both treatments were well-tolerated in a similar manner. ER -