scholarly journals Biomarker analysis of randomized controlled trial (RCT) of adjuvant chemotherapy (CT) using plasma EBV DNA to identify patients (pts) at higher risk of relapse after radiotherapy (RT) or chemoradiation (CRT) in nasopharyngeal cancer (NPC)

2017 ◽  
Vol 28 ◽  
pp. x100
Author(s):  
E.P. Hui ◽  
A.T.C. Chan ◽  
R.K.C. Ngan ◽  
S.Y. Tung ◽  
A.C.K. Cheng ◽  
...  
2018 ◽  
Vol 36 (31) ◽  
pp. 3091-3100 ◽  
Author(s):  
Anthony T.C. Chan ◽  
Edwin P. Hui ◽  
Roger K.C. Ngan ◽  
Stewart Y. Tung ◽  
Ashley C.K. Cheng ◽  
...  

Purpose The contribution of adjuvant chemotherapy after chemoradiation therapy (CRT) in nasopharyngeal cancer (NPC) remains controversial. Plasma Epstein-Barr virus (EBV) DNA is a potential biomarker of subclinical residual disease in NPC. In this prospective, multicenter, randomized controlled trial, we used plasma EBV DNA to identify patients with NPC at a higher risk of relapse for adjuvant chemotherapy. Patients and Methods Eligible patients with histologically confirmed NPC of Union for International Cancer Control stage IIB to IVB, adequate organ function, and no locoregional disease or distant metastasis were screened by plasma EBV DNA at 6 to 8 weeks after radiotherapy (RT). Patients with undetectable plasma EBV DNA underwent standard surveillance. Patients with detectable plasma EBV DNA were randomly assigned to either adjuvant chemotherapy with cisplatin and gemcitabine for six cycles (arm 1) or observation (arm 2). Patients were stratified for primary treatment (RT v CRT) and stage (II/III v IV). The primary end point was relapse-free survival (RFS). Results Seven hundred eighty-nine patients underwent EBV DNA screening. Plasma EBV DNA was undetectable in 573 (72.6%) and detectable in 216 (27.4%); 104 (13.2%) with detectable EBV DNA were randomly assigned to arms 1 (n = 52) and 2 (n = 52). After a median follow-up of 6.6 years, no significant difference was found in 5-year RFS rate between arms 1 and 2 (49.3% v 54.7%; P = .75; hazard ratio for relapse or death, 1.09; 95% CI, 0.63 to 1.89). The level of post-RT plasma EBV DNA correlated significantly with the hazards of locoregional failure, distant metastasis, and death. Conclusion In patients with NPC with detectable post-RT plasma EBV DNA, adjuvant chemotherapy with cisplatin and gemcitabine did not improve RFS. Post-RT plasma EBV DNA level should be incorporated as the selection factor in future clinical trials of adjuvant therapy in NPC.


2021 ◽  
Vol 104 (6) ◽  
pp. 887-894

Background: Cluster symptoms are a common occurrence in breast cancer patients undergoing chemotherapy. The telephone is a well-recognized, convenient device for reaching out to patients for monitoring and managing their symptoms in an efficient, prompt, and appropriate manner. Objective: To investigate the efficacy of telephone-based intervention to achieve energy conservation among breast cancer patients with the aim of alleviating fatigue, pain, sleep disturbance, and depression. Materials and Methods: The present study was a two-armed, randomized control trial conducted in the university hospital between March and September 2019. Seventy-four breast cancer patients, receiving four courses of adjuvant chemotherapy, were randomly recruited and assigned into the experimental group and the control group. One face-to-face intervention interview for energy conservation was conducted, followed by 20-minutes telephone brief counselling and assessment sessions, scheduled on day 1, 2, 7, and 14. Results: The scores for symptoms of median fatigue and pain in the experimental group were shown to be significantly reduced at the end of the study as compared to those scores within the control group (p<0.05). Similarly, scores for median sleep time and depression were greater at the end of cycle 1 and highest in cycle 2 (p<0.05, 0.001, respectively). Physical activity levels were also higher in the experimental group than in the control group in every cycle, with a statistical significance (p<0.001). Conclusion: The present study intervention demonstrated an effectiveness for the reduction of cluster symptoms. Further studies would be needed in a larger population scale in the customary, randomized controlled trial manner. Keywords: Cancer; Energy conservation; Fatigue; Pain; Sleep; Telephone


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