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Publication Detail
Treatment options for resectable hypopharyngeal squamous cell carcinoma: A systematic review and meta-analysis of randomized controlled trials
  • Publication Type:
    Journal article
  • Authors:
    Panda S, Sakthivel P, Gurusamy KS, Sharma A, Thakar A
  • Publisher:
    Public Library of Science (PLoS)
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  • Country:
    United States
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  • Keywords:
    Radiation therapy, Cancer chemotherapy, Cancer treatment, Head and neck cancers, Larynx, Chemoradiotherapy, Surgical oncology, Metaanalysis
  • Notes:
    Copyright: © 2022 Panda et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
BACKGROUND: There is uncertainty in the treatment options for resectable hypopharyngeal squamous cell carcinoma. METHODS: A systematic review of randomised controlled trials (RCTs) was performed. Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library), MEDLINE, EMBASE, Science Citation Index, and Conference Proceedings databases and trial registries were searched until November 2020 for randomized controlled trials performed on resectable hypopharyngeal squamous cell carcinoma. Two systematic review authors independently identified studies and extracted data. The primary outcomes evaluated were overall survival, disease-free survival, any recurrence, local recurrence, loco-regional recurrence, distal recurrence and laryngectomy-free survival. The secondary outcomes were response rates following neoadjuvant treatment and comparison of treatment-related toxicity. Assessment of risk of bias was performed for the selected studies using Cochrane's tool for assessing risk of bias. The studies were evaluated for the quality of evidence using GRADE (Grading of Recommendations, Assessment, Development and Evaluations). Risk ratios (RR), rate ratios, and hazard ratios (HR) were calculated along with 95% confidence intervals (95% CI). The Meta-analysis was performed using a random-effects model. RESULTS: Five RCTs met the inclusion criteria for this review. The risk of bias was unclear or high for the trials. Non-organ preservation(n = 140) versus organ preservation (n = 144) (two trials): no statistically significant difference could be identified for any of the primary outcomes. Concurrent chemoradiotherapy (n = 37) versus sequential chemotherapy followed by radiotherapy (n = 34) (one trial): no statistically significant difference was noted between the two treatment arms for overall survival, disease-free survival and loco-regional recurrence. Laryngectomy-free survival was found to be superior in concurrent chemoradiotherapy arm (HR:0.28, 95% CI 0.13, 0.57). Induction chemotherapy followed by concurrent chemoradiotherapy (n = 53) versus induction chemotherapy followed by radiotherapy (n = 60) (one trial): no statistically significant difference was noted between the treatment arms for overall survival, disease-free survival and laryngectomy-free survival. Preoperative radiotherapy (n = 24) versus postoperative radiotherapy (n = 23) (one trial): overall survival was found to be better in the postoperative radiotherapy arm (HR:2.44, 95% CI1.18, 5.03). No statistically significant difference was noted in terms of treatment-related toxicity. CONCLUSIONS: There are considerable uncertainties in the management of resectable hypopharyngeal cancer. TRAIL REGISTRATION: PROSPERO registration: CRD42019155613.
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