Rohit G Ganju1, Ryan Morse1, Andrew Hoover1, Mindi TenNapel1, Christopher E Lominska2. 1. Department of Radiation Oncology, University of Kansas Medical Center, United States. 2. Department of Radiation Oncology, University of Kansas Medical Center, United States. Electronic address: clominska@kumc.edu.
Abstract
BACKGROUND AND PURPOSE: Sarcopenia is a predictor of poor prognosis in cancer patients. One potential mechanism for worse outcomes in sarcopenic patients is worse tolerance to treatment; this has not been investigated with regard to radiation treatment. We reviewed our institutional experience of head and neck cancer patients receiving concurrent chemoradiation and assessed outcomes with respect to sarcopenia. MATERIALS AND METHODS: Patients treated between 2012 and 2016 were reviewed. Sarcopenia was assessed from radiation planning computed tomography (CT) scans using muscles at the C3 vertebral body using previously published methods. Survival was calculated using the Kaplan-Meier method. Association between patient factors and outcome was calculated in univariate and multivariate analyses. RESULTS: Two hundred and forty-six patients were included. Fifty-eight percent met criteria for sarcopenia. Thirty-seven percent experienced chemotherapy delays of >1 week and 14% had radiation treatment breaks >1 week. On multivariate analysis, concurrent smoking (HR 3.85, p < 0.01) and sarcopenia (HR 2.15, p = 0.01) were associated with chemotherapy toxicity and age >65 years (HR 2.94, p < 0.01) and sarcopenia (HR 2.99, p = 0.04) were associated with prolonged radiation breaks. Sarcopenia was associated with worse overall survival (HR 1.83, p = 0.03) and progression-free survival (HR 1.65, p = 0.03) in the overall cohort. When analyzed separately, sarcopenia was not associated with outcomes in p16-positive oropharynx cancers. CONCLUSION: Sarcopenic patients receiving concurrent chemoradiation are more likely to require radiation treatment breaks and suffer chemotherapy toxicity than their non-sarcopenic counterparts. This may contribute to worse survival outcomes in head and neck cancer, with the exception of p16-positive oropharyngeal cancer.
BACKGROUND AND PURPOSE:Sarcopenia is a predictor of poor prognosis in cancerpatients. One potential mechanism for worse outcomes in sarcopenic patients is worse tolerance to treatment; this has not been investigated with regard to radiation treatment. We reviewed our institutional experience of head and neck cancerpatients receiving concurrent chemoradiation and assessed outcomes with respect to sarcopenia. MATERIALS AND METHODS:Patients treated between 2012 and 2016 were reviewed. Sarcopenia was assessed from radiation planning computed tomography (CT) scans using muscles at the C3 vertebral body using previously published methods. Survival was calculated using the Kaplan-Meier method. Association between patient factors and outcome was calculated in univariate and multivariate analyses. RESULTS: Two hundred and forty-six patients were included. Fifty-eight percent met criteria for sarcopenia. Thirty-seven percent experienced chemotherapy delays of >1 week and 14% had radiation treatment breaks >1 week. On multivariate analysis, concurrent smoking (HR 3.85, p < 0.01) and sarcopenia (HR 2.15, p = 0.01) were associated with chemotherapy toxicity and age >65 years (HR 2.94, p < 0.01) and sarcopenia (HR 2.99, p = 0.04) were associated with prolonged radiation breaks. Sarcopenia was associated with worse overall survival (HR 1.83, p = 0.03) and progression-free survival (HR 1.65, p = 0.03) in the overall cohort. When analyzed separately, sarcopenia was not associated with outcomes in p16-positive oropharynx cancers. CONCLUSION: Sarcopenic patients receiving concurrent chemoradiation are more likely to require radiation treatment breaks and suffer chemotherapy toxicity than their non-sarcopenic counterparts. This may contribute to worse survival outcomes in head and neck cancer, with the exception of p16-positive oropharyngeal cancer.
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