“…Despite the limited size of our sample, sarcopenic and non-sarcopenic patients responded to RT in a similar way, and no significant correlations emerged between SMI and OS, CSS, 90-day mortality and RTtoxicity. In addition, patients' comorbidities expressed according to the CCI score did not influence the OS outcomes though presenting a significant correlation with the experienced toxicity level, in agreement with the results of Santacaterina et al and in contradiction with the studies by Mayr et al and Boorjian et al (4,19,27). Conversely, as only a small number of patients underwent chemotherapy with different regimens in terms of way of administration, time of delivery and pharmacological agents chosen, it is not possible to state how and how much its addition to RT influenced our outcomes.…”