Published in the Green Journal, this study reported the incidence of radiation-induced alopecia (RIA) in 264 patients with brain tumors treated with PT. The rates of any grade acute (≤90 days after PT completion), late (>90 days) and permanent RIA (persisting for> 12 months) were 61.8%, 24.7% and 14.4%, respectively. However, there are significant differences in the NTCP models of G2 RIA due to the cohorts utilized for model development and validation, a standardize and objective RIA scoring system is essential.