Fig. 2

Survival distributions stratified by change in Child−Turcotte−Pugh (CTP) score and plasma hepatocyte growth factor (HGF) in liver cancer patients undergoing hypofractionated radiation therapy with protons. a, b Overall survival (OS) is significantly and inversely associated with worsening in CTP score by at least 1 point within 3 months a and 6 months b. c OS is significantly and inversely associated with pretreatment plasma HGF level