Safety Analyses All safety analyses will be based on the safety analysis set. Specifically for safety, t-zero for all time measurements assumes the date of first GM-CSF administration (day -2 of the entire protocol schedule). SELLAS Life Sciences Group Galinpepimut -S Protocol : SLS17 -201/ MK3475 -770 Protocol v1.1 (Amendment 1.0) 12 April 2019 Page 215 7.6.4.1. Adverse Events Missing information regarding AEs will be imputed in a conservative manner.