#$%^&*AU2010201713B220120510.pdf#####ABSTRACT The inventions include Apo2L/TRAIL formulations and methods of using such formulations. Lyophilized and crystal formulations of Apo-2L/TRAIL which are stable and have improved Apo2L/TRAIL trimer formation are provided. Methods of making Apo-2L/TRAIL formulations, as well as devices and kits containing such formulations are also provided.