The present invention relates to a method of identifying an agent that modulates the function of an apoptosis-associated polypeptide having a sequence as set out in Table 1, the method comprising: (a) providing a sample containing an apoptosis-associated polypeptide having a sequence as set out in Table 1, and a candidate agent and incubating under conditions to permit binding of the candidate agent to the polypeptide; (b) measuring the binding of the apoptosis-associated polypeptide having a sequence as set out in Table 1 to the candidate agent in the sample; and (c) comparing the binding of the apoptosis-associated polypeptide having a sequence as set out in Table 1 to the candidate agent in the sample with the binding of the polypeptide having a sequence as set out in Table 1 to a control agent, wherein the control agent is known to not bind to the polypeptide having a sequence as set out in Table 1; wherein an increase in the binding of the apoptosis-associated polypeptide having a sequence as set out in Table 1 to the candidate agent in the sample relative to the binding of the apoptosis-associated polypeptide having a sequence as set out in Table 1 to the control agent indicates that the candidate agent modulates the function of the apoptosis-associated polypeptide having a sequence as set out in Table 1.