An apparatus, device, methods, computer program product, and system are described that accept an input defining at least one medical condition; identify within one or more sets of study data at least one agent having a defined level of efficacy in treating the at least one medical condition; identify at least one subpopulation having a defined tolerance for at least one adverse event associated with administration of the at least one agent, the at least one subpopulation exhibiting at least some defined level of efficacy upon administration of the at least one agent to the subpopulation; and present the at least one agent in response to said identification of the at least one subpopulation.