RT Journal Article SR Electronic T1 Synthesizing Combination Therapies for Evolutionary Dynamics of Disease for Nonlinear Pharmacodynamics JF bioRxiv FD Cold Spring Harbor Laboratory SP 009480 DO 10.1101/009480 A1 Jonsson, Vanessa A1 Matni, Nikolai A1 Murray, Richard M. YR 2014 UL http://biorxiv.org/content/early/2014/09/21/009480.abstract AB Our previous results proposed an iterative scalable algorithm for the systematic design of sparse, small gain feedback strategies that stabilize the evolutionary dynamics of a generic disease model with linear pharmacodynamics. In this manuscript, we use piecewise linear approximations to model nonlinear drug effects. We leverage results from optimal controller synthesis for positive systems to formulate the feedback synthesis problem as an optimization problem that sequentially explores piecewise linear subsystems corresponding to higher and higher treatment dosages.