Drug discovery in the age of systems biology: the rise of computational approaches for data integration

► Open-access databases of chemicals and bioactivity data at molecular, cellular scale. ► Integrative computational methods for a systems level understanding of drug action. ► Multiple profile-based similarities from drugs and diseases for drug repositioning. ► Combining heterogeneous data to predict mechanism-based toxicity and side effects. ► Reconstruction of human molecular networks using drug perturbation experiments.