The response rate of most anti-cancer drugs is limited because of the high heterogeneity of cancer and the complex mechanism of drug action.Personalized treatment that stratifies patients into subgroups using molecular biomarkers is promising to improve clinical benefit.With the accumulation of preclinical models and advances in computational approaches of drug response prediction,pharmacogenomics has made great success over the last 20 years and is increasingly used in the clinical practice of personalized cancer medicine.In this article,we first summarize FDA-approved pharmacogenomic biomarkers and large-scale pharmacogenomic studies of preclinical cancer models such as patient-derived cell lines,organoids,and xenografts.Furthermore,we comprehensively review the recent developments of computational methods in drug response prediction,covering network,machine learning,and deep learning technologies and strategies to evaluate immunotherapy response.In the end,we discuss challenges and propose possible solutions for further improvement.