Abstract
Human cancer tissue-derived organoids maintain the mutational spectrum and histological characteristics of their parental tumors and thus provide a platform for predicting patients' responses to anticancer drugs. Here, we provide a fully detailed, step-by-step protocol to derive lung adenocarcinoma organoids from primary tumor tissues. Organoid lines can be generated with a success rate of 80% using our protocol. For complete details on the use and execution of this protocol, please refer to Li et al. (2020).