Systems medicine approach employed by CoVex. CoVex integrates experimentally validated data about interaction between SARS-CoV-2 proteins (star nodes) with a human PPI network (round nodes) and known drug–target interactions (square nodes). Interactions between SARS-CoV-2 and human proteins are obtained from Gordon et al.,5 the human PPI network is taken from IID,11 and the drug–host links are obtained from ChEMBL,12 DrugBank,13 DrugCentral,14 Therapeutic Target Database,15 Guide to Pharmacology,16 PharmGKB,17 and BindingDB.18 PPI, protein–protein interaction.