Reactome is pleased to announce a partnership with PharmGKB to curate pharmacokinetic / Drug ADME (absorption distribution metabolism excretion) pathways. Sharing knowledge and distributing curation effort will increase the efficiency and consistency with which both resources are able to integrate pathway data. The cross-references between co-curated pathways in Reactome and PharmGKB will support seamless navigation between the two resources enabling users to understand, visualize, and analyze their data in contexts that are best suited to their research interests. The collaborative pathways released in Reactome Version 82 are Prednisone ADME (found here at PharmGKB), and Ribavirin ADME (found here at PharmGKB).