Topics with new or revised events include Immune system (STING mediated induction of type 1 IFN and DAP12 Interactions and signaling), Disease (Mucopolysaccharidoses and Signaling by PI3K/AKT in Cancer), Cell Cycle (Golgi Cisternae Pericentriolar Stack Reorganization), Metabolism (Regulation of Cholesterol Biosynthesis by SREBP), Metabolism of proteins (Metabolism of Angiotensinogen to Angiotensins), Membrane Trafficking (GLUT4 Translocation), and Gene expression. S Alves, JL Ashworth, A Colanzi, MF Coutinho, L Jin, J Joseph, A Klip, LL Lanier, G Liang, F Rauscher, L Thorpe, Y Wang, H Yuzugullu, and J Zhao are our external reviewers. New pathway illustrations for this release include Signal transduction , Signaling by Hippo, Signaling by SCF-KIT, and Mitochondrial Protein Import. Reactome is hosting two webinars, Using Reactome Pathway Database and Reactome Functional Interaction Network plugin in October. If you are interesting in participating, please register at Eventbrite. A new paper entitled Reactome – a curated knowledgebase of biological pathways: megakaryocytes and platelets has been published in the Journal of Thrombosis and Haemostasis.