GSK840 is primarily used in research settings to study its effects on inflammatory diseases. It functions as an inhibitor of RIP2 kinase, which plays a crucial role in signaling pathways related to inflammation and immune responses. By blocking this kinase, GSK840 helps researchers understand the mechanisms behind conditions like Crohn's disease, rheumatoid arthritis, and other inflammatory disorders. Its application extends to preclinical studies aimed at developing targeted therapies for these diseases. Additionally, GSK840 is utilized in cellular and molecular biology experiments to explore the broader implications of RIP2 inhibition in immune regulation and disease progression.