GSK-LSD1 2HCl is primarily used in research settings to study the role of LSD1 (lysine-specific demethylase 1) in various biological processes. It is a potent inhibitor of LSD1, an enzyme involved in the regulation of gene expression by modifying histone proteins. Researchers utilize this compound to investigate its potential in cancer therapy, as LSD1 is often overexpressed in certain cancers and contributes to tumor growth and progression. By inhibiting LSD1, GSK-LSD1 2HCl helps in understanding its role in cancer cell differentiation and proliferation. Additionally, it is used to explore epigenetic mechanisms and their impact on diseases, providing insights into the development of targeted therapies. The compound is also valuable in studying neurological disorders and other conditions where epigenetic regulation plays a critical role.