BAI1 is primarily used in research settings to study its role in cellular processes, particularly in relation to apoptosis (programmed cell death) and phagocytosis (the engulfment of cells or particles). It is often investigated for its potential implications in cancer biology, as it may play a role in tumor suppression and immune system regulation. Additionally, BAI1 is explored in neuroscience for its involvement in brain development and synaptic functions. Its applications are largely experimental, focusing on understanding its mechanisms and potential therapeutic targets in diseases like cancer and neurological disorders.