Isoform switching refers to the process by which alternative splice forms of a gene are selectively expressed or repressed in response to various stimuli or conditions. These alternative splice forms, or isoforms, can have different functions or properties, which can lead to changes in cellular behavior or response to environmental cues. Understanding isoform switching is important for studying gene regulation, cell signaling pathways, and disease mechanisms. Researchers often use techniques such as RNA sequencing and transcriptomic analysis to identify and study isoform switching in various biological contexts.