EGR2 (Early Growth Response 2) is a transcription factor that plays an essential role in regulating the development of the nervous and immune systems. It is particularly important for the process of myelination in the peripheral nervous system and helps control cell growth and differentiation. Mutations in EGR2 are linked to Charcot-Marie-Tooth disease and related neuropathies, underscoring its key role in neural development and function.