LYST (Lysosomal Trafficking Regulator): LYST is a key regulator of lysosomal trafficking, critical for the proper function of lysosomes in cellular digestion and waste management. Mutations in the LYST gene cause Chediak-Higashi syndrome, a rare immunodeficiency disorder characterized by abnormal lysosome formation, leading to defective immune responses and increased susceptibility to infections. LYST's role in regulating lysosomal function highlights its importance in cellular homeostasis and the immune system's effectiveness....