NCF4 (Neutrophil Cytosolic Factor 4): NCF4, part of the NADPH oxidase complex, is crucial for the immune defense against pathogens. It regulates the assembly and activation of the NADPH oxidase complex, which produces reactive oxygen species (ROS) as part of the oxidative burst in phagocytes. This process is vital for killing engulfed pathogens. Mutations in NCF4 can lead to immunodeficiencies, characterized by increased susceptibility to infections, highlighting its role in innate immunity and host defense....