CD24 and systemic lupus erythematosus: Exosomal RNAs from saliva, amniotic fluid, and urine were examined in the context of their use as a diagnostic marker for CD24 polymorphism (C→T; alanine to valine change) associated with a modulation in the progression of multiple sclerosis (MS), chronic hepatitis B, systemic lupus erythematosus (SLE), and giant-cell arthritis [120].