– TNFSF13B is also known as B-cell activating factor (BAFF), BLyS and TNLG7A, is a member of TNF ligand superfamily. TNFSF/TNFRSF members function as key molecules in local and systemic inflammatory network, and the plasma TNFSF13B and TNFSF14 may be the potential local and systemic inflammatory indicators of severe HAdV pneumonia in pediatric patients. Identification of TNFSF13B as candidate causative genes supports conjectures on involvement of the immune system in BVVL and amyotrophic lateral sclerosis. It’s reported that APRIL, BAFF, and BAFF receptors play a major role in the pathogenesis of RA, and MSCT seems to inhibit these immunological factors.