Given our observations supporting a “protective” role of the minor TT genotype of the BAFF rs9514828 polymorphism towards fatigue development, we then performed analysis of the five BAFF SNPs in an independent cohort of primary SS patients (Dutch cohort) and wished to explore whether there were associations between the BAFF SNPs and fatigue reported symptoms. Here, TNFSF13B is linked to synovial sarcoma.