TNFSF13B and Feingold syndrome: In an animal model study with normal lacrimal glands aimed at identifying precursor of Sjogren foci in histologically normal glands, the authors identified a cluster of transcripts associated with Sjogren’s foci composed of several mRNAs, chemokines, and cytokines (with prevailing BAFF), suggesting many molecular changes that occur before the histologic findings of FS can be detected [27].