TJP1 and systemic mastocytosis: Remarkably, Ngai and colleagues (16) recently published a similar study that complements, validates, and further expands the findings of Sarangam et al. The biomarkers I-FABP, LBP, and sCD14 (in addition to zonula occludens-1 [ZO-1], another marker of intestinal injury) were studied in a different cohort of 523 Ugandan children hospitalized with SM.