CXCL8 and Bartsocas-Papas syndrome 1: Additional studies examined the measurement of biomarkers related to IC/BPS, such as the levels of IL-6, IL-8, MCP-1, as well as many other markers, to differentiate IC/BPS patients from controls or those with other confusable bladder disorders [12,13,14,15,16,17,18,19].