CXCL1 and Bartsocas-Papas syndrome 1: In patients with ulcerative IC/BPS, increased expression of chemokines, including CXCL1-, CXCL10-, and CXCR3-binding chemokines (CXCL9 to CXCL11), was found in bladder interstitium (Ogawa et al., 2010) and in the urine (Tyagi et al., 2012).