When assessing IL-8 production based on gastrointestinal disease phenotype, we found no difference when comparing C. concisus isolates from CC 248 (64.1) pg/ml, LC 247.3 (61.9) pg/ml, UC 252.2 (71.2) pg/ml, CD 274.3 (73.6) pg/ml, HC 229.5 (59.1) pg/ml and D 245.1 (53.2) pg/ml, p = 0.3 (Fig. 1). The gene discussed is CXCL8; the disease is gastrointestinal disease.