In contrast, 10 biomarkers were differentially expressed between FXS patients and controls (p-value < 0.05, Additional file 3: Table S2): CCL2, CCL3, CCL4, CCL11, CCL13, CCL17, CCL22, CCL26, CXCL10 and IL-15. The gene discussed is CCL17; the disease is fragile X syndrome.