CXCL9 polymorphisms were found associated with Crohn disease, although only in pediatric patients.39,40 In addition, a recent study also identified a major role of MIG (CXCL9) in age-related chronic inflammation.41 Taken together, we did not find strong evidence supporting common inflammatory biomarkers affecting both risk of AD and inflammatory diseases. This evidence concerns the gene CXCL9 and Alzheimer disease.