IL4 and Alzheimer disease: The correlations between IL-4, IL-6, IL-10, TNF-α, TNF-β, CCL-2, and the scores of listening comprehension, reading, and naming were analyzed in the AD group, but with no significant correlation between the serum levels of IL-4, IL-6, IL-10, CCL-2, TNF-α, and TNF-β and the scores of listening comprehension, reading, and naming.