ADIPOQ and Alzheimer disease: In our sample of AD patients, elevated levels of serum adiponectin were strongly correlated with Actinobacteria, Acidomicrobiia at the class level, Prevotella, Faecalibacterium, and Christensenellaceae R-7 at the genus level, and Oscillospiraceae at the family level; however, further studies are needed to investigate if this correlation is a result of a causal relationship.