Specifically, Ligilactobacillus and Anaeroplasma are positively correlated with various psoriasis-related factors such as IL-6, IL-17A, IL-22, and IL-23, while Rikenella, Alistipes, and Mucispirillum are negatively correlated with them (Cai et al., 2023). This evidence concerns the gene IL22 and psoriasis.