To investigate the candidate drugs for different subtypes of psoriasis, Connectivity Map analysis was performed (https://clue.io/). The Connectivity Map is a pharmacogenome-based tool, which is conducted to explore the potential candidates targeting immunophenotype-related biological pathways and genes as well as understanding the potential MoAs of drugs [17 ]. To be specific, 300 genes containing top 150 up-regulated genes and top 150 down-regulated genes were obtained from difference analysis between C1 and C2 subtypes of psoriasis. Then, these 300 genes were used in the analysis of Connectivity Map.
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