Comparative analysis of the biological effect of three compounds in atopic dermatitis using ReactomeGSA. The efficacy of Secukinumab, an IL17 inhibitor (GSE137430, transcriptomics) (17), Ustekinumab, an IL23/IL12 inhibitor (GSE140684, microarray) (18), and a JAK/SYK inhibitor (GSE133385, microarray) (19) was each compared with placebo. (A) Correlation analysis shows there is no shared biological effect between the drugs (example Secukinumab versus Ustekinumab). (B) As expected, only the JAK/SYK inhibitor led to a significant down-regulation of inflammatory pathways, consistent with the efficacy (and FDA approval) of only this class of the tested drugs in atopic dermatitis. (C) Comparison of different timepoints of a longitudinal study. The time series analysis of the JAK/SYK inhibitor effect shows earlier down-regulation of MHC signaling, followed by broad down-regulation of T-cell related inflammation.