IL17A and psoriasis: However, several other molecules, for example, microRNA‐210 (Wu et al, 2018) and IκBζ (Bambouskova et al, 2018), IL‐25 (Xu et al, 2018), Card14 (Wang et al, 2018), and NF‐κB (Yan et al, 2015) have been identified as positive regulators of psoriasis by regulating various processes, including Th17 cell differentiation, IL‐17‐driven inflammation, and the proliferation of keratinocytes (Bambouskova et al, 2018, 3; Wang et al, 2018, 14; Wu et al, 2018; Xu et al, 2018; Yan et al, 2015).