IFNG transcripts were mostly expressed in lesional LP (median/section:4), IL13 (median/section:1.5) and IL17A (median/section:9) in AD and psoriasis, respectively, (Fig. 2n–p, Supplementary Fig. 3b) with an emphasized expression in upper skin layers (Fig. 3a, b, Supplementary Fig. 3a, c). Here, IFNG is linked to Alzheimer disease.