ID4 and psoriasis: Among them, 10 genes including the inhibitor of DNA binding 4 (ID4), heparin binding protein 17 (HBP-17), keratin 16 (KRT16), S100A2, S100A9, S100A12, guanine nucleotide binding protein 15 (GNA15), MTX, PRKMK3, and SCYA2 were all found to be localized in the psoriasis susceptibility loci [37].