The CSPG/HSPG serglycin (SRGN), hyaluronan receptor CD44 and insulin‐like growth factor‐binding protein 3 (IGFBP3) were among the most consistently downregulated genes associated with both mild and severe cognitive impairment in subjects with SZ (Figure 7 and Tables S2 and S3). Here, IGFBP3 is linked to Cognitive impairment.