In silico analysis of transcript expression in colonic biopsies showed a 10‐fold increase in IL17A mRNA in samples from people with ulcerative colitis (UC), compared to noninflamed controls (NI) (p = 4.6 × 10−9, one‐way ANOVA with Benjamini‐Hochberg post hoc test; Figure 1A; data redrawn from (Higham et al. 2024)). Here, IL17A is linked to ulcerative colitis.