Strong immunostaining of OGR1 was observed in all specimens studied (Figure 3A–D and Figure S5A), with a stronger OGR1 staining in samples from IBD patients (n = 5 CD patients, n = 5 UC patients, Figure 3A,B) compared with samples from non-IBD subjects (n = 5) (Figure 3C,D). This evidence concerns the gene GPR68 and inflammatory bowel disease.