PTGER2 and adenoma: SSTR1 was highly upregulated in invasive adenoma (log2FC = 9.14, p = 0.005) as well as the adhesion receptor ADGRG2 (log2FC = 5.26, p = 0.026), the serotonin receptor HTR4 5 (log2FC = 3.68, p = 0.007) and the prostaglandin receptor PTGER2 (log2FC = 3.06, p = 0.038).