REN and colorectal cancer: The top 5 significant pathways identified by this analysis were: Aldosterone-regulated sodium reabsorption (renin-angiotensin-aldosterone system in the adrenal cortex), EGFR tyrosine kinase inhibitor resistance (acquisition of resistance in non-small-cell lung cancer), TGF-beta signaling pathway (cell growth, differentiation and apoptosis), Relaxin signaling pathway (hormone released in the birth canal before delivery) and colorectal cancer.