Steroidogenic pathways related to the production of aldosterone, cortisol and hybrid adrenal steroids. ZG, zona glomerulosa; ZF, zona fasciculata; StAR, steroidogenic acute regulatory protein; CYP11A1, cholesterol side-chain cleavage; CYP17A1, 17α-hydroxylase; HSD3B2, 3β-hydroxysteroid dehydrogenase type 2; CYP21A2, 21-hydroxylase; CYP11B1, 11β-hydroxylase; CYP11B2, aldosterone synthase; 17OH-Prog, 17-hydroxyprogesterone; 18OH-Cortisol, 18-hydroxycortisol; APCC, aldosterone-producing cell clusters; APA, aldosterone-producing adenoma; mKCNJ5, mutant KCNJ5