In PC-12 cells originating from a rat pheochromocytoma, a miR-193 mimic inhibited ALDH expression and increased the levels of malondialdehyde and 4-hydroxynonenal, while a miR-193 inhibitor augmented ALDH expression and decreased the levels of these aldehydes [8]. The gene discussed is LDHA; the disease is pheochromocytoma.