Only, in one study, overexpression of inhibitors of apoptosis proteins, including BIRC6, cIAP1, cIAP2, XIAP, Livin, and Survivin, was evaluated in 49 patients with ACC, and the results reported zero overexpression of BIRC6 in the studied cases [ 17]. The gene discussed is BIRC7; the disease is adrenal cortex carcinoma.