Among them, organogold(III) complexes with diamine ligands AuBiPy, AuXil and AuPy (68–70, Figure 4) were demonstrated to be inhibitors of isolated TrxR2 at low- or sub-micromolar doses (IC50 values of 0.28, 0.21 and 1.42 μM, respectively), and this inhibition was related to their cytotoxicity towards human cancer cells [54,55]. The gene discussed is TXNRD2; the disease is cancer.