Cyclopenol was reported to inhibit human bladder cancer cell line BIU-87 (IC50 of 8.34 μM) [57] and was also shown to inhibit protein-tyrosine phosphatase 1B (PTP1B) in a dose-dependent manner with an IC50 value of 30 μM [58]. The gene discussed is PTPN1; the disease is urinary bladder carcinoma.