Role of the ATP7A Transporter in Ovarian Cancer

Summary

Ovarian cancer has the highest mortality rate among all gynecologic cancers, with most patients presenting with advanced stage tumors. About a third of patients do not respond to primary platinum-based chemotherapy treatment, and over time up to 80 % of others develop chemoresistance, rendering recurrent disease incurable. Despite all the studies published in the literature, it has not been proven that the number of cells with expressed ATP7A in certain tumors increases independently of the therapy. In addition, no study has been conducted on a sample of patients with confirmed serous histology of ovarian cancer only. The aim of the study is to demonstrate increased expression of the ATP7A transporter in cells resistant to carboplatin.

Timeline

Start

2021-03-17

Primary completion

2023-05-01

Completion

2024-01-01

Publications

• Background Lukanovic D, Herzog M, Kobal B, Cerne K. The contribution of copper efflux transporters ATP7A and ATP7B to chemoresistance and personalized medicine in ovarian cancer. Biomed Pharmacother. 2020 Sep;129:110401. doi: 10.1016/j.biopha.2020.110401. Epub 2020 Jun 20.
• Background Colombo N, Sessa C, du Bois A, Ledermann J, McCluggage WG, McNeish I, Morice P, Pignata S, Ray-Coquard I, Vergote I, Baert T, Belaroussi I, Dashora A, Olbrecht S, Planchamp F, Querleu D; ESMO-ESGO Ovarian Cancer Consensus Conference Working Group. ESMO-ESGO consensus conference recommendations on ovarian cancer: pathology and molecular biology, early and advanced stages, borderline tumours and recurrent diseasedagger. Ann Oncol. 2019 May 1;30(5):672-705. doi: 10.1093/annonc/mdz062.
• Background Samimi G, Safaei R, Katano K, Holzer AK, Rochdi M, Tomioka M, Goodman M, Howell SB. Increased expression of the copper efflux transporter ATP7A mediates resistance to cisplatin, carboplatin, and oxaliplatin in ovarian cancer cells. Clin Cancer Res. 2004 Jul 15;10(14):4661-9. doi: 10.1158/1078-0432.CCR-04-0137.
• Background Samimi G, Varki NM, Wilczynski S, Safaei R, Alberts DS, Howell SB. Increase in expression of the copper transporter ATP7A during platinum drug-based treatment is associated with poor survival in ovarian cancer patients. Clin Cancer Res. 2003 Dec 1;9(16 Pt 1):5853-9.
• Background Lukanović D, Kobal B, Černe K. Ovarian Cancer: Treatment and Resistance to Pharmacotherapy. Reproductive Medicine. 2022; 3(2):127-140. https://doi.org/10.3390/reprodmed3020011

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