E.N.D.E.A.V.O.R.: An Exemestane Needed Dose Efficacy and Verification as an Ovulation Induction Regimen Study

Summary

The goal of this clinical trial is to learn if study drug exemestane will increase chances of ovulation for patients with polyendocrine metabolic ovarian syndrome (PMOS, formerly called polycystic ovary syndrome (PCOS)). It will also learn about side effects of study drug exemestane in this study population. The main questions it aims to answer are: Does exemestane lead to ovulation for patients with polyendocrine metabolic ovarian syndrome (PMOS- formerly called PCOS)? Researchers will compare exemestane to a placebo (a look-alike substance that contains no drug) to see if exemestane helps PMOS patients ovulate. Participants will: Take exemestane or a placebo every day for 5-10 days Visit the clinic three times for ultrasounds, labs, and to answer questions about side effects. If they become pregnant during this study, they will tell us how their pregnancy went after the study via a registry online.

Timeline

Start

2026-08

Primary completion

2028-12

Completion

2030-01

Publications

• Background Miller WR, Bartlett J, Brodie AM, Brueggemeier RW, di Salle E, Lonning PE, Llombart A, Maass N, Maudelonde T, Sasano H, Goss PE. Aromatase inhibitors: are there differences between steroidal and nonsteroidal aromatase inhibitors and do they matter? Oncologist. 2008 Aug;13(8):829-37. doi: 10.1634/theoncologist.2008-0055. Epub 2008 Aug 11.
• Background Geisler J. Differences between the non-steroidal aromatase inhibitors anastrozole and letrozole--of clinical importance? Br J Cancer. 2011 Mar 29;104(7):1059-66. doi: 10.1038/bjc.2011.58. Epub 2011 Mar 1.
• Background Legro RS, Brzyski RG, Diamond MP, Coutifaris C, Schlaff WD, Casson P, Christman GM, Huang H, Yan Q, Alvero R, Haisenleder DJ, Barnhart KT, Bates GW, Usadi R, Lucidi S, Baker V, Trussell JC, Krawetz SA, Snyder P, Ohl D, Santoro N, Eisenberg E, Zhang H; NICHD Reproductive Medicine Network. Letrozole versus clomiphene for infertility in the polycystic ovary syndrome. N Engl J Med. 2014 Jul 10;371(2):119-29. doi: 10.1056/NEJMoa1313517.
• Background Teede HJ, Misso ML, Costello MF, Dokras A, Laven J, Moran L, Piltonen T, Norman RJ; International PCOS Network. Recommendations from the international evidence-based guideline for the assessment and management of polycystic ovary syndrome. Fertil Steril. 2018 Aug;110(3):364-379. doi: 10.1016/j.fertnstert.2018.05.004. Epub 2018 Jul 19.
• Background Franik S, Kremer JA, Nelen WL, Farquhar C. Aromatase inhibitors for subfertile women with polycystic ovary syndrome. Cochrane Database Syst Rev. 2014 Feb 24;(2):CD010287. doi: 10.1002/14651858.CD010287.pub2.
• Background Balen A, Michelmore K. What is polycystic ovary syndrome? Are national views important? Hum Reprod. 2002 Sep;17(9):2219-27. doi: 10.1093/humrep/17.9.2219.
• Background Teede H, Deeks A, Moran L. Polycystic ovary syndrome: a complex condition with psychological, reproductive and metabolic manifestations that impacts on health across the lifespan. BMC Med. 2010 Jun 30;8:41. doi: 10.1186/1741-7015-8-41.
• Background Collee J, Mawet M, Tebache L, Nisolle M, Brichant G. Polycystic ovarian syndrome and infertility: overview and insights of the putative treatments. Gynecol Endocrinol. 2021 Oct;37(10):869-874. doi: 10.1080/09513590.2021.1958310. Epub 2021 Aug 2.
• Background Mejia RB, Summers KM, Kresowik JD, Van Voorhis BJ. A randomized controlled trial of combination letrozole and clomiphene citrate or letrozole alone for ovulation induction in women with polycystic ovary syndrome. Fertil Steril. 2019 Mar;111(3):571-578.e1. doi: 10.1016/j.fertnstert.2018.11.030. Epub 2019 Jan 22.

Drugs

Indications