Clinical trial · Interventional
Safety of Ovarian Stimulation With Letrozole and Gonadotropins in Breast Cancer Patients
Safety of Ovarian Stimulation With Letrozole and Gonadotropins in Breast Cancer Patients Undergoing Embryo or Oocyte Cryopreservation: A Prospective Controlled Follow up Study
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Why stopped (as posted): The PI left the Institution.
Summary
Brief summary (as posted)
Breast cancer patients are commonly treated with drugs that eggs present in the ovary and may reduce their chance for getting pregnant. Their fertility can be preserved by stimulating their ovaries, collecting multiple eggs, fertilize them in the lab and freeze them. Ovarian stimulation increase their estrogen levels in blood.this may stimulate their cancer and increase chance for recurrence. If a medicine that prevent estrogen rise is used (letrozole), this may increase the safety of stimulation. In this study we compared ovarian stimulation in breast cancer patients using letrozole with those who did not undergo stimulation and showed that there is no increase risk for recurrence after a median follow up of 2 years
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Breast Cancer | Malignant Breast Neoplasm | CURATED_EXACT | 0.92 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Ovarian stimulation in vitro fertilization cryopreservation | Procedure | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- letrozole
- description
- ovarian stimulation after breast cancer diagnosis and before breast cancer treatment
- interventionNames
- Procedure: Ovarian stimulation in vitro fertilization cryopreservation
- type
- NO_INTERVENTION
- label
- control
- description
- No ovarian stimulation before breast cancer treatment
Primary outcomes (1)
- measure
- Breast cancer relapse free survival after ovarian stimulation
- timeFrame
- after chemotherapy to end of follow up
Secondary outcomes (1)
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 18 Years
- Maximum age
- 45 Years
Show eligibility criteria text
Inclusion Criteria: * Age 18-45 years * Biopsy proven breast cancer * No prior chemotherapy or oophorectomy * Regular menstrual cycles * Normal basal FSH and estradiol Exclusion Criteria: * Stage 4 breast cancer
References
Publications (3)
- DERIVEDOktay K, Turan V, Bedoschi G, Pacheco FS, Moy F. Fertility Preservation Success Subsequent to Concurrent Aromatase Inhibitor Treatment and Ovarian Stimulation in Women With Breast Cancer. J Clin Oncol. 2015 Aug 1;33(22):2424-9. doi: 10.1200/JCO.2014.59.3723. Epub 2015 Jun 22. PMID 26101247
- DERIVEDReddy J, Turan V, Bedoschi G, Moy F, Oktay K. Triggering final oocyte maturation with gonadotropin-releasing hormone agonist (GnRHa) versus human chorionic gonadotropin (hCG) in breast cancer patients undergoing fertility preservation: an extended experience. J Assist Reprod Genet. 2014 Jul;31(7):927-32. doi: 10.1007/s10815-014-0248-6. Epub 2014 May 23. PMID 24854484
- DERIVEDAzim AA, Costantini-Ferrando M, Oktay K. Safety of fertility preservation by ovarian stimulation with letrozole and gonadotropins in patients with breast cancer: a prospective controlled study. J Clin Oncol. 2008 Jun 1;26(16):2630-5. doi: 10.1200/JCO.2007.14.8700. PMID 18509175