IRCT20181224042091N2 IRCT 2019-06-03 Mashhad University of Medical Sciences Preserving fertility after chemotherapy Investigating the preservation of ovarian reserve by endocrine suppression in women undergoing chemotherapy at reproductive ages by (GNRH) gonadotrophin hormone releasing agonists. 2019-06-05 anticipated 60 Complete https://irct.ir/trial/39503 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: Using a randomized list of patients prepared by software, they are divided into two groups by simple randomization. 3 Preserving fertility following chemotherapy. Intervention 1: Intervention group: The GNRH intervention group is prescribed at least 2 weeks before starting treatment and every 28 days during treatment with a chemotherapy regimen. Intervention 2: Control group: Control group: In this group chemotherapy is given without prescribing GNRH or placebo. The patient receives chemotherapy alone. Yes - There is a plan to make this available What will be shared: General information of patients and the main outcome and analyzed data When: After completing sample size To whom: People working at university centers Conditions: In the case of access, they do not have any analysis and interpretation before the article is published Where to obtain: Email:mozahebz@mums.ac.ir How to obtain: After requesting and reasoning, the need for this information and how to use this information are available within 1 week, if available. Comments: