This study is a prospective, multicenter, randomized controlled clinical trial planned to enroll 64 female hematologic patients aged 14 to 50 years scheduled for autologous hematopoietic stem cell transplantation (auto-HSCT). Participants will be divided into two groups based on the use of myeloablative conditioning: the myeloablative conditioning (MAC) group and the non-MAC conditioning group. The conditioning regimen for autologous hematopoietic stem cell transplantation primarily employs melphalan. A melphalan dose >140 mg/m² constitutes myeloablative conditioning (MAC), while a dose ≤140 mg/m² is classified as non-myeloablative conditioning. Within each group, patients were randomly assigned 1:1 to the experimental group (goserelin prophylaxis) or control group using a random number table. The experimental group received a single 3.6mg subcutaneous injection of goserelin 1-3 days prior to conditioning, in addition to the standard transplantation regimen. The control group did not receive goserelin prophylaxis. The primary endpoint was menstrual recovery rate at 6 months post-transplantation (defined as ≥3 naturally occurring menstrual cycles without intervention by menstrual-regulating drugs). Secondary endpoints included: incidence of premature ovarian insufficiency (POI); ovarian reserve function markers: anti-Müllerian hormone (AMH), follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2) levels; Other reproductive parameters: ovarian and uterine volume, endometrial thickness; time to neutrophil/platelet engraftment; disease recurrence rate; transplant-related mortality; and adverse event (AE) incidence. This study aims to evaluate the efficacy of goserelin in improving ovarian function following autologous hematopoietic stem cell transplantation in hematologic malignancy patients.

Inclusion Criteria:

1. Haematological patients scheduled for autologous haematopoietic stem cell transplantation; 2. Female patients aged 14 to 50 years with regular menstrual cycles prior to transplantation; 3. Patients or their legal representatives must voluntarily participate and sign an informed consent form, demonstrating comprehension and willingness to comply with all study procedures and requirements; 4. Estimated survival exceeding one year to ensure sufficient time for monitoring menstrual recovery.

Exclusion Criteria:

1. Patients with severe dysfunction of vital organs such as the heart, liver, or kidneys, which may compromise study outcomes or increase patient risk; 2. Patients with a history of allergy to goserelin or related medications; 3. Patients who have previously undergone menopause due to physiological or pathological factors; 4. Patients with a history of gynaecological conditions (e.g., polycystic ovary syndrome, endometriosis) that may interfere with the assessment of menstrual recovery; 5. Patients currently participating in other clinical studies that may influence menstrual recovery; 6. Patients who refuse to participate in this clinical study.