Triptorelin for the Prevention of Ovarian Damage in Adolescents and Young Adults With Cancer

Inclusion Criteria: * \< 40 years of age at the time of enrollment * Patient must be a post-menarchal female and report that their initial menstrual period occurred \> 6 months prior to enrollment. (Current menstrual status is not part of the inclusion criteria.) * Newly diagnosed with first cancer, exclusive of breast cancer. * Note: Apart from breast carcinoma, other tumor types originating in the breast are permitted (e.g., sarcoma, lymphoma). * Planned treatment must include one or more of the following alkylating agents delivered with curative intent: cyclophosphamide, ifosfamide, procarbazine, chlorambucil, carmustine (BCNU), lomustine (CCNU), melphalan, thiotepa, busulfan, nitrogen mustard. * For patients \< 20 years of age at enrollment, the expected alkylator dose must be ≥ 4 g/m\^2 cumulative cyclophosphamide equivalent dose (CED). For patients ≥ 20 years of age at enrollment, any planned alkylator dose is permitted. Eligible patients must receive at least one of the alkylators that contribute to CED. * All patients and/or their parents or legal guardians must sign a written informed consent. * All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met. Exclusion Criteria: * Any planned radiation to the pelvis; or cranial radiation ≥ 30 gray (Gy) to the hypothalamus, inclusive of any total body irradiation (TBI). * Planned bilateral oophorectomy. Note: A participant's desire to pursue a…