Transgenderism Clinical Trial
Official title:
Androgen Effects on the Reproductive Neuroendocrine Axis
This research study investigates whether male-level exogenous androgens inhibit the reproductive neuroendocrine axis in otherwise healthy (non-PCOS) females.
Status | Not yet recruiting |
Enrollment | 80 |
Est. completion date | June 1, 2029 |
Est. primary completion date | June 1, 2028 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Female |
Age group | 18 Years to 35 Years |
Eligibility | Inclusion Criteria: All 1. Provision of signed and dated informed consent form 2. Stated willingness to comply with all study procedures and availability for the duration of the study 3. Aged 18-35 Transgender/Non-binary Group - Initiators 4. Plan to initiate testosterone therapy 5. History of regular menstrual cycles (every 24-35 days) at baseline, before beginning TRT Transgender/Non-binary Group - Discontinuers 4. Plan to discontinue testosterone therapy 5. History of regular menstrual cycles (every 24-35 days) before beginning TRT Cisgender Female Group 4. Having regular menstrual cycles (every 24-35 days) Exclusion Criteria: All 1. Pregnant 2. Incarcerated 3. Known cognitive impairment or institutionalized 4. Hemoglobin less than 11 gm/dl at screening evaluation 5. Weight less than 110 pounds 6. BMI <18 or >35 7. Current endocrine disease- including untreated thyroid abnormalities, pituitary or adrenal disease, polycystic ovary syndrome, or androgen producing tumor 8. Current or recent pregnancy within two months of study enrollment 9. Current or recent breast feeding within two months of study enrollment 10. Diabetes, or renal, liver, or heart disease 11. History of oophorectomy or hysterectomy 12. History of radiation or surgery involving brain structures 13. Currently taking any medications that may affect their reproductive hormones, such as contraceptive medications, androgens, estrogens, progestins, GnRH antagonists, GnRH agonists, insulinomimetics, and metformin. For TRT Initiation Group and Cisgender Female group: 14. History of prior testosterone therapy |
Country | Name | City | State |
---|---|---|---|
United States | University of California San Diego | San Diego | California |
Lead Sponsor | Collaborator |
---|---|
University of California, San Diego | Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH) |
United States,
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* Note: There are 35 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Evidence of Luteal Activity (ELA) | Evidence of Luteal Activity (ELA), as defined by a 3-fold increase in urinary pregnanediol glucuronide (PdG) level over baseline. Basal urinary PdG levels, normalized to urinary creatinine excretion, will be determined based upon the minimum daily PdG level detected per cycle or 4-wk interval. PdG will be measured via enzyme-linked immunosorbent assay (ELISA). | Through study completion, an average of 7 months. | |
Primary | Determination of pulsatile LH secretion | Subjects will have baseline measurement of serum LH immediately followed by frequent blood sampling at 10-min intervals for 8 h. We will measure LH pulse frequency, the number of LH pulses per 8 hours. | Through study completion, an average of 7 months. | |
Primary | Uterine bleeding pattern. | All subjects will complete a daily uterine bleeding log using REDCap® | Through study completion, an average of 7 months. | |
Secondary | Determination of gonadotropin levels | Measurement of of serum FSH and LH levels, in IU/mL | Through study completion, an average of 7 months. | |
Secondary | Determination of serum FSH, AMH and testosterone | During testing of LH pulses (Primary outcome 2), FSH, AMH and testosterone levels will be measured hourly. | Through study completion, an average of 7 months. | |
Secondary | Determination of ovarian/uterine morphology: Presence of corpus luteum | TGN will undergo weekly ultrasound (US) following TRT initiation for confirmation of corpus lutes (CL) formation (Yes/No). | Through study completion, an average of 7 months. | |
Secondary | Determination of ovarian/uterine morphology: Thickness of endometrium | TGN will undergo weekly ultrasound (US) following TRT initiation to measure endometrial thickness (mm). | Through study completion, an average of 7 months. | |
Secondary | Determination of ovarian/uterine morphology: Ovarian astral follicle count. | TGN will undergo weekly ultrasound (US) following TRT initiation to measure astral follicle count (AFC). | Through study completion, an average of 7 months. | |
Secondary | Determination of ovarian/uterine morphology: volume of uterus and ovaries | TGN will undergo weekly ultrasound (US) following TRT initiation to measure volume of uterus and ovaries (mL). | Through study completion, an average of 7 months. |
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