PRE-GAiN Bone Health Pilot Study (PRE-GAiN)
Anorexia Nervosa
About this trial
This is an interventional treatment trial for Anorexia Nervosa focused on measuring estrogen, anorexia, bone health, bone accrual, IGF-1
Eligibility Criteria
Inclusion Criteria:
- Female
- Age 12 - 19 years old
Meet DSM-5 criteria for Anorexia Nervosa
o Criteria includes: persistent restriction of energy intake leading to significantly low body weight; either an intense fear of gaining weight or persistent behavior that interferes with weight gain; and a disturbance in the way one's body weight or shape is experienced
Amenorrhea for at least three months
- Amenorrhea is a required inclusion criteria as participants with intact menstruation do not meet justification for estrogen replacement (as they are not estrogen deficient)
- Participants will have been seen and assessed by anorexia clinic physician prior to enrollment to exclude and treat other causes of amenorrhea
- Agree to use a highly effective contraceptive method for the duration of study therapy.
Exclusion Criteria:
- Uncontrolled or chronic medical conditions that may influence bone health (i.e. hyperthyroidism, diabetes mellitus, or celiac disease)
- Use of supraphysiologic corticosteroids for greater than three months
- Pregnancy or attempting pregnancy
- Cigarette smoker
- Known history of a blood clotting disorder (i.e. Factor V Leiden, Protein C Deficiency, etc.)
- Known predisposition to estrogen-related cancers, such as breast or ovarian cancer (e.g. BRCA1)
- Hypersensitivity to this drug or to any ingredient in the formulation or component of the container
- Liver dysfunction or disease as long as liver function tests have failed to return to normal
- Known or suspected estrogen-dependent malignant neoplasia (e.g. endometrial cancer)
- Endometrial hyperplasia
- Known, suspected, or past history of breast cancer
- Undiagnosed abnormal genital bleeding
- Known or suspected pregnancy or lactation
- Active or past history of arterial thromboembolic disease (e.g. stroke, myocardial infarction, coronary heart disease)
- Active or past history of confirmed venous thromboembolism (such as deep vein thrombosis or pulmonary embolism) or active thrombophlebitis
- A high risk of venous or arterial thrombosis, including known thrombophilic disorders
- Partial or complete loss of vision due to ophthalmic vascular disease
- Presence or history of liver tumours (benign or malignant)
- Ongoing use of estrogen containing contraception (oral birth control pill, vaginal ring, patches, depo injections)
Sites / Locations
- Royal University Hospital
Arms of the Study
Arm 1
Arm 2
Experimental
No Intervention
Treatment
No Treatment
Participants randomized to the treatment arm will be divided by maturational status: Participants who have had their first period or have a bone age greater than or equal to 14 years will receive PrClimara® 25 (estradiol hemihydrate transdermal system - 25 mcg/day) as a weekly patch, for 24 months. o These participants will also receive progesterone (Provera 10 mg tablet) orally every 4 weeks, for 7 days during the second half of the planned menstrual cycle, in order to induce a menstrual period. Participants who have not yet had their first period and have a bone age below 14 years will receive an increasing dose of estrogen. These participants will be initiated on graduated dose of transdermal 17-β estradiol patches: 3.1 mcg/day (1/8 patch) for first six-months, 6.2 mcg/day (1/4 patch) for second six-months, 12.5 mcg/day (1/2 patch) for third six-months, and 25 mcg/day (full patch) for final six-months.
The participants in this group will not receive the estrogen patch nor the oral progesterone.