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Sponsors and Collaborators: |
Children's Hospital Boston Brigham and Women's Hospital |
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Information provided by: | Children's Hospital Boston |
ClinicalTrials.gov Identifier: | NCT00474851 |
The purpose of this study is to determine whether a regimen of norethindrone acetate + placebo or norethindrone acetate + conjugated estrogens is superior in maintaining skeletal health and quality of life in adolescents treated with a GnRH agonist for endometriosis.
Condition | Intervention | Phase |
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Endometriosis |
Drug: Norethindrone acetate Drug: conjugated estrogens |
Phase II |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Double-Blind, Active Control, Single Group Assignment, Safety/Efficacy Study |
Official Title: | The Effect of Hormonal Add-Back Therapy in Adolescents Treated With a GnRH Agonist for Endometriosis: A Randomized Trial |
Estimated Enrollment: | 50 |
Endometriosis has become increasingly recognized as a chronic illness which begins during adolescence. Untreated endometriosis may lead to chronic pain and infertility. As recognition of the need for prompt therapy increases, so does the length of time patients will be exposed to treatments. As a result, there exists a pressing need to evaluate adjunctive measures that may limit the associated negative health consequences of treatment.
A gonadotropin-releasing hormone (GnRH) agonist is one medication utilized for patients who have failed other treatments. While GnRH-agonists are effective in relieving symptoms, their long-term use is problematic. GnRH agonists induce a low-estrogen state, causing deleterious effects on bone mineralization. These negative consequences are especially important for our pediatric patients. Adolescence is the critical period in a woman’s life for bone acquisition and attainment of peak bone mass. Anything that interferes with this process puts patients at risk for lifelong low bone density and future fracture.
“Add-back” therapy appears to be a promising adjunct to treatment for prevention of this bone loss. Daily therapy with low-doses of hormones preserves bone density in adult patients, without altering the efficacy of the GnRH-agonist. However, no data exist on the effect of add-back therapy in adolescents.
The aim of the current study is to evaluate the safety and efficacy of two add-back regimens, norethindrone acetate + placebo or norethindrone acetate + conjugated estrogens, for the preservation of skeletal health and quality of life in adolescents with endometriosis treated with a GnRH-agonist.
Ages Eligible for Study: | 13 Years to 22 Years |
Genders Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
Medication use known to affect bone metabolism:
Contact: Amy D DiVasta, MD, MMSc | 617-355-3792 | amy.divasta@childrens.harvard.edu |
Contact: Catherine M Gordon, MD, MSc | 617-355-5484 | catherine.gordon@childrens.harvard.edu |
United States, Massachusetts | |
Children's Hospital Boston | |
Boston, Massachusetts, United States, 02115 |
Principal Investigator: | Amy D DiVasta, MD, MMSc | Children's Hospital Boston |
Study ID Numbers: | 07-01-0004 |
Study First Received: | May 15, 2007 |
Last Updated: | May 15, 2007 |
ClinicalTrials.gov Identifier: | NCT00474851 |
Health Authority: | United States: Food and Drug Administration |
Endometriosis Adolescents Bone density GnRH Agonist Add-back therapy |
Genital Diseases, Female Deslorelin Estrogens, Conjugated (USP) |
Norethindrone Endometriosis Norethindrone acetate |
Estrogens Molecular Mechanisms of Pharmacological Action Contraceptive Agents Physiological Effects of Drugs Contraceptives, Oral Hormones, Hormone Substitutes, and Hormone Antagonists Contraceptive Agents, Female |
Enzyme Inhibitors Reproductive Control Agents Hormones Pharmacologic Actions Therapeutic Uses Contraceptives, Oral, Synthetic |