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  • Title: Depot leuprolide acetate versus danazol in the treatment of women with symptomatic endometriosis: a multicenter, double-blind randomized clinical trial. II. Assessment of safety. The Lupron Endometriosis Study Group.
    Author: Wheeler JM, Knittle JD, Miller JD.
    Journal: Am J Obstet Gynecol; 1993 Jul; 169(1):26-33. PubMed ID: 8333471.
    Abstract:
    OBJECTIVES: This is the first multicenter, double-blind randomized clinical trial that compares a depot gonadotropin-releasing hormone agonist with danazol in the treatment of endometriosis. Efficacy results have been previously reported; this report focuses on safety data. STUDY DESIGN: A total of 270 patients from 22 centers were randomly selected to receive either leuprolide acetate depot (3.75 mg injected monthly) or danazol (800 mg administered orally daily). Safety outcomes included adverse effects, clinical laboratory changes, and bone mineral density changes. RESULTS: Most patients receiving either drug reported side effects, most of which were related to the hypoestrogenism of leuprolide (e.g., vasodilatation) and relative hyperandrogenism of danazol (e.g., weight gain). Similarly small numbers of patients dropped out of the two treatment groups because of the side effects encountered. Leuprolide depot caused a greater decrease in bone density; preliminary data suggest a return to baseline on cessation of the drug. Danazol was associated with alteration of serum lipids, specifically a significant decrease in high-density lipoprotein. CONCLUSIONS: Although side effects were commonly reported in both groups, the drugs were similarly safe in terms of the absence of serious complications and the results of cessation of therapy. Side effects were largely reversible on discontinuation of medication. More longitudinal data are necessary before the possibility of long-term risks can be excluded, especially as they pertain to bone mineral density and lipids.
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