A Pharmacodynamic Study of Leuprorelin Gelatin-Free Formulation in Female Subjects With Uterine Fibroids.

Inclusion Criteria: * Female patients with measurable uterine fibroids confirmed by vaginal or abdominal ultrasound, deemed otherwise healthy. * A body mass index in the range 18 to 28. * Oestradiol, progesterone, luteinizing hormone and follicle stimulating hormone results within the range of normal ovarian function. * Regular menstruation (except for symptoms of fibroids). * Females of childbearing potential who are sexually active must agree to use barrier contraception, and can neither be pregnant nor lactating from Screening throughout the duration of the study. Exclusion Criteria: * Acute pelvioperitonitis, ovarian cysts, persistent corpus luteum. * History of bilateral oophorectomy, hysterectomy, or hypophysectomy. * Clinically relevant abnormal history, physical findings, or laboratory values at the pre-study screening assessment that could interfere with the objectives of the study or the safety of the patient. * Presence of acute or chronic illness or history of chronic illness sufficient to invalidate the patient participation in the study or make it unnecessarily hazardous. * Impaired endocrine, thyroid, hepatic, respiratory or renal function, diabetes mellitus, coronary heart disease, or history of any psychotic mental illness. * Presence or history of severe adverse reaction to any drug. * Participation in other clinical studies of a new chemical entity or a prescription medicine within the previous 3 months. * Presence or history of drug or alcohol abuse, or smoking of more than 10 cigarettes daily. * Evidence of drug abuse on urine testing. * Positive test for hepatitis B, hepatitis C, human immune deficiency virus 1 or human immune deficiency virus 2. * Severe bleedings from fibroids. * Anemia (hemoglobin less than 11 g/dL), loss of more than 400 mL blood during the 3 months before the study. * Use of oral contraceptives or other estrogen containing medication, progestins, danazol, progesterone antagonists, antiandrogens, steroids or gonadotropins which might affect sex steroid production or activity or assay (e.g. norethindrone) within 30 days prior to study enrolment.