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Efficacy and Safety of Estradiol and Progesterone Microspheres for the Treatment of Climacteric Symptoms.

Information source: Centro A.F. de Estudios Tecnologicos, S.A.
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Menopause

Intervention: Estradiol and Progesterone (Drug); Estradiol and Progesterone (Drug)

Phase: Phase 2/Phase 3

Status: Completed

Sponsored by: Centro A.F. de Estudios Tecnologicos, S.A.

Official(s) and/or principal investigator(s):
Manuel Cortes Bonilla, Ob/Gyn, Principal Investigator


During menopause a woman's body slowly produces less of the hormones estrogen and progesterone. Lower hormone levels in menopause may lead to hot flashes, vaginal dryness and osteoporosis. To help with these problems, women are often given estrogen or estrogen with progestin. The purpose of this study is to assess and compare the efficacy and safety of three doses of estradiol and progesterone for the treatment of the climacteric symptoms

Clinical Details

Official title: Comparative Efficacy and Safety Study of Three Different Doses of a Formulation Composed of Crystalline Estradiol and Progesterone Microspheres, Indicated for Monthly IM Injection for the Treatment ot Climacteric Symptoms.

Study design: Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Primary outcome: Change of frequency and intensity of vasomotor symptoms

Secondary outcome: Frequency and intensity of vulvar and vaginal atrophy symptoms Vaginal pH Index of vaginal maturation (surface, intermediate and parabasal cells) Karyopiknotic index Lipids profile Utian quality of life scale Green climacteric symptoms scale

Detailed description: Different formulations of estrogens and progestins have been used for the treatment of climacteric symptoms, however up to this date no formulation is completely satisfactory. Our company has developed a new technology for the preparation of controlled release bioerodible non-polymeric microspheres, these microspheres are capable of delivering doses of estradiol (E) and progesterone (P) at levels appropriate for the Hormonal Replacement Therapy (HRT) in order to relieve the climacteric symptoms. Non clinical and clinical studies have been conducted aimed at assessing the pharmacokinetics of these microspheres, at several doses of progesterone and estradiol. Results show that sustained plasma profiles for both steroids within the therapeutic range for several days are attained. On this basis, a new efficacy and safety study is going to be conducted with the purpose of assessing and defining the most appropriate doses of estradiol and progesterone for the HRT of the climacteric symptoms. Three different doses of progesterone and estradiol (0. 5 mg of E + 15 mg of P vs 1 mg of E + 20 mg of P vs 1 mg of E + 30 mg of P) will be compared in terms of their efficacy and safety to treat the climacteric symptoms in healthy postmenopausal women.


Minimum age: 40 Years. Maximum age: 65 Years. Gender(s): Female.


Inclusion Criteria:

- Age between 40 and 65 years.

- Perimenopausal subjects: Women showing spontaneous amenorrhea during the last 11


- Postmenopausal subjects: Women with not less than 12 consecutive months of amenorrhea

and FSH > 40 mIU/mL

- Subjects showing vasomotor symptoms, not less than 3 hot flashes in a day or not less

than 21 hot flashes in a week

- Healthy subjects determined on the basis of a satisfactory complete clinical history,

clinical laboratory tests, cervical cytology, endometrium biopsy and vaginal pelvic ultrasonography.

- Subjects not receiving any hormonal treatment.

Exclusion Criteria:

- Subjects with background of endometrial hyperplasia or endometrial cancer.

- Subjects with endometrial hyperplasia or endometrial cancer assessed by endometrial


- Perimenopausal subjects with background of abnormal uterine bleeding unless the

Principal Clinical Investigator considers that this abnormality is secondary to the menopausal condition.

- Subjects with hypersensitivity to any medicament.

- Subjects with direct family background of breast cancer.

- Subjects with background of cardiovascular disease, renal, hepatic, metabolic,

gastrointestinal, neurologic, endocrine, gynecologic disease including dysfunctional uterine bleeding, cervico uterine dysplasia, cancer, anemia, emotional disorders, or any other chronic degenerative disorders which could affect her participation in the study.

- Subjects who require any medicament in the course of the study unless the Principal

Clinical Investigator considers that there is no pharmacological interaction.

Locations and Contacts

Centro A.F. de Estudios Tecnologicos, S.A., Mexico, DF 03100, Mexico
Additional Information

Starting date: April 2007
Last updated: August 21, 2009

Page last updated: August 23, 2015

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