Metformin Administration in Infertile Anovulatory PCOS Patients

• Status: Withdrawn
• Trial end date: 1969-12-31
• Target enrollment: 0
• Participant gender: Female

Summary

In a recent prospective study evaluating the efficacy of 1700 mg/day metformin as first-line approach for infertile anovulatory patients with PCOS, we identified predictors for metformin efficacy. Our analysis demonstrated that body mass index (BMI) and insulin resistance were the strongest predictors for both ovulation and pregnancy. In particular, adjusting the data for insulin resistance, a trend in reduced effectiveness was observed with increasing BMI. On the other hand, adjusting the data for BMI, a trend in improved efficacy was detected for higher insulin resistance degrees.

To date, no dose-finding study is currently available in literature evaluating the best dose of metformin to administer. In addition, very few data regarding the best protocol for metformin treatment also are available. However, in order to reduce drug-related side effects incidence due to start-up syndrome, metformin is generally administrated with meals at incremental weekly doses until the maximum dosage ranging from 500 to 2550 mg daily; the doses are reduced if side effects appear. This commonly accepted protocol has not been supported by scientific evidences.

The aim of the present study will be to evaluate in a clinical setting the compliance, the safety and the effectiveness of two schedules for metformin administration in infertile anovulatory PCOS patients.

• Phase: Phase 4

Details

• Lead Sponsor: University Magna Graecia
• Treatments: Metformin

Criteria

Inclusion Criteria:

• Polycystic ovary syndrome (using NIH criteria)

• Anovulatory infertility (using WHO criteria)

Exclusion Criteria:

• Age <18 or >35 years

• Severe obesity (BMI >35)

• Neoplastic, metabolic, hepatic, and cardiovascular disorders or other concurrent medical illnesses

• Hypothyroidism, hyperprolactinemia, Cushing's syndrome, and non-classical congenital adrenal hyperplasia Current or previous (within the last six months) use of oral contraceptives, glucocorticoids, antiandrogens, antidiabetic and anti-obesity drugs or other hormonal drugs

• Previous use of ovulation induction agents

• Intention to start a diet or a specific program of physical activity

• Organic pelvic diseases

• Previous pelvic surgery

• Suspected peritoneal factor infertility

• Tubal or male factor infertility or sub-fertility