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Clinical trialNCT00413179CompletedPhase 3Interventional

The Effect of Metformin Added to Clomiphene Citrate on Pregnancy Rates in Hyperandrogenic, Chronic Oligoovulatory or Anovulatory Women

Sponsor59th Medical WingEnrollment56AnovulationHyperandrogenismInfertilityOligoovulationPolycystic Ovary Syndrome
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The purpose of our study was to conduct a placebo controlled, double-blind randomized trial in chronic oligoovulatory or anovulatory , hyperandrogenic, infertility patients comparing the effects of adjuvant metformin plus clomiphene citrate to clomiphene citrate plus placebo on pregnancy rates and ovulation rates. We hypothesized that combining metformin with clomiphene citrate would result in higher ovulation and pregnancy rates in hyperandrogenic women who have chronic oligoovulation or anovulation as the sole etiology for their infertility and who have unknown responsiveness to clomiphene citrate.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

  • Randal D Robinson, MD

    Wilford Hall Medical Center and Brooke Army Medical Center

    Principal Investigator
    clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Wiford Hall Medical Center

    Lackland Air Force Base, Texas, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Clomiphene →Metformin →Placebo
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
31 Dec 1997
Primary completion
—
Completion
30 Apr 2003
Last update posted
19 Dec 2006
Registered enrollment
56
Registry id
NCT00413179
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.