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CompletedNCT00151411Updated Mar 21, 2018Results posted

Lifestyle Intervention and Metformin for Women With Polycystic Ovary Syndrome (PCOS)

A Phase 2 interventional study of Metformin and Placebo in Polycystic Ovary Syndrome, sponsored by Milton S. Hershey Medical Center. Completed at 1 site in United States. Open to female participants aged 12 Years to 39 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-03-21.

Sponsored by Milton S. Hershey Medical Center · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
114
Allocation
Randomized
Ages
12 Years to 39 Years
Sex
Female
01

Study summary

The purpose of this study is to determine if the combination therapy of lifestyle intervention and use of Metformin together will improve ovulation induction and hyperandrogenemia in women with polycystic ovary syndrome, by gathering data from adult and adolescent females.

Read the detailed description

PCOS is characterized by excess circulating androgen levels and chronic anovulation. PCOS is also characterized by insulin resistance and hyperinsulinemia. Several recent studies in a variety of non-hospital based populations have provided evidence that the incidence of hyperandrogenic chronic anovulation is in the range of 4-6% of the female population. Improvements in insulin sensitivity in women with PCOS, either through lifestyle changes or through pharmaceutical intervention, have consistently resulted in a marked improvement in the reproductive and metabolic abnormalities in PCOS. The primary objective in the adult female population is to determine that combination therapy will improve ovulatory frequency. Secondary objective is to improve circulating hyperandrogenemia and insulin sensitivity then single agent therapy. The primary objective of the adolescent population is to determine that the combination therapy will improve hyperandrogenemia. Secondary objective is to improve ovulatory frequency and insulin sensitivity than just the use of a single agent therapy.

02

Conditions studied

  • Polycystic Ovary Syndrome

Keywords

  • Polycystic Ovary Syndrome (PCOS)
  • Anovulation
  • Elevated Testosterone
03

In context

Polycystic Ovary Syndrome

944 studies on the registry are indexed under Polycystic Ovary Syndrome; 174 are open to participants now.

This study's enrollment of 114 is above the median of 70 across 685 interventional studies indexed under Polycystic Ovary Syndrome.

Browse Polycystic Ovary Syndrome studies →

Lead sponsor

Milton S. Hershey Medical Center is the lead sponsor of 480 studies on the registry; 61 are open to participants now.

Of its 56 completed or terminated interventional studies of FDA-regulated products, 42 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years to 39 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • Spontaneous intermenstrual periods of greater than or equal to 45 days or a total of 8 or less periods per year
  • Elevated testosterone levels
  • General good health
  • Off of current medications which may confound response to study medications

Exclusion criteria

Exclusion Criteria:

  • Pregnancy
  • Lactose Intolerance
  • Medical Contraindications
  • Elevated Prolactin, 17hydroxyprogesterone, or Follicle stimulating hormone blood tests
  • Diabetes, liver, heart, kidney or uncorrected thyroid disease
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
114 participants (actual)

Study arms

  • Experimental
    Metformin

    Metformin

    Drug: Metformin · Behavioral: Lifestyle Intervention

  • Placebo comparator
    Placebo

    Placebo

    Drug: Placebo · Behavioral: Lifestyle Intervention

Interventions

  • DrugMetformin

    Medication was initiated in a step-up fashion every five days, from one tablet per day to four (500 mg per tablet).

  • DrugPlacebo

    Placebo

  • BehavioralLifestyle Intervention

    A combined intervention of diet and exercise was employed with the goal of achieving an average weight loss of at least 7% of initial body weight over six months with a prescription of 150 min/week of exercise combined with a low-calorie diet.

06

What researchers measure

Primary outcomes

  1. Change in Testosterone After 6 Months of Treatment

    Time frame: baseline and 6 months

Secondary outcomes

  1. Ovulation Rate

    Count of ovulations per subject during the treatment period.

    Time frame: 6 months

  2. Change in Insulin Sensitivity Index After 6 Months of Treatment

    Time frame: baseline and 6 months

07

Results

Posted Nov 8, 2011

Participant flow

Participant flow — Overall Study
MilestoneMetforminPlacebo
Started5559
Completed2216
Not completed3343
Withdrew: Lost to follow-up1519
Withdrew: Withdrawal by subject1220
Withdrew: Adverse event60
Withdrew: Pregnancy04

Outcome measures

PrimaryChange in Testosterone After 6 Months of Treatment
Time frame:
baseline and 6 months
Reported as:
Least squares mean · ng/dL
Change in Testosterone After 6 Months of Treatment
ng/dLMetforminPlacebo
Change in Testosterone After 6 Months of Treatment-2.1 (-12.1 to 7.9)-6.4 (-16.9 to 4.1)
Statistical analysis
  • Metformin vs Placebo · Mixed Models Analysis · p = 0.54 · Mean difference (final values): 4.3 · 95% CI -9.9 to 18.4
SecondaryOvulation Rate

Count of ovulations per subject during the treatment period.

Time frame:
6 months
Reported as:
Count of participants · Participants
Ovulation Rate
ParticipantsMetforminPlacebo
0 ovulations1019
1 ovulation65
2 ovulations47
3 ovulations73
4 ovulations42
5 ovulations10
6+ ovulations53
Statistical analysis
  • Metformin vs Placebo · Zero-altered negative binomial model · p = 0.07 · Rate ratio: 2.5 · 95% CI 0.9 to 6.6Placebo is the reference group, i.e. for the rate ratio, Metformin represents the numerator and Placebo the denominator.
  • Metformin vs Placebo · Zero-altered negative binomial model · p = 0.51 · Rate ratio: 1.2 · 95% CI 0.7 to 1.9Placebo is the reference group, i.e. for the rate ratio, Metformin represents the numerator and Placebo the denominator.
SecondaryChange in Insulin Sensitivity Index After 6 Months of Treatment
Time frame:
baseline and 6 months
Reported as:
Least squares mean · index
Change in Insulin Sensitivity Index After 6 Months of Treatment
indexMetforminPlacebo
Change in Insulin Sensitivity Index After 6 Months of Treatment1.9 (-1.0 to 4.8)-2.7 (-6.2 to 0.9)
Statistical analysis
  • Metformin vs Placebo · Mixed Models Analysis · p = 0.05 · Mean difference (final values): 4.6 · 95% CI 0.1 to 9.0

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Metformin—0/55 (0%)38/55 (69.1%)
Placebo—0/59 (0%)33/59 (55.9%)
Most frequent other events
Showing 10 of 17
Most frequent other events
EventMetforminPlacebo
DiarrheaGastrointestinal disorders19/556/59
common cold/respiratory tract infectionInfections and infestations12/5513/59
headache/migraineNervous system disorders12/5511/59
nausea and/or vomitingGastrointestinal disorders9/557/59
dysmenorrhea/crampsReproductive system and breast disorders7/559/59
musculoskeletalMusculoskeletal and connective tissue disorders5/559/59
fluGastrointestinal disorders8/554/59
stomach/abdominal pain or discomfortGastrointestinal disorders6/557/59
altered mood/mood swingsNervous system disorders0/555/59
fatigueNervous system disorders2/554/59

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)MetforminPlaceboTotal
<=18 years000
Between 18 and 65 years5559114
>=65 years000
Age, Continuous
Age, Continuous(years)MetforminPlaceboTotal
Mean29 ± 4.528.8 ± 4.628.9 ± 4.6
Sex: Female, Male
Sex: Female, Male(Participants)MetforminPlaceboTotal
Female5559114
Male000
Region of Enrollment
Region of Enrollment(participants)MetforminPlaceboTotal
United States5559114
08

Study locations

1 site
  • Penn State Milton S. Hershey Medical Center
    Hershey, Pennsylvania 17033, United States
09

References and documents

Publications

  • Ladson G, Dodson WC, Sweet SD, Archibong AE, Kunselman AR, Demers LM, Lee PA, Williams NI, Coney P, Legro RS. Effects of metformin in adolescents with polycystic ovary syndrome undertaking lifestyle therapy: a pilot randomized double-blind study. Fertil Steril. 2011 Jun 30;95(8):2595-8.e1-6. doi: 10.1016/j.fertnstert.2011.05.048. PubMed 21704212 ↗
  • Ladson G, Dodson WC, Sweet SD, Archibong AE, Kunselman AR, Demers LM, Williams NI, Coney P, Legro RS. The effects of metformin with lifestyle therapy in polycystic ovary syndrome: a randomized double-blind study. Fertil Steril. 2011 Mar 1;95(3):1059-66.e1-7. doi: 10.1016/j.fertnstert.2010.12.002. Epub 2010 Dec 30. PubMed 21193187 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 21, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00151411
Lead sponsor
Milton S. Hershey Medical Center
Collaborators
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Responsible party
Richard S. Legro, M.D. (Professor, Obstetrics and Gynecology and Public Health Sciences, Milton S. Hershey Medical Center) — Principal investigator
First posted
Sep 9, 2005
Start date
Oct 2004
Primary completion
Mar 2008
Completion
Mar 2008
Results posted
Nov 8, 2011
Last update
Mar 21, 2018

Study contacts

Richard Legro, M.D.
principal investigator · Milton S. Hershey Medical Center

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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