Interest of Myo-inositol Supplementation in Women With Polycystic Ovarian Syndrome (MYOPK)

April 17, 2026 updated by: University Hospital, Lille

Interest of Myo-inositol Supplementation in Women With Polycystic Ovarian Syndrome During Induction of Ovulation With Clomiphene Citrate

The main objective will be to check if MyoInositol (MYO) reduces the total resistance rate to Clomiphene Citrate (CC). For this, our study will be controlled, randomized and double blinded. It will include patients with PCOS (polycystic ovary syndrome, defined by the Rotterdam criteria) who wish to become pregnant and are eligible to simple ovulation induction by CC. Half of them will receive MYO + levomefolic acid (5-MTHF) in addition to the CC, while the other half will receive a placebo containing only 5-MTHF in addition to the CC. The MYO supplementation will be initiated at least one month before taking CC and will be continued throughout this treatment until pregnancy or before switching to another type of treatment for ovulation induction if no pregnancy is obtained after 6 ovulatory cycles.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
276

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • France
      • Lille, France
        • Recruiting
        • CHU de Lille Hôpital Jeanne de Flandre
        • Contact:
          • Geoffroy Robin, MD, PhD
        • Principal Investigator:
          • Geoffroy Robin, MD, PhD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 35 years (Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Wishing pregnancy,
  • Having PCOS defined by the Rotterdam criteria: high antral follicle count (AFC) (> 19 per ovary) and/or a disorder of the cycle and/or hyperandrogenism (at least two of the three criteria),
  • Having never been treated with CC (or previous treatment with CC interrupted for > 3 months).
  • Having received complete information and having signed consent.
  • Covered by social security

Exclusion Criteria:

  • Intolerance to CC in previous treatment,
  • BMI > 35,
  • Other associated cause of oligoanovulation requiring specific treatment (eg., Hyperprolactinemia or functional hypothalamic anovulation),
  • Ongoing pregnancy at the time of CC initiation,
  • Other male or female cause of hypo-fertility,
  • History of ovarian drilling,
  • Negative rubella serology.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Myo-Inositol + Levomefolic acid
The experimental group will receive the dietary supplement: 4 g of MYO + 0.736 mg of 5-MTHF, glucosamine salts per day per os (in 2 bags per day) in addition to the standard therapy (Clomiphene Citrate).
Dietary supplement: Myo-Inositol + Levomefolic acid
Dietary supplement Gynositol® MTHF containing myo-inositol (4 g) and Levomefolic acid on glucosamine salts(0.736 mg) in a same bags Supplementation started on average one month before treatment with Clomiphene citrate and continued throughout cycles of Clomiphene citrate (maximum 9 cycles). Treatment will be delivered during ultrasound visit at D12 of each cycle.
Other Names:
  • Myo + [6S]-5-MethylTetrahydrofolate(5-MTHF) ou Gynositol (R)
Drug: Clomiphene Citrate
Clomiphene citrate 50 mg. taking D2 to D6 of each cycle (maximum 9 cycles). Treatment will be delivered during ultrasound visit at D12 of each cycle and the dose will be increased if necessary.
Placebo Comparator: Placebo
The control group will receive the standard therapy ( Clomiphene Citrate) and a placebo containing only 0.736 mg of 5-MTHF, glucosamine salts
Drug: Clomiphene Citrate
Clomiphene citrate 50 mg. taking D2 to D6 of each cycle (maximum 9 cycles). Treatment will be delivered during ultrasound visit at D12 of each cycle and the dose will be increased if necessary.
Dietary supplement: placebo
a placebo containing only 0.736 mg of 5-MTHF, glucosamine salts

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Total resistance rate under CC for ovulation induction in patients with PCOS.
Time Frame: At each cycle during 4 months
The total resistance to CC is defined by failure to ovulate at least one time during 4 subsequent cycles in women requiring 150 mg/day from D2 to D6.
At each cycle during 4 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Rate of responders (i.e., 100% cycles with ovulation and/or occurrence of a pregnancy) at doses of 50 and 100mg of CC
Time Frame: At each cycle during one year
At each cycle during one year
Rate of drop out
Time Frame: at each cycle during one year
at each cycle during one year
Cumulative incidence of clinical pregnancy (cardiac activity on ultrasound at 6 weeks of amenorrhea)
Time Frame: During one year
During one year
Rate of patients switched to a 2nd line treatment with exogenous gonadotropins over the whole period of the study
Time Frame: At each cycle during one year
At each cycle during one year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University Hospital, Lille

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Ministry of Health, France
Laboratoires Besins International

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Goeffrey Robin, MD, University Hospital, Lille

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 12, 2023

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 12, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 26, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 15, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 23, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 22, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 17, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2015_68
  • 2016-A01246-45 (Other Identifier: ID-RCB number, ANSM)
  • PHRC_N_15-0116 (Other Identifier: PHRC number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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