ClinicalTrials.gg
RecruitingNCT06889454Updated Nov 19, 2025

Cardiovascular and Endothelial Markers During OGTT Before and at Six and Twelve Months Post-treatment in Women With PCOS

An observational study in PCOS, Hyperinsulinism and Hyperandrogenism, sponsored by Attikon Hospital. Recruiting at 1 site in Greece. Open to female participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2025-11-19.

Primary conditionMetabolic SyndromeRegistry: HyperinsulinismReclassifiedWhy we changed it
Registry
Hyperinsulinism — the first condition term the registry derived for this study.
ClinicalTrials.gg
Metabolic Syndrome
Why
  1. The study's listed conditions name Metabolic Syndrome, a narrower term within Hyperinsulinism.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Attikon Hospital · Observational

From the registry’s dates

  • Started Feb 2024; still recruiting 2 years 9 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
120
Ages
18 Years to 45 Years
Sex
Female
01

Study summary

The aim of the present study is to investigate a) the presence of subclinical markers of vascular, myocardial and endothelial function in women with PCOS b) the acute alterations in these markers during the oral glucose tolerance test (OGTT) c) the impact of potential treatment interventions in these markers.

Read the detailed description

All the woman who will recruited in the study will undergo OGTT. At 0, 60, and 120 min of glucose load the investigators will measure: a) glucose and insulin, b) pulse wave velocity (PWV) c) augmentation index (Aix) and d) perfused boundary region of sublingual microvessels (high PBR values represent reduced glycocalyx thickness). At 0 and 120 min of glucose load, the investigators will assess: a) coronary flow reserve (CFR) using Doppler echocardiography, b) LV longitudinal strain (LS) of subendocardial, mid-myocardial and subepicardial layers and global LS (GLS) c) peak twisting (pTw), untwisting velocity (pUtwVel) by speckle tracking echocardiography d) flow mediated dilation (FMD) of the brachial artery, e) Carotid intima-media thickness. Matsuda index, insulin sensitivity index (ISI) and HOMA index will be also measured. The levels of Testosterone (Τesto), Sex hormone binding globulin (SHBG), dehydroepiandrosterone sulfate (DHEA-s), Prolactin (PRL), 17-hydroxyprogesterone (17-OH-PRG) ,Androstenedione (Δ4) and Metalloproteinase 9 will be also assessed. After six months of treatment intervention, the patient will undergo the previously described measurements. Primary Endpoints include the change in GLS, PWV, and PBR during OGTT and six months after treatment intervention. Secondary Endpoints include the change in CFR and FMD during OGTT and six months after treatment intervention.

02

Conditions studied

  • PCOS
  • Hyperinsulinism
  • Hyperandrogenism
  • Metabolic Syndrome

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03

In context

Metabolic Syndrome Reclassified

2,116 studies on the registry are indexed under Metabolic Syndrome; 347 are open to participants now.

This study's planned enrollment of 120 is below the median of 197 across 496 observational studies indexed under Metabolic Syndrome.

Browse Metabolic Syndrome studies →

Lead sponsor

Attikon Hospital is the lead sponsor of 86 studies on the registry; 17 are open to participants now.

Compared within Metabolic Syndrome, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Hyperinsulinism. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Women with PCOS

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Age > 16 years old
  2. Diagonis of PCOS according to Rotterdam criteria: presence of two of the three of the following:

    • Clinical or biochemical hyperandrogenism
    • Anovulation or oligo-ovulation
    • Polycystic ovarian morphology (PCOM)
  3. Absence of treatment for PCOS the last six months
  4. Patients who have the ability to understand and sign the consent form.

Exclusion criteria

Exclusion Criteria:

  1. Disorders with clinical presentation similar to PCOS: thyroid disease, hyperprolactinemia, and non-classic congenital adrenal hyperplasia (primarily 21-hydroxylase deficiency by serum 17-hydroxyprogesterone [17-OHP]), Cushing syndrome, acromegaly
  2. Treatment with or metformin
  3. Type 2 diabetes mellitus
  4. Treatment for diabetes
  5. Pregnancy
  6. Lactation
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
120 participants (estimated)
Patient registry
No

Groups and cohorts

  • GLP-1 agonists

    30 women will receive lifestyle modification and GLP-1RA.

    Drug: GLP-1 receptor agonist

  • Oral contraceprives

    30 women will receive lifestyle modification and OCP.

    Drug: Oral contraceptive

  • Metformin

    30 women will receive lifestyle modification and metformin

    Drug: Metformin

  • Lifestyle Modification

    30 women will receive only lifestyle modification

    Other: Lifestyle modification

Interventions

  • 30 women will receive lifestyle modification and GLP-1 receptor agonists

  • DrugOral contraceptive

    30 women will receive lifestyle modification and oral contraceptive

  • 30 women will receive lifestyle modification and metformin

  • OtherLifestyle modification

    30 women will receive only lifestyle modification

06

What researchers measure

Primary outcomes

  1. Τhe change in Global Longitudinal Strain during Oral glucose Tolerance Test

    Τhe change in Global Longitudinal Strain at 0 and 120 minute after glucose load

    Time frame: 120 minute of Oral glucose Tolerance Test

  2. The change in Pulse Wave Velocity during Oral glucose Tolerance Test

    The change in Pulse Wave Velocity at 0 and 120 minute after glucose load

    Time frame: 120minute of Oral glucose Tolerance Test

  3. The change in Perfused Boundary Region during Oral glucose Tolerance Test

    The change in Perfused Boundary Region at 0 and 120 minute after glucose load

    Time frame: 120minute of Oral glucose Tolerance Test

  4. The change in Global Longitudinal Strain

    The change in Global Longitudinal Strain 6 months after treatment intervention

    Time frame: six months

  5. The change in Pulse Wave Velocity

    The change in Pulse Wave Velocity 6 months after treatment intervention

    Time frame: six months

  6. The change in Perfused Boundary Region

    The change in Perfused Boundary Region 6 months after treatment intervention

    Time frame: six months

  7. The change in Metalloproteinase 9

    The change in Metalloproteinase 9 six months after tretament intervention

    Time frame: six months

Secondary outcomes

  1. Τhe change in Coronary flow reserve during Oral glucose Tolerance Test

    Τhe change in Coronary flow reserve at 0 and 120 min after glucose load

    Time frame: 120 min of Oral glucose Tolerance Test

  2. Τhe change in Flow mediated Dilation during Oral glucose Tolerance Test

    Τhe change in Flow mediated Dilation at 0 and 120 min after glucose load

    Time frame: 120min of Oral glucose Tolerance Test

  3. The change in Coronary flow reserve

    The change in Coronary flow reserve 6 months after treatment intervention

    Time frame: six months

  4. The change in Flow mediated Dilation

    The change in Flow mediated Dilation 6 months after treatment intervention

    Time frame: six months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2024 to primary completion in Feb 2025, 12 months.

Of 149 non-industry observational studies under Metabolic Syndrome, half reached primary completion within 43 months of starting (the median), counting those still running; a quarter within 18 and three quarters within 106. This study's 12 months is below that.

Counting every sponsor, half of 160 studies reached it within 42 months; a quarter within 18 and three quarters within 106.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 16, 2025
First posted
Mar 21, 2025
StartActual
Feb 1, 2024
Primary completionActual
Feb 1, 2025
CompletionEst.
Feb 1, 2026
Last update
Nov 19, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 19, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06889454
Lead sponsor
Attikon Hospital
Responsible party
VAIA LAMBADIARI (Professor of Internal Medicine-Endocrinology, Attikon Hospital) — Principal investigator
First posted
Mar 21, 2025
Start date
Feb 1, 2024
Primary completion
Feb 1, 2025
Completion
Feb 1, 2026 (estimated)
Last update
Nov 19, 2025

Study contacts

VAIA lAMBADIARI, Professor
Contact
vlambad@otenet.gr
2105831148

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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