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PreeclampsiaCAPNCT07565727

Cardiometabolic Disease and Substrate Metabolism

An observational study of Preeclampsia and Gestational Diabetes Mellitus (GDM), run by University of Tennessee Graduate School of Medicine at 1 site in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This study's primary purpose is to determine the potential relationship between cardiometabolic disease, specifically insulin resistance (HOMA-IR), and maternal lipid oxidation. Read more about this study

Who is it for?
Ages 18 to 45 years, women only
How many people
50 participants
Where
1 siteUnited States
Study dates
10 Dec 2025to Aug 2027
How long will I take part?
9 Months
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • Women only
  • No healthy volunteers
  • Adult

Study population: Pregnant individuals at risk for preeclampsia

Who may be able to join

  • Age 18-45
  • Any pre-pregnancy BMI
  • At least one high risk OR one moderate risk factor for pre-eclampsia based on ACOG and USPSTF guidelines
  • Willingness to adhere to aspirin therapy
  • Willingness to undergo 2h OGTT for serum collection in addition to survey collection, indirect calorimetry, body composition measures, neonatal measures, etc.
  • Gestational age at enrollment <18 weeks
  • Ability to speak, read, and communicate via English

Who cannot join

  • Type 2 Diabetes Mellitus
  • Type 1 Diabetes Mellitus
  • Current gestational diabetes mellitus
  • Current/active platelet disorder or bleeding diathesis (thrombocytopenia of any etiology, idiopathic thrombocytopenic purpura/ITP, thrombotic thrombocytopenic purpura/TTP, von Willebrand disease, etc.)
  • Thrombophilia
  • Current use of NSAID for other indication (indomethacin, ibuprofen, etc.)
Show all 14Show fewer
  • Current use of other immune-modulating agents and biologics (hydroxychloroquine, azathioprine, 6-mercaptopurine, IL-6 inhibitors, etc.)
  • Current or recent use of steroids
  • Current use of prophylactic or therapeutic anticoagulation
  • Medical contraindication to aspirin therapy
  • Molar pregnancy
  • Renal disease
  • Inability or unwillingness to give informed consent
  • Current psychiatric illness/social situation that would limit compliance with study requirements, as determined by the principal investigators

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Jill M Maples, PhD contact

865-305-9367

jmaples1@utmck.edu

Hana O El-Messidi, BS contact

865-305-5592

hel1@utmck.edu

United States1 site, 1 recruiting
  • University of Tennessee Graduate School of Medicine

    Knoxville, Tennessee, 37920

    Jill M Maples, PhD, 865-305-9367, jmaples1@utmck.edu

    Hana O El-Messidi, BS, 865-305-5592, hel1@utmck.edu

    Recruiting

Other trials in United States

About this study

Official title: Cardiometabolic Disease, Substrate Metabolism, and Abnormal Placental Pathology: a Multimodal Maternal-Fetal Study

This study's primary purpose is to determine the potential relationship between cardiometabolic disease, specifically insulin resistance (HOMA-IR), and maternal lipid oxidation.

Read the detailed description

Cardiometabolic disease such as pre-eclampsia (PreE) and gestational diabetes (GDM) affect close to 15% of pregnancies and are a major cause of maternal and neonatal morbidity and mortality. Much of the clinical data surrounding these disorders focuses on management during pregnancy and counseling regarding risks of continued cardiometabolic dysfunction after pregnancy. Data are much more limited regarding assessing and managing cardiometabolic dysfunction leading into or early in pregnancy. Furthermore, there are even less data describing metabolic dysfunction outside of GDM and PreE as relate to future cardiometabolic risk.

The standard of care of assessing metabolic dysfunction during pregnancy, specifically gestational diabetes, is a two-step glucose challenge approach. Outside of pregnant populations, metabolic dysfunction is assessed from a more holistic approach including assessment of insulin, lactate, triglycerides, HDL, LDL, VDRL, cholesterol and free fatty acids.

Data are currently lacking on substrate metabolism other than glucose in pregnancy. There are some data that describe maternal lipid metabolism in pregnancy, but most of these data focus on lipid metabolism as it relates to fetal growth and fat mass, but none describe substrate metabolism as it relates to development of maternal disease such as insulin resistance.

Additionally, the placenta is an extremely metabolically active organ that responds to changes in maternal stress. There is evidence in animal studies that the placenta can alter transportation of carbohydrates, lipids and amnio acids in response to changes in heat, undernutrition, hypoglycemia and glucocorticoid administration.

Traditional hypotheses regarding development of cardiometabolic disease in pregnancy surrounded topics such as abnormal placentation, dysfunctional spiral arteries and hormones such as human placental lactogen. Outside of pregnancy, studies have shown that endothelial dysfunction has been linked to cardiometabolic disease due to its role in regulating vascular tone and glycolysis. Furthermore, there is evidence to support that gestational diabetes is a risk factor for development of endothelial dysfunction; however, in vivo endothelial dysfunction in GDM is not well explored. While there are data that describe endothelial dysfunction in pregnancy as it relates to pre-eclampsia, most studies describe indirect measures of endothelial dysfunction using proteins such as VEGF, PLGF, and SFLT1.

The metabolic profiles in pregnant people at risk for cardiometabolic disease has not been explored heavily. By assessing both maternal substrate metabolism as well as placental function and pathology, we hope to better understand disease from the lens of not just the maternal but also the fetal and placental unit. Therefore, this study seeks to evaluate the relationship between substrate metabolism of pregnant individuals as it relates to their development of cardiometabolic disease in pregnancy with hopes for more translational research to design better targeted therapies.

Keywords
Cardiometabolic disease, Substrate metabolism, Preeclampsia, Gestational Diabetes, Insulin resistance, HOMA-IR, Lipid oxidation, Placental dysfunction, Chorangiosis
Medical subject headings
Pre-Eclampsia, Diabetes, Gestational, Insulin Resistance, Pregnancy Complications

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT07565727
Study groupRoleWhat they receive
Pregnant individuals at risk for cardiometabolic diseaseNot described

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Early Pregnancy Fasting Insulin (mIU/mL)

    Early pregnancy fasting insulin level (mIU/mL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  2. Early Pregnancy Homeostatic Model Assessment for Insulin Resistance

    Approximates early pregnancy insulin resistance.

    Measured: Calculated from fasting insulin and fasting glucose collected at the start of a single study visit between 12-18 weeks gestational age

  3. Early Pregnancy Fasting Lipid Oxidation Rate (g/min)

    Early pregnancy fasting lipid oxidation rate measures whole body lipid oxidation, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 12-18 weeks gestational age

  4. Late Pregnancy Fasting Insulin (mIU/mL)

    Late pregnancy fasting insulin level (mIU/mL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  5. Late Pregnancy Homeostatic Model Assessment for Insulin Resistance

    Approximates late pregnancy insulin resistance.

    Measured: Calculated from fasting insulin and fasting glucose collected at the start of a single study visit between 26-30 weeks gestational age

  6. Late Pregnancy Fasting Lipid Oxidation Rate (g/min)

    Fasting late pregnancy lipid oxidation rate measures whole body lipid oxidation, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 26-30 weeks gestational age

Secondary outcomes (22)
  1. Early Pregnancy Fasting Resting Metabolic Rate (kcal/day)

    Early pregnancy resting metabolic rate describes whole body caloric expenditure, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 12-18 weeks gestational age

  2. Early Pregnancy Fasting Resting Respiratory Quotient

    Early pregnancy resting respiratory quotient describes whole body caloric expenditure, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 12-18 weeks gestational age

  3. Early Pregnancy Fasting Carbohydrate Oxidation Rate (g/min)

    Early pregnancy fasting carbohydrate oxidation rate measures whole body carbohydrate oxidation, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 12-18 weeks gestational age

  4. Early Pregnancy Fasting Glucose (mg/dL)

    Early pregnancy fasting glucose level (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  5. Early Pregnancy Fasting Lactate (mmol/L)

    Early pregnancy fasting lactate level (mmol/L) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  6. Early Pregnancy Fasting Triglycerides (mg/dL)

    Early pregnancy fasting triglycerides level (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  7. Early Pregnancy Fasting High Density Lipoprotein (mg/dL)

    Early pregnancy fasting high density lipoprotein level (HDL) (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  8. Early Pregnancy Fasting Very Low Density Lipoprotein (mg/dL)

    Early pregnancy fasting very low density lipoprotein level (VLDL) (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  9. Early Pregnancy Fasting Low Density Lipoprotein (mg/dL)

    Early pregnancy fasting low density lipoprotein level (LDL) (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  10. Early Pregnancy Fasting Cholesterol (mg/dL)

    Early pregnancy fasting cholesterol level (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  11. Early Pregnancy Fasting Free Fatty Acids (mEq/L)

    Early pregnancy fasting free fatty acids (FFA) (mEq/L) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age

  12. Late Pregnancy Fasting Resting Metabolic Rate (kcal/day)

    Late pregnancy resting metabolic rate describes whole body caloric expenditure, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 26-30 weeks gestational age

  13. Late Pregnancy Fasting Resting Respiratory Quotient

    Late pregnancy resting respiratory quotient describes whole body caloric expenditure, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 26-30 weeks gestational age

  14. Late Pregnancy Fasting Carbohydrate Oxidation Rate (g/min)

    Late pregnancy fasting carbohydrate oxidation rate measures whole body carbohydrate oxidation, which is assessed using indirect calorimetry

    Measured: Measured at the start of a single study visit between 26-30 weeks gestational age

  15. Late Pregnancy Fasting Glucose (mg/dL)

    Late pregnancy fasting glucose level (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  16. Late Pregnancy Fasting Lactate (mmol/L)

    Late pregnancy fasting lactate level (mmol/L) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  17. Late Pregnancy Fasting Triglycerides (mg/dL)

    Late pregnancy fasting triglycerides level (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  18. Late Pregnancy Fasting High Density Lipoprotein (mg/dL)

    Late pregnancy fasting high density lipoprotein level (HDL) (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  19. Late Pregnancy Fasting Very Low Density Lipoprotein (mg/dL)

    Late pregnancy fasting very low density lipoprotein level (VLDL) (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  20. Late Pregnancy Fasting Low Density Lipoprotein (mg/dL)

    Late pregnancy fasting low density lipoprotein level (LDL) (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  21. Late Pregnancy Fasting Cholesterol (mg/dL)

    Late pregnancy fasting cholesterol level (mg/dL) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

  22. Late Pregnancy Fasting Free Fatty Acids (mEq/L)

    Late pregnancy fasting free fatty acids (FFA) (mEq/L) in venous blood

    Measured: Fasting, at the beginning of a single study visit between 26-30 weeks gestational age

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 May 2026
  2. Study start10 Dec 2025
  3. Primary completionAug 2026 (estimated)
  4. Study completionAug 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
50 participants (estimated)
Target duration
9 Months
IDs, dates and publications
ClinicalTrials.gov ID
NCT07565727
Sponsor's protocol ID
5483
Acronym
CAP
Status last verified
Jan 2026
First submitted
27 Apr 2026
Last updated
4 May 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Reasonable requests will be considered on a case-by-case basis.

Questions about this trial

What is this clinical trial studying?

An observational study of Preeclampsia and Gestational Diabetes Mellitus (GDM), run by University of Tennessee Graduate School of Medicine at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 4 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Jill M Maples, PhD (865-305-9367, jmaples1@utmck.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Early Pregnancy Fasting Insulin (mIU/mL) (time frame: Fasting, at the beginning of a single study visit between 12-18 weeks gestational age). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 May 2026.

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