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Type 1 DiabetesPREEATH-T1DNCT07479329

Estimated Risk of Preeclampsia in the First Trimester and Its Association With Subclinical Atherosclerosis and Cardiovascular Risk in Women With Type 1 Diabetes

An observational study of Type 1 Diabetes and Preeclampsia, run by Institut d'Investigacions Biomèdiques August Pi i Sunyer at 2 sites in Spain.

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 multicenter observational cohort study aims to evaluate whether estimated first-trimester risk of preeclampsia (PE) is associated with subclinical atherosclerosis, cardiovascular risk profile, and cardiovascular events in women with type 1 diabetes (T1D) at least 3 years after pregnancy. Read more about this study

Who is it for?
Ages 18 years and older, women only
How many people
1,300 participants
Where
2 sitesSpain
Study dates
10 Apr 2026to 30 Apr 2028
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 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Study population: Women with type 1 diabetes followed in endocrinology clinics who had at least one previous pregnancy with documented first-trimester preeclampsia screening.

Who may be able to join

  • Age ≥ 18 years
  • Confirmed diagnosis of type 1 diabetes
  • At least one prior pregnancy with first-trimester preeclampsia screening (<14 weeks gestation)
  • ≥3 years since last pregnancy

Who cannot join

  • Previous multiple pregnancy
  • Cardiovascular disease before pregnancy (coronary heart disease, stroke/TIA, peripheral artery disease, heart failure)
  • Active pregnancy at time of evaluation
  • Alcohol or substance dependence (except nicotine/caffeine) in the last 3 years
  • Active severe psychiatric disease, dementia, severe disability, or reduced life expectancy

Trial locations and contacts

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

Verónica Perea, MD, PhD contact

+34 93 736 50 50

vperea@mutuaterrassa.cat

Antonio J. Amor, MD, PhD contact

+34932279846

ajamor@clinic.cat

Spain2 sites, 2 recruiting
  • Hospital Clínic Barcelona

    Barcelona, Barcelona, 08036

    Recruiting
  • Hospital Universitari Mútua Terrassa

    Terrassa, Terrassa, 08221

    Not yet recruiting

Other trials in Spain

About this study

This multicenter observational cohort study aims to evaluate whether estimated first-trimester risk of preeclampsia (PE) is associated with subclinical atherosclerosis, cardiovascular risk profile, and cardiovascular events in women with type 1 diabetes (T1D) at least 3 years after pregnancy.

Women with T1D and at least one prior pregnancy with documented first-trimester PE screening will be classified as high or low PE risk according to validated multivariable algorithms. The presence of carotid plaques, cardiometabolic risk factors, and incident cardiovascular events will be assessed during a study visit.

Read the detailed description

Preeclampsia (PE) is associated with increased long-term cardiovascular disease (CVD) risk. Women with type 1 diabetes (T1D) are at particularly high risk of both obstetric and cardiovascular complications.

Although clinical PE has been associated with subclinical carotid atherosclerosis and future cardiovascular events in women with T1D, it is unknown whether estimated first-trimester PE risk identifies a subgroup at increased long-term cardiovascular risk, regardless of the development of clinical PE.

Participants will be women with T1D followed in endocrinology clinics across Spain. Eligible participants must have undergone first-trimester PE screening (<14 weeks gestation) in at least one pregnancy and be at least 3 years from their last delivery.

The primary exposure variable is first-trimester estimated PE risk (high vs low). Outcomes include subclinical carotid atherosclerosis, cardiometabolic risk profile, and incident cardiovascular events. Secondary outcomes include glycemic metrics from continuous glucose monitoring, cardiovascular health score (Life's Essential 8), patient-reported outcomes, and the effectiveness of aspirin in preventing clinical PE.

Data will be collected in a single study visit using medical records, physical examination, validated questionnaires, and carotid ultrasound (in centers with availability).

Keywords
Type 1 Diabetes, Preeclampsia, Preeclampsia Risk, Preclinical carotid atherosclerosis, Carotid ultrasonography, Cardiovascular risk, Cardiovascular disease
Medical subject headings
Diabetes Mellitus, Type 1, Pre-Eclampsia, Cardiovascular Diseases

What participants receive

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

Study groups in NCT07479329
Study groupRoleWhat they receive
High Estimated First-Trimester Preeclampsia RiskWomen with type 1 diabetes classified as high risk for preeclampsia during first-trimester screening in at least one prior pregnancy.
Low Estimated First-Trimester Preeclampsia RiskWomen with type 1 diabetes classified as low risk for preeclampsia during first-trimester screening in at least one prior pregnancy.

What is being measured

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

  1. Number of carotid plaques

    Presence of focal carotid plaque defined as focal wall thickening ≥1.5 mm detected by standardized 2D carotid ultrasound.

    Measured: At study visit (≥3 years postpartum)

  2. Hemoglobin A1c (HbA1c)

    HbA1c measured at study visit

    Measured: At study visit (≥3 years postpartum)

  3. Lipid profile

    Total cholesterol, triglycerides, HDL-cholesterol and Lipoprotein(a) measured directly. LDL-cholesterol estimated using the Friedewald formula.

    Measured: At study visit (≥3 years postpartum)

  4. Blood pressure

    Systolic blood pressure and diastolic blood pressure.

    Measured: At study visit (≥3 years postpartum)

  5. Body mass index

    Calculated as weight (in kg) / height (in meters) ^2

    Measured: At study visit (≥3 years postpartum)

  6. Diabetic-related chronic microvascular complications

    Defined as diabetic retinopathy, chronic kidney disease or diabetic neuropathy

    Measured: From the last pregnancy to the study visit (≥3 years postpartum)

  7. Incident cardiovascular events

    Composite of coronary artery disease, cerebrovascular disease, peripheral artery disease, or heart failure occurring between last pregnancy and study evaluation.

    Measured: From last pregnancy to study visit (minimum 3 years)

Secondary outcomes (10)
  1. Carotid intima-media thickness

    Measured by 2D ultrasonography

    Measured: At study visit (≥3 years postpartum)

  2. Clinical diagnosis of preeclampsia in any pregnancy

    Preeclampsia diagnosis will follow the international criteria (Obstet Gynecol. 2020;135(6):e237-e260)

    Measured: At study visit (≥3 years postpartum)

  3. Ambulatory glucose profile (continuous glucose monitoring)

    Time-in-range (%), Time-below-range (%), Time-above-range (%), Glucose management indicator (%), Coefficient of variation (%), mean glucose (mg/dL)

    Measured: Three months prior to study visit

  4. Cardiovascular Health Score

    Assessed using the American Heart Association (AHA) Life's Essential 8. This score ranges from 0 to 100, with higher values indicating better cardiovascular health.

    Measured: At study visit (≥3 years postpartum)

  5. Patient-reported outcomes. Hypoglycemia Fear Survey (HFS)

    Using the Spanish version of the scale (Tasende C et al. Endocrinol Diabetes Nutr 2018;65:287-296). The score ranges from 24 to 120, with higher values indicating more fear to hypoglycemia.

    Measured: At study visit (≥3 years postpartum)

  6. Patient-reported outcomes. Clarke Score

    Using the Spanish version of the scale (Jansà M et al. Med Clin 2015;145:511-516). The score ranges from 0 to 7, with higher values indicating less awareness to hypoglycemia.

    Measured: At study visit (≥3 years postpartum)

  7. Patient-reported outcomes. Diabetes Quality of Life questionnaire (DQoL)

    Using the Spanish version of the scale (Millán MM et al. Endocrinol Nutr. 2002;49:2-8). Higher values indicates better quality of life.

    Measured: At study visit (≥3 years postpartum)

  8. Patient-reported outcomes. Pittsburgh Sleep Quality Index (PSQI)

    Using the Spanish version of the scale (Royuela A, Macías JA. Psiquis. 1997;18:337-343). The total score ranges from 0 to 21, with a score of 5 or higher indicating poor sleep quality.

    Measured: At study visit (≥3 years postpartum)

  9. Patient-reported outcomes. Diabetes Distress Scale (DDS)

    Reference: Fisher L et al. J Diabetes Complications 2015;29(4):572-7. Higher scores indicate greater levels of diabetes-related distress.

    Measured: At study visit (≥3 years postpartum)

  10. Patient-reported outcomes. Problem Areas in Diabetes scale (PAID)

    Using the Spanish version of the scale (Beléndez M et al. Diabetes Research and Clinical Practice. 2014;106: e93-e95). The total score ranges from 0 to 100, with higher scores indicating poor quality of life.

    Measured: At study visit (≥3 years postpartum)

Timeline

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

  1. First posted18 Mar 2026
  2. Study start10 Apr 2026
  3. Primary completion30 Apr 2028 (estimated)
  4. Study completion30 Apr 2028 (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
Retrospective
Enrolment
1,300 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07479329
Sponsor's protocol ID
P/25-183
Acronym
PREEATH-T1D
Status last verified
Nov 2026
First submitted
3 Mar 2026
Last updated
5 Nov 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data (IPD) will not be shared due to data protection and confidentiality restrictions under the European Union General Data Protection Regulation (EU GDPR 2016/679) and Spanish Organic Law 3/2018 on Personal Data Protection. Although data collected in this study will be coded, the combination of detailed clinical, obstetric, and cardiovascular variables in a relatively specific population (women with type 1 diabetes and prior pregnancy) may pose a potential risk of re-identification. Furthermore, participants provide informed consent for use of their data exclusively for the purposes of this research project and related ethically approved analyses. Data sharing beyond these conditions is not covered by the approved consent framework. Aggregated results will be made publicly available through scientific publications and conference presentations.

Publications

  • Mesa A, Puig-Jove C, Pane A, Vinagre I, Lopez-Quesada E, Meler E, Alonso-Carril N, Quiros C, Amor AJ, Perea V. Preeclampsia as an independent predictor of atherosclerosis progression in women with type 1 diabetes: a 5-year prospective study. Cardiovasc Diabetol. 2025 Apr 9;24(1):160. doi: 10.1186/s12933-025-02719-3.

    PubMed 40205402
  • Perea V, Vinagre I, Seres-Noriega T, Vinals C, Mesa A, Pane A, Milad C, Esmatjes E, Conget I, Gimenez M, Amor AJ. Impact of Preeclampsia and Parity on Sex-based Discrepancies in Subclinical Carotid Atherosclerosis in Type 1 Diabetes. J Clin Endocrinol Metab. 2024 Aug 13;109(9):e1759-e1767. doi: 10.1210/clinem/dgad755.

    PubMed 38149646
  • Amor AJ, Vinagre I, Valverde M, Alonso N, Urquizu X, Meler E, Lopez E, Gimenez M, Codina L, Conget I, Barahona MJ, Perea V. Novel glycoproteins identify preclinical atherosclerosis among women with previous preeclampsia regardless of type 1 diabetes status. Nutr Metab Cardiovasc Dis. 2021 Nov 29;31(12):3407-3414. doi: 10.1016/j.numecd.2021.08.041. Epub 2021 Aug 26.

    PubMed 34663538
  • Amor AJ, Vinagre I, Valverde M, Urquizu X, Meler E, Lopez E, Alonso N, Pane A, Gimenez M, Codina L, Conget I, Barahona MJ, Perea V. Nuclear magnetic resonance-based metabolomic analysis in the assessment of preclinical atherosclerosis in type 1 diabetes and preeclampsia. Diabetes Res Clin Pract. 2021 Jan;171:108548. doi: 10.1016/j.diabres.2020.108548. Epub 2020 Nov 22.

    PubMed 33238177
  • Amor AJ, Vinagre I, Valverde M, Urquizu X, Meler E, Lopez E, Quiros C, Gimenez M, Codina L, Conget I, Barahona MJ, Perea V. Nuclear magnetic resonance lipoproteins are associated with carotid atherosclerosis in type 1 diabetes and pre-eclampsia. Diabetes Metab Res Rev. 2021 Jan;37(1):e3362. doi: 10.1002/dmrr.3362. Epub 2020 Jul 2.

    PubMed 32515046
  • Amor AJ, Vinagre I, Valverde M, Pane A, Urquizu X, Meler E, Lopez E, Quiros C, Gimenez M, Codina L, Conget I, Barahona MJ, Perea V. Preeclampsia Is Associated With Increased Preclinical Carotid Atherosclerosis in Women With Type 1 Diabetes. J Clin Endocrinol Metab. 2020 Jan 1;105(1):dgz031. doi: 10.1210/clinem/dgz031.

    PubMed 31529047

Questions about this trial

What is this clinical trial studying?

An observational study of Type 1 Diabetes and Preeclampsia, run by Institut d'Investigacions Biomèdiques August Pi i Sunyer at 2 sites in Spain.

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 4 inclusion and 5 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 5 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Spain. 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 Verónica Perea, MD, PhD (+34 93 736 50 50, vperea@mutuaterrassa.cat), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of carotid plaques (time frame: At study visit (≥3 years postpartum)). The study lists 7 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07479329, which also lists 6 linked publications.

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 5 Nov 2026.

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