Blood markers (sFlt-1/PlGF, sEng, OPG) for diagnosing and monitoring preeclampsia

Evaluation of sFlt-1/PlGF Ratio, Osteoprotegerin (OPG) and Soluble Endoglin (sEng) as Predictive Biomarkers in the Diagnosis and Treatment Evaluation of Preeclampsia

Observational University of Thi-Qar · NCT07349277

This study will test whether three blood markers—the sFlt-1/PlGF ratio, soluble endoglin (sEng), and osteoprotegerin (OPG)—can help diagnose and track preeclampsia in pregnant women between 20 and 36 weeks of gestation.

Quick facts

Study typeObservational
Enrollment120 (estimated)
Ages18 Years to 45 Years
SexFemale
SponsorUniversity of Thi-Qar Academic / other
Locations1 site (Nasiriyah, Dhi Qar)
Trial IDNCT07349277 on ClinicalTrials.gov

What this trial studies

This observational cohort will enroll pregnant women at 20–36 weeks and collect blood samples to measure the sFlt-1/PlGF ratio, sEng, and OPG. Biomarker levels will be compared with clinical signs (blood pressure, proteinuria, and other maternal organ dysfunction) and timing of any preeclampsia diagnosis. Participants will be followed through delivery to record maternal and perinatal outcomes and treatments received. The aim is to see if these markers improve diagnostic accuracy or monitoring compared with standard clinical criteria.

Who should consider this trial

Good fit: Pregnant women aged 18–45 years between 20 and 36 weeks of gestation who attend the study antenatal clinic and do not have the listed exclusion conditions are ideal candidates.

Not a fit: People with chronic hypertension, renal disease, diabetes mellitus, multiple gestation, or autoimmune disorders were excluded and are unlikely to benefit from the findings of this protocol.

Why it matters

Potential benefit: If successful, these biomarkers could enable earlier and more accurate diagnosis and monitoring of preeclampsia, helping clinicians intervene sooner to reduce maternal and fetal complications.

How similar studies have performed: The sFlt-1/PlGF ratio has been validated in multicenter work (for example PROGNOSIS) as a strong predictor of preeclampsia, while evidence for sEng and OPG is promising but less conclusive.

Eligibility criteria

Show full inclusion / exclusion criteria
IInclusion Criteria:

* Pregnant women between 20 and 36 weeks of gestation
* Age between 18 and 45 years
* Attending the antenatal clinic at the study site

Exclusion Criteria:

* Chronic hypertension
* Renal disease
* Diabetes mellitus
* Multiple gestations
* Autoimmune disorders

Where this trial is running

Nasiriyah, Dhi Qar

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions PreeclampsiaGestational HypertensionHypertensive Disorders of PregnancysFlt-1/PlGF ratioSoluble EndoglinOsteoprotegerinAngiogenesisPlacental Dysfunction
Last reviewed 2026-06-10 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.