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DISPATCH: Decreasing Intervention Using sFlt-1/PlGF Applied to Chronic Hypertension (DISPATCH)

9 novembre 2026 mis à jour par: University of California, San Francisco

Decreasing Intervention Using sFlt-1/PlGF Applied to Chronic Hypertension (DISPATCH Trial): A Pilot, Open-label, Randomized Controlled Trial

This pilot study tests the feasibility of conducting an interventional study in pregnant people with chronic hypertension with interventional clinical management based on sFlt-1/PlGF. It will also collect data on time to delivery, the incidence of preterm delivery, and other maternal or neonatal complications, for a pivotal trial.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Description détaillée

Participants with chronic hypertension between 23+0 and 34+6 weeks presenting to triage for rule out superimposed preeclampsia. They will be randomly assigned to two groups at a 1:1 ratio, conceal or reveal, and will be tested with the sFlt-1/PlGF assay. In the conceal group, participants will have their blood tested but the results will not be returned to the participants or their clinical providers, and thus the participants will continue to receive routine clinical care in pregnancy. In the reveal group, the clinical team will be notified of the assay results (PlGF and sFlt-1 concentrations and ratio) and result status (normal <40 or abnormal using the cut-off ≥40) and will be encouraged to discharge patients with a normal result. The ultimate decision to admit or discharge will still be based on the decision making of the clinical team; if a patient with a normal result is admitted and/or delivered, the clinical team will be asked to record the reason(s) behind the decision(s). Repeat PlGF and sFlt-1 concentration and ratio testing will occur for participants who re-present to triage ≥7 days from the prior test, and on a weekly basis for participants who are admitted. For participants in the reveal group who have had an abnormal result, additional concentration and ratio testing will be performed but results will not be reported to the clinical team.

Type d'étude

Interventionnel

Inscription (Estimé)

74

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Sauvegarde des contacts de l'étude

Lieux d'étude

    • California
      • San Francisco, California, États-Unis, 94158
        • University of California, San Francisco

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Femelle

La description

Inclusion Criteria:

  • Age 18 and older

  • Singleton living pregnancy

  • Gestational age between 23+0 and 34+6 weeks gestation, confirmed by a fetal crown-rump length measurement in a first trimester ultrasound or by in vitro fertilization dates

  • Chronic hypertension, defined as:

    • At least 2 blood pressure measurements 140 systolic or 90 diastolic 4 hours apart diagnosed at less than 20 weeks 0 days of gestation and within 12 months of conception.
    • History or current use of anti-hypertensive medications for the indication of lowering blood pressure within 12 months prior to conception or prior to 20 weeks 0 days in the current pregnancy. Use during a prior pregnancy and through 12 weeks postpartum, or use for stage 1 chronic hypertension are not exclusions.
  • Evaluated in triage for worsening chronic hypertension, rule out preeclampsia due to:

    • Worsening blood pressures from baseline and/or development of severe range blood pressures
    • Preeclampsia associated symptoms: headache, vision changes, abdominal pain
    • New onset proteinuria or worsening proteinuria
    • Lab abnormalities suspicious for preeclampsia including anemia, signs of hemolysis, thrombocytopenia, increasing serum creatinine, elevated liver function tests
    • Any other concerning features of preeclampsia according to the evaluating clinician

Exclusion Criteria:

  • Hemolysis, elevated liver enzymes, low platelet syndrome (HELLP syndrome), pulmonary edema, eclamptic seizure, stroke, myocardial infarction, placental abruption, or heart failure.
  • Absent or reversed end-diastolic flow in the umbilical artery Doppler
  • Unable to consent
  • Major birth defect or chromosomal abnormality that may necessitate preterm birth for other reasons
  • Other pregnancy complication that may necessitate preterm birth (e.g., PPROM)
  • IV Heparin use within 24 hours of the lab draw
  • Exogenous PlGF-2 or PlGF-3 given for therapeutic use at a concentration higher than 100 pg/mL

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Diagnostique
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Comparateur placebo: Conceal arm

The clinical team will be blinded to assay results and will manage as per their usual clinical protocol.

Diagnostic testing with sFlt/PlGF assay at each obstetric emergency room or admission in which the participant is being evaluated for preeclampsia. Testing will occur at each evaluation or if the participant is admitted to the hospital, weekly.

Conceal arm: The clinical team will be blinded to assay results and will manage chronic hypertension as per their usual clinical protocol.

Expérimental: Reveal arm

The clinical team will receive qualitative assay results normal (sFlt-1/PlGF <40) or abnormal (sFlt-1/PlGF ³40)) and the ratio value and concentrations of PlGF and sFlt-1.

Diagnostic testing with sFlt/PlGF assay at each obstetric emergency room or admission in which the participant is being evaluated for preeclampsia. Testing will occur at each evaluation or if the participant is admitted to the hospital, weekly.

Reveal arm: the clinical team will receive qualitative assay results normal (sFlt-1/PlGF <40) or abnormal (sFlt-1/PlGF >=40).

  • If normal, the clinical team will be encouraged to manage the patient expectantly, with discharge home and routine outpatient surveillance or if the patient is admitted, to continue expectant management without delivery. If a patient with a normal result is admitted and/or delivered, the clinical team will be asked to record the reason(s) behind the decision(s).
  • If abnormal, the clinical team should consider superimposed preeclampsia and will manage per their usual clinical protocol. If a patient with an abnormal result is discharged, the clinical team will be asked to record the reason(s) behind the decision(s).

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Recruitment rate
Délai: At month 6

Number of participants enrolled per week

At month 6
Protocol adherence in the reveal arm
Délai: At month 6

What proportion of participants in the reveal arm adhered to the clinical algorithm of management based on the assay result.

At month 6

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Time until delivery using a time-to-event analysis
Délai: From date of randomization until the date of delivery

Assessing weeks from the initial enrollment in the trial to delivery

From date of randomization until the date of delivery
Delivery with superimposed preeclampsia with severe features.
Délai: At the date of delivery

The endpoint will be analyzed for different follow-up times including <35 weeks of gestation. Analysis will take into account the potentially diverging directions of the effect in the patient strata of ratio results (levels: "abnormal", "normal"; cut-off 40; assuming reduction of deliveries in the "normal" stratum and increase in the "abnormal" stratum due to improved risk stratification by the ratio), e.g. by using (a) regression modelling with interaction term study arm x ratio result, or (b) stratification of the analysis by ratio result.

At the date of delivery
Rate of preterm birth at <35 weeks
Délai: At month 6
At month 6
Rate of preterm birth at <37 weeks
Délai: At month 6
At month 6
Maternal admission rate
Délai: At month 6

1) defined as the number of participants admitted at least once in the antepartum period divided by the total number of participants in that arm of the trial and 2) defined as the number of participants admitted at least once in the postpartum period divided by the total number of participants in that arm of the trial

At month 6
Maternal admission days
Délai: Date of randomization to 6 weeks postpartum

Defined 1) randomization to delivery and 2) in the postpartum period up to 6 weeks

Date of randomization to 6 weeks postpartum
Maternal admission to the ICU
Délai: Date of randomization to 6 weeks postpartum

1) in pregnancy or 2) within 6 weeks postpartum

Date of randomization to 6 weeks postpartum
Severe maternal morbidity (with and without transfusion)
Délai: Date of randomization to 6 weeks postpartum

Severe maternal morbidity (without transfusion) is defined as the occurrence of at least one of the following during pregnancy, delivery, or in the first 6 weeks postpartum: acute myocardial infarction, aneurysm, acute renal failure, adult respiratory distress syndrome, amniotic fluid embolism, cardiac arrest or conversion of cardiac rhythm, disseminated intravascular coagulation, eclampsia, hemorrhagic or embolic stroke, pulmonary edema, severe anesthesia complication, sepsis, shock, sickle cell disease with crisis, air and thrombotic embolism, hysterectomy, temporary tracheostomy, mechanical ventilation

Date of randomization to 6 weeks postpartum
Gestational age at delivery
Délai: Date of delivery
Date of delivery
Birthweight
Délai: Date of delivery
Date of delivery
Birthweight percentile
Délai: Date of delivery
Date of delivery
Mode of delivery
Délai: Date of delivery
Date of delivery
Neonatal admission to the NICU
Délai: Date of delivery
Date of delivery
Days of neonatal admission to the NICU
Délai: Date of delivery to 6 weeks postpartum
Date of delivery to 6 weeks postpartum
Neonatal composite morbidity
Délai: Date of delivery to 6 weeks postpartum
  • Neonatal major morbidity as measured in pregnancy and up to 6 weeks postpartum is defined as the occurrence of at least one of the following: death (fetal or neonatal death through 28 days postpartum), hypoxic ischemic encephalopathy, intraventricular hemorrhage, cardiopulmonary resuscitation, necrotizing enterocolitis, persistent pulmonary hypertension, bronchopulmonary dysplasia, mechanical ventilation, seizure, sepsis, birth trauma (fracture, brachial plexus injury, facial palsy)
  • Neonatal minor morbidity as measured in pregnancy and up to 6 weeks postpartum is defined as the occurrence of at least one of the following: respiratory distress syndrome, hypoglycemia, meconium aspiration syndrome, and neonatal jaundice requiring phototherapy
Date of delivery to 6 weeks postpartum

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Les enquêteurs

  • Chercheur principal: Juan M Gonzalez Velez, MD PhD, University of California, San Francisco

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 janvier 2027

Achèvement primaire (Estimé)

1 juillet 2027

Achèvement de l'étude (Estimé)

1 juillet 2027

Dates d'inscription aux études

Première soumission

4 novembre 2026

Première soumission répondant aux critères de contrôle qualité

9 novembre 2026

Première publication (Réel)

13 novembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

13 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

9 novembre 2026

Dernière vérification

1 novembre 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • STUDY00000922

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Oui

produit fabriqué et exporté des États-Unis.

Oui

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .