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Non Invasive Biomarkers to Identify Subjects at Risk for Preterm Delivery (PTMARKER)

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ClinicalTrials.gov Identifier: NCT00919412
Recruitment Status : Terminated (Original Principal Investigator, G. Ashmead, MD left the Institution)
First Posted : June 12, 2009
Last Update Posted : May 18, 2016
Information provided by (Responsible Party):
Genevieve Sicuranza, MD, Winthrop University Hospital

Brief Summary:

The goal of this study is to identify a non-invasive predictor or predictors that will increase the clinician's ability to identify patients with preterm labor (PTL) at risk for preterm delivery (PTD). Through these studies we also hope to reveal potential therapeutic targets in the prevention of prevention of preterm births.

The study hypothesis is that we can identify non-invasive predictors of PTL at risk for PTD.

Condition or disease
Preterm Birth

Detailed Description:

STUDY DESIGN This is a prospective study involving a cohort of pregnant subjects with pre-term labor. Maternal blood and cervical/vaginal fluid will be collected from consenting subjects with preterm labor. Repeat sampling of cervical fluid will occur as often as weekly until the time of delivery. Relevant clinical and demographic data will be recorded. Levels of prostaglandins (PG's), lipocalin-type prostaglandin D2 synthase (L-PGDS) and cytokines will be determined using ELISA. DNA will also be extracted from maternal blood for SNP analysis of cytokine genes. At the time of delivery, cord blood and placenta samples will be collected if logistically possible (during regular laboratory hours). To determine fetal levels of PG's, L-PGDS and cytokines in cord blood will be analyzed using ELISA. Placental samples will be used for in vitro studies aimed at investigating the placental regulatory pathways of cytokine and PG production. Placental samples will also be processed and embedded in paraffin for use in immunohistochemical studies in order to localize the expression of PG's and cytokines. Clinical delivery data will also be recorded.

Gender of Subjects. Only female subjects will be included.

Age of Subjects. The age of subjects will be restricted to 18-45 years.

Inclusion Criteria. Women with a diagnosis of preterm labor will be included in this study. Preterm labor will be diagnosed as

Six or more contractions per hour associated with one of the following:

  1. cervical dilation >= 2 cm
  2. cervical effacement > 80%
  3. documented changes in dilation or effacement

OR Cervical length less than 2.5 cm by ultrasound with or without contractions.

Exclusion Criteria. Multiple pregnancy, fetal anomalies, abruptio placenta, preeclampsia, cervical dilation greater than 4 cm, clinical signs of infection and vaginal bleeding.

Subject Capacity. All subjects included in this study will have the capacity to give informed consent.

Study Type : Observational
Actual Enrollment : 32 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Non-Invasive Biomarkers To Identify Subjects At Risks For Preterm Delivery
Study Start Date : June 2007
Primary Completion Date : September 2010
Study Completion Date : September 2010

Preterm delivery (< 37 weeks)
Term delivery (>=37 weeks)

Primary Outcome Measures :
  1. Preterm delivery [ Time Frame: Course of pregnancy ]

Biospecimen Retention:   Samples With DNA
Maternal blood Maternal cervical secretions Fetal umbilical cord blood Placenta

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Pregnant women ages 18-45 with a diagnosis of preterm labor

Inclusion Criteria:

  • Women with a diagnosis of preterm labor.

Exclusion Criteria:

  • Multiple pregnancy, fetal anomalies, abruptio placenta, preeclampsia, cervical dilation greater than 4 cm, clinical signs of infection and vaginal bleeding

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00919412

United States, New York
Winthrop-University Hospital
Mineola, New York, United States, 11501
Sponsors and Collaborators
Winthrop University Hospital
Principal Investigator: Graham G Ashmead, MD Winthrop University Hospital

Responsible Party: Genevieve Sicuranza, MD, Investigator, Winthrop University Hospital
ClinicalTrials.gov Identifier: NCT00919412     History of Changes
Other Study ID Numbers: 101436-3
First Posted: June 12, 2009    Key Record Dates
Last Update Posted: May 18, 2016
Last Verified: May 2016

Keywords provided by Genevieve Sicuranza, MD, Winthrop University Hospital:
Non Invasive Biomarkers Preterm Delivery

Additional relevant MeSH terms:
Premature Birth
Obstetric Labor, Premature
Obstetric Labor Complications
Pregnancy Complications