Maternal and Umbilical Cord Hormone Concentrations in Twin and Singleton Pregnancies
Public ClinicalTrials.gov record NCT00341263. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Study of Maternal and Umbilical Cord Hormone Concentrations in Monochorionic and Dichorionic Pregnancies
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study will examine levels of hormones, such as estrogen and testosterone, in maternal and umbilical cord blood to compare hormones between mothers who are having twins and mothers who are having one baby. It will investigate whether hormone levels in twin versus singleton pregnancies influence the babies' risk of developing breast, prostate, and testicular cancers later in life. Pregnant women 18 years of age and older who do not have preeclampsia, chronic hypertension, pre-pregnancy or gestational diabetes, thyroid disease, or other major pregnancy complications are eligible for this study. Participants will be recruited from the obstetrics and gynecology practice at the Dartmouth Hitchcock Medical Center in Lebanon, New Hampshire. Participants will have a blood sample drawn from their arm during their third trimester prenatal visit and again when they are admitted to the hospital for delivery. After the baby is born, a blood sample will be collected from the cut umbilical cord. Information about the pregnancy and delivery will be collected from the mother's medical chart, and information about the baby's size will be obtained from the baby's medical chart.
Study identification
- NCT ID
- NCT00341263
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 111 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years to 60 Years
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 20, 2003
- Primary completion
- Jun 30, 2009
- Completion
- Feb 18, 2020
- Last update posted
- Feb 20, 2020
2003 – 2020
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Darmouth-Hitchcock Medical Center | Hanover | New Hampshire | 03756 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00341263, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Feb 20, 2020 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00341263 live on ClinicalTrials.gov.