An observational study in Maternal Health, Child Health and Pregnancy Complications, sponsored by Johns Hopkins Bloomberg School of Public Health. Recruiting at 1 site in United States. Open to participants aged 0 Years to 50 Years. Per ClinicalTrials.gov, last updated 2026-09-11.
Sponsored by Johns Hopkins Bloomberg School of Public Health · Observational
Among 127 studies in Pregnancy Complications with a site in United States — 39 open to participants now, 47 under way, 1 of them phase 3. Pregnancy Complications · United States.
Among the 127 studies in Pregnancy Complications with a site in United States, this one is the 5th largest by planned enrollment of the 61 observational ones, is one of 3 that started in 1998, is one of 61 observational ones, reaches primary completion later than 36 of the 46 other live ones, and was the 36th registered.
411 studies on the registry are indexed under Pregnancy Complications; 113 are open to participants now.
This study's planned enrollment of 24,000 is above the median of 400 across 198 observational studies indexed under Pregnancy Complications.
Browse Pregnancy Complications studies →39 of the 127 studies in Pregnancy Complications with a site in United States are open now, in 12 countries. Each count lists the studies.
Of the 92 Pregnancy Complications studies recruiting now, 44 (48%) set no upper age limit and 45 (49%) stop at 75 or younger; 22 take children under 18; 35 take healthy volunteers.
This study: 0 Years to 50 Years · all sexes · no healthy volunteers.
The full table on the hub →127 studies; the count open now beside each. This study's row is marked.
First in 1995; this study’s year is marked. 3 started in 1998.
Median enrollment 96 across the 66 interventional studies, 477 across the 61 observational. Of the 69 that completed or were terminated, 19 (28%) have results posted.
13 of 127 have an industry lead sponsor. The 10 most frequent:
Johns Hopkins Bloomberg School of Public Health is the lead sponsor of 371 studies on the registry; 42 are open to participants now.
Of its 5 completed or terminated interventional studies of FDA-regulated products, 3 (60%) have results posted.
Johns Hopkins Bloomberg School of Public Health has 3 studies filed under Pregnancy Complications — fewer than ten, so there is no comparison to draw.
20 of the studies in Pregnancy Complications with a site in United States that are under way reach primary completion within a year, 1 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT05552053Phase 3Cedars-Sinai Medical CenterResources, Inspiration, Support and Empowerment (RISE) for Black Pregnant Women | 2026-12-31 |
| NCT04544462Genomic Prediction Inc.ANXA5 M2 Haplotyping in IVF Patients and Embryos | 2026-11 |
| NCT06529042Mount Sinai Hospital, CanadaSCRIPT: Sickle Cell Risk in Pregnancy Tool | 2026-12 |
| NCT06026969Children's National Research InstitutePregnancy and Early Neurodevelopmental Outcomes Following In Utero Lyme Disease Exposure | 2026-12 |
| NCT06790043Albany Medical CollegeImpact of Patient Selected Visual Art in the Hospital Room During Antepartum Admission on Hospital Satisfaction Scores and Patient Experience | 2026-12 |
Among the 127 studies in Pregnancy Complications with a site in United States, from their registry updates:
Early life exposures may lead to adverse effects on health in later life. The Boston birth Cohort study is designed to study a broad array of early life factors and their effects on maternal and child health outcomes across the life course.
Any woman admitted to the Labor and Delivery floor at the Boston Medical Center (BMC) who delivers a singleton live infant and meets our case (gestational age \<37 weeks or birthweight \<2,500 grams) or control (full term birth with birthweight >2,500 grams) criteria will be eligible.
Postnatal follow-up of enrolled mother-child pair is conducted from birth to age 21 years.
The Boston Birth Cohort has high-quality biospecimen collection, and comprehensive epidemiological, clinical, and environmental exposure data via standardized questionnaire interview, measurements, and review of the electronic medical records.
US, predominantly urban, multi-ethnic population.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Participants with Pregnancy complications - including hypertensive disorders and gestational diabetes
hypertensive disorders during pregnancy, gestational diabetes
Time frame: At birth
Birth outcomes - number of participants with preterm births
Birth outcomes are examined - preterm birth.
Time frame: At birth
Birth outcomes - birth weight in grams (g)
Birth outcomes are examined - birth weight (g)
Time frame: At birth
Child health outcomes - number of participants overweight or obese
overweight or obesity
Time frame: From birth to 21 years
Maternal health outcomes - number of participants with maternal diabetes
maternal diabetes
Time frame: After delivery to 21 years
child health outcome - systolic and diastolic blood pressure
blood pressure (mmHg)
Time frame: from birth to 21 years
child health outcome - participants with neuro-developmental disorders including autism and ADHD
neuro-developmental disorders including autism and ADHD
Time frame: from birth to 21 years
child health outcome - number of participants with asthma
asthma
Time frame: from birth to 21 years
Plan to share: No
Started Oct 1998 (actual). Primary completion is estimated for Dec 2028, 362 months after the start.
Of 113 non-industry observational studies under Pregnancy Complications, half reached primary completion within 60 months of starting (the median), counting those still running; a quarter within 30 and three quarters within 201. This study's planned 362 months is above that.
Counting every sponsor, half of 121 studies reached it within 60 months; a quarter within 30 and three quarters within 151.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
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Johns Hopkins Bloomberg School of Public Health →