A Phase 1 interventional study of Caffeine citrate in Preterm Labor With Preterm Delivery, Premature Birth and Apnea of Prematurity, sponsored by Indiana University. Recruiting at 1 site in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-04.
Sponsored by Indiana University · Phase 1, Interventional, and Basic science
The goal of this study is to learn how a pregnant person's body processes caffeine and how much caffeine crosses the placenta to the baby. A small dose of caffeine will be given to each pregnant participant before delivery. Blood will be drawn to measure caffeine levels in the pregnant mother. Blood will also be taken from the placenta and from the newborn to measure caffeine levels. This data will be used to form a computer model of the metabolism of caffeine during pregnancy.
2,550 studies on the registry are indexed under Premature Birth; 500 are open to participants now.
This study's planned enrollment of 30 is below the median of 84 across 1,666 interventional studies indexed under Premature Birth.
Browse Premature Birth studies →Indiana University is the lead sponsor of 986 studies on the registry; 198 are open to participants now.
Of its 148 completed or terminated interventional studies of FDA-regulated products, 118 (80%) have results posted.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
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A single dose of caffeine citrate will be given intravenously within approximately 1 hour prior to delivery. Caffeine and metabolite levels will be measured from blood samples drawn pre-dose and post-dose in pregnant participants, from cord blood, and from the neonate.
Drug: Caffeine citrate
A single dose of 100 mg of caffeine citrate will be given to each pregnant participant.
Pharmacokinetics of caffeine in pregnancy
Caffeine and primary metabolite concentrations will be determined in maternal plasma samples. Caffeine, paraxanthine, theophylline, and theobromine will be analyzed by HPLC-MS/MS (Sciex 6500) by the Indiana University Simon Comprehensive Cancer Center (IUSCCC)Clinical Pharmacology Analytical Core Laboratory. Pharmacokinetic modeling will be supported by the Indiana Clinical and Translational Sciences Institute Pharmacometric Modeling and Simulation Program. This model will be utilized to predict the maternal dose of caffeine required to achieve therapeutic concentrations in the neonate at the time of delivery.
Time frame: 3 hours
Placental transfer of caffeine
Caffeine and primary metabolite concentrations will be determined from cord blood samples. Caffeine, paraxanthine, theophylline, and theobromine will be analyzed by HPLC-MS/MS (Sciex 6500) by the Indiana University Simon Comprehensive Cancer Center (IUSCCC) Clinical Pharmacology Analytical Core Laboratory. Maternal: cord ratios for caffeine and metabolites will be determined for each gestational age range to assess transplacental uptake and compared to predicted maternal: cord ratios determined using physiologically based pharmacokinetic (PBPK) models.
Time frame: 1 hour
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Studies of the drug tested here: Caffeine citrate