Guangzhou Preterm and Term Birth Cohort Study

The Guangzhou Preterm-Term Birth Cohort (GPTBC) is a prospective observational study of how early-life nutrition, environmental exposures, and family factors relate to the health and development of preterm and term infants and their mothers. Mother-infant pairs are followed from birth to 24 months. Researchers use questionnaires and biological samples to study human milk, microorganisms in the infant gut, physical growth, development, and allergic diseases, and whether these relationships differ between preterm and term infants. Findings may inform nutrition and health strategies for infants born at different gestational ages.

NCT Number	NCT07756177
Lead Sponsor	Sun Yat-sen University Collaborators: The Third Affiliated Hospital of Guangzhou Medical University
Conditions	Preterm Birth, Neurodevelopmental Disorders, Overweight, Obesity, Allergic Diseases
Enrollment	200 participants
Start Date	2023-11-21
Primary Completion	2026-12-31 (estimated)
Study Completion	2026-12-31 (estimated)
Updated on ClinicalTrials.gov	2026-08-10