Future research should aim to confirm the results of this preliminary study by involving a larger and more diverse cohort, reflective of the general population. This should encompass women from different geographic regions, ethnicities, and socioeconomic levels, with various medical backgrounds. Such comprehensive research would serve to validate the initial findings and adjust for any confounding factors. Longitudinal studies are essential for determining the consistency of changes in CBR expression over time and their value for PTB prediction. Exploring the influence of CBRs on PTB risk might reveal novel preventive and treatment strategies. Furthermore, investigating the interaction between CBRs and other well-known risk factors for PTB could result in the development of a comprehensive risk assessment model, hence improving the overall applicability and impact of our research findings on clinical practices and prenatal care strategies.