Causal Relationship Between Inflammatory Cytokines and Polycystic Ovary Syndrome: A Bidirectional Mendelian Randomization Study

This study used bidirectional Mendelian randomization with Genome Wide Association Study data to examine the causal relationship between inflammatory cytokines and polycystic ovary syndrome (PCOS) in a cohort of 34,388 PCOS patients and 195,922 controls. It found that higher levels of interleukin-1-alpha (IL-1A) and oncostatin-M (OSM) are associated with an increased risk of developing PCOS, while higher levels of interleukin-7 (IL-7), interleukin-15 receptor subunit alpha (IL15RA), and C-X-C motif chemokine 11 (CXCL11) are associated with a decreased risk. The study suggests that inflammation contributes to PCOS but not vice versa, and targeting specific inflammatory factors like IL-1 could mitigate PCOS risk. However, the study's findings are limited by its focus on a European-only population, indicating a need for further research in diverse groups.