Lower serum AMH concentration is correlated with serum IgG1 decreased in the infertile woman: A real-world retrospective study

Objectives In this real-world approach, we examined the serum Anti-Mullerian Hormone (AMH) level and the relationship with serum IgG subclass in the infertile women. Methods A total of 574 female participants were recruited for this study. The serum AMH, IgG subclass(IgG1, IgG2, IgG3, IgG4) and immunoglobulin (Ig) G,IgM,IgA,IgE as well as complement C-3, C-4 were analyzed. The difference in serum AMH level was assessed according categorized as above or below the median of the ratio of serum IgG subclass(IgG1, IgG2, IgG3, IgG4) to total IgG (R-IgG subclass/IgG). Results The serum AMH level of the low R-IgG1/IgG group is significantly decreased than that high R-IgG1/IgG group (p < 0.05). The Spearman correlation analysis showed that the serum AMH level was significantly negatively correlated with age and significantly positively correlated with serum IgG1 levels respectively (p < 0.05). GLMMs multivariate model showed that after adjusting the covariate and possible mixed factors including age, serum immunoglobulin, complement C-3 and C-4, the serum AMH level was significantly positively correlated with IgG1 level (p < 0.01). Conclusions Decreased serum IgG1 may significantly affect the ovarian reserve function of women. Confirmation of this association and elucidation of its underlying mechanisms are needed to place these results in a clinical perspective.