Elevated antithyroid peroxidase antibodies indicating Hashimoto's thyroiditis are associated with the treatment response in infertile women with polycystic ovary syndrome.

In infertile women suffering from polycystic ovary syndrome (PCOS), anti-thyroid peroxidase antibodies values exceeding the upper level of normal were found in significantly more clomiphene citrate resistant patients compared clomiphene citrate responders and metformin responders. Thus, elevated antiTPO levels are associated with poor treatment response in infertile women who suffer from PCOS.