TPO and Infertility: The mother had the following characteristics: 35 years old, weight 65 kg and height 1.68 m, with a 2.5-year period of infertility due to a tubal factor; FF of 4% and a PPV of 76.5%; first βhCG of 795 IU/L and second βhCG of 1,736 IU/L; FSH of 6.6 IU/L, LH of 8.6 IU/L, TSH of 2.68 mIU/L, anti-TPO of <9 IU/mL, anti-TG of <10 IU/mL, and AMH of 6.69 ng/mL; short protocol implemented with rFSH, eight days of ovulation, amount of gonadotropins 1,575 IU, E2 on the day of hCG 3,299 pg/mL, 11 oocytes harvested, 10 oocytes fertilized, two embryos transferred, on day five blastocysts.