Birth of a healthy male after frozen thawed blastocyst transfer following intracytoplasmic injection of frozen thawed testicular spermatozoa from a man with nonmosaic Klinefelter's syndrome

We here report on a birth of a male, with normal karyotype, after frozen thawed blastocyst transfer following intracytoplasmic injection of frozen thawed testicular spermatozoa from an azoospermic 27-year-old man with nonmosaic Klinerfelter's syndrome. Testicular sperm were retrieved by percutaneous needle biopsy.