Differences in clinical outcomes between men with mosaic Klinefelter syndrome and those with non-mosaic Klinefelter syndrome.

Purpose: This study compared the clinical outcomes of men with Klinfelter syndrome based on karyotype.

Methods: The authors analyzed the outcomes of microdissection testicular sperm extraction (micro-TESE) performed on 57 patients with Klinfelter syndrome (KS) at our clinic.

Results: The average ages of the non-mosaic and mosaic KS groups were 32.