Microdissection testicular sperm extraction in five Japanese patients with non‐mosaic Klinefelter's syndrome

Abstract

CasesMicrodissection testicular sperm extraction (micro‐TESE) was performed on five Japanese men with non‐mosaic Klinefelter's syndrome (KS) and non‐obstructive azoospermia in the authors' department. Here is reported the operative results and partner's clinical course for two cases where spermatozoa could be acquired. Also encountered was a man with non‐mosaic KS with the partial deletion of azoospermia factor (AZF)b. Because this is rare, it is reported in detail in the context of the previous literature. This case series describes the first experience of micro‐TESE by gynecologists in the current department.OutcomeThe egg collection date was adjusted to the micro‐TESE day by using the modified ultra‐long method. Intracytoplasmic sperm injection (ICSI) was implemented for two men whose spermatozoa were acquired by micro‐TESE, with these progressing to the blastocyst stage. Subsequently, one case conceived after the transfer of fresh embryos and a healthy baby was delivered. However, spermatozoa could not be retrieved from the man with non‐mosaic KS who was harboring the partial deletion of AZFb.ConclusionThese findings suggest that ovulation induction by using the modified ultra‐long method with micro‐TESE and ICSI on the same day represents an effective treatment option for men with non‐mosaic KS. As there are cases where AZF deletion is recognized among patients with non‐mosaic KS, screening before micro‐TESE is strongly recommended.

The Klinefelter Syndrome and Testicular Sperm Retrieval Outcomes

“…There were 7 reports with ≥50 KS cases (SRR of 20, 28, 33, 43, 47, 57, and 66%) [ 167 , 177 , 180 , 181 , 182 , 185 ], of which 2 cases presented an SRR of more than 50% (57, 66%) [ 167 , 177 ]. The other 11 KS cases evidenced SRRs ranging from 17% [ 191 ] to 40–74% [ 166 , 169 , 179 , 192 , 208 , 217 , 219 , 220 ], with 2 cases displaying a 100% SRR, one with 2 patients [ 200 ] and the other with 9 patients [ 216 ].…”