Autologous Transplantation of Frozen Testicular Tissue to Restore Fertility in Adult Men

What this Trial Is About

Researchers are investigating autologous testicular tissue transplantation as a method to restore fertility in men who had their testicular tissue frozen as prepubertal boys due to cancer or hematological diseases. This approach is considered when no sperm suitable for intra-cytoplasmic sperm injection ICSI is found in the ejaculate despite cryopreservation efforts. The goal is to restore spermatogenesis and fertility by transplanting the preserved tissue back into the patient. The study involves transplanting autologous testicular tissue that was previously frozen during childhood. Men who return for transplantation will first undergo semen and blood analyses. If no usable sperm are found, the transplantation procedure will be performed. Graft removal and histological studies will occur 12 months after grafting. Participants will be followed up with imaging, hormonal, biomarker, and complication assessments at 3, 6, 9, 12, and 15 months post-grafting. Participants will be monitored closely for up to 15 months after transplantation to assess restoration of sperm production and overall fertility. Evaluations include semen analysis for sperm presence in the graft, imaging, hormonal studies, and biomarker assessments at specified intervals. Safety and potential complications will also be tracked. The study aims to provide important information on the feasibility and outcomes of this novel fertility restoration method.

Autologous Testicular Tissue Transplantation