Science · Biology & genetics · published 2026-10-12 · via BioNews

UK doctors retransplant frozen testicular tissue in fertility first

A 19-year-old in the UK has received a transplant of his own testicular tissue, which had been frozen before chemotherapy and a bone marrow transplant. The tissue contains stem cells needed for sperm production, and his semen after treatment contained no sperm. Doctors hope the procedure will restore fertility, though IVF or ICSI may still be required; a similar Belgian case has already produced mature sperm.

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A UK teenager is the first in the country to receive his own testicular tissue back after it was frozen before chemotherapy and a bone marrow transplant. The tissue was stored three years earlier and contains sperm-producing stem cells. Semen testing after treatment found no sperm. Clinicians in Edinburgh performed the transplant, and results may become clear over coming months.

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This summary is Al-enhanced to contain extended analysis and broader social context. The original is {NAME); the linked article is the authoritative source. Original headline: “First UK transplant of frozen testicular tissue.” Browse more stories.