Health · Medical Research · 7 hrs ago
UK doctors transplant frozen testicular tissue to try to restore fertility
Doctors in Edinburgh transplanted tissue from a 19-year-old man’s testicle in August 2026.
The tissue had been frozen in 2023, before intensive chemotherapy for a serious blood disorder, which could permanently damage fertility.
Tests later found no sperm in his semen, so doctors used the stored tissue in an experimental attempt to restart sperm production.
The approach may help boys who have not reached puberty, because they cannot yet freeze sperm before medical treatment.
Their immature testicular tissue contains cells that could develop into sperm after puberty.
In eight months, the team plans to remove and examine part of the transplanted tissue, but the procedure does not guarantee the man will be able to have children.
Researchers must also establish that any sperm produced can be used safely in assisted reproduction and, for patients with cancer, check that stored tissue contains no cancer cells.
A 19-year-old in Edinburgh received a transplant of his own frozen testicular tissue in August 2026 in an experimental attempt to restore sperm production.
The tissue had been preserved in 2023 before he underwent a bone marrow transplant and high-dose chemotherapy for a serious blood disorder.
Doctors said tests three years later found no sperm in his semen.
The procedure was the first of its kind in the United Kingdom and the second known worldwide, according to Infobae.
The team plans to examine part of the transplanted tissue in eight months to check whether sperm production has resumed.
- Who
- A 19-year-old patient in Edinburgh received the transplant. His identity has been kept confidential.
- What
- Doctors reimplanted part of his own frozen testicular tissue in an experimental attempt to restore sperm production.
- When
- The transplant took place in August 2026.
- Where
- Edinburgh, United Kingdom.
- Why
- High-dose chemotherapy could irreversibly affect his fertility, and tests found no sperm in his semen.
This story does not have two clearly opposing sides.
Edinburgh's testicular tissue preservation programme began with support from Children with Cancer UK.
The patient preserved a sample of testicular tissue before a bone marrow transplant and high-dose chemotherapy.
Tests confirmed that the patient had no sperm in his semen.
Doctors reimplanted part of his preserved tissue.
The team plans to remove and analyse part of the implanted tissue.
- Patient
- 19-year-old from Edinburgh
- Procedure
- First of its kind in the United Kingdom; second known worldwide
- Tissue preserved
- 2023
- Transplant
- August 2026
- Planned tissue analysis
- In eight months
- Edinburgh programme
- More than 1,200 patients in the UK and over 3,100 worldwide have stored samples
What people are saying
I always wanted to have children of my own, but I started to accept that perhaps it would not be possible.
This procedure gave me real hope for the future.
Sources
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