Frozen ovarian tissue may help cancer survivors have babies
NCT ID NCT05830929
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study offers young female cancer patients the chance to freeze a piece of their ovary before starting cancer treatment. After they recover, if their ovaries stop working, doctors can thaw and re-implant the tissue to try to restore fertility. The goal is to help these women have children later in life. The study will track surgical safety and pregnancy rates in 100 participants.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Ovarian tissue freezing and re-implantation
- What this could lead to
- If successful, this procedure could help young female cancer survivors restore their fertility and have biological children after cancer treatment.
- What could go wrong
- This is an early-stage procedure with limited data on pregnancy rates. Surgical complications are possible, and not all patients may regain fertility. The study is small (100 participants) and results may not apply to everyone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2023
- Expected to finish
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Dec 2043
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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1 month to 35 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients aged from 0-35 years old and diagnosed with cancer e.g., leukaemia, myeloproliferative or myelodysplastic diseases, lymphoma, bone tumours, neurological neoplasms and sarcoma, Paediatric bone marrow transplant patients * Patients with any illness or who will undergo any type of treatment that may cause irreversible damage to their fertility, such as extensive abdominal surgery, high toxicity medication and treatments; * Patients suffering from hormone-sensitive malignancies who will undergo medical treatment, such as radiotherapy and chemotherapy that is liable to damage their ovaries and deter them from conception in the future. Exclusion Criteria: * Patients with no anticipated oncologic therapies * Patients who are pregnant * Children with one ovary * Children deemed high risk for perioperative complications * Patients unable to provide consent/assent (i.e. significant psychiatric problems/cognitive delay)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Prince of Wales Hospital
RECRUITINGHong Kong, Hong Kong
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