Could stem cells save sight? new trial tests umbilical cord therapy for eye disease
NCT ID NCT05909488
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether stem cells from umbilical cord tissue can safely slow vision loss in people with retinitis pigmentosa, an inherited eye disease. Thirty participants will receive one of two doses injected around the eye and be monitored for six months. The main goals are to check safety and measure changes in vision and eye structure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- umbilical cord stem cells
- What this could lead to
- If it works, this could slow vision loss and help preserve sight in people with retinitis pigmentosa.
- What could go wrong
- This is an early combined Phase 2/3 trial with only 30 people. It primarily checks safety, and it's unknown if the stem cells will actually improve vision. There are risks like infection or eye inflammation.
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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Phase 2/3
Runs two stages together: whether the treatment works, then large-scale confirmation.
- Participants
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About 30 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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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18 to 65 years
- Sex
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Anyone
- 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: * Visus more than 20/100 * Have more than 0.68 uV on conical receptor cell amplitude checked by ERG * Visual field equivalent diameter more than 10o * Willing to sign informed consent as research subjects * Willing to do the peribulbar injection with mesenchymal stem cells isolated from umbilical cord tissue * Willing to do visual field checks with Humphrey's perimetry, vision tests with Snellen boards, Optical Coherent Tomography (OCT) examinations, electroretinogram examinations, and fill out a quality of life questionnaire Exclusion Criteria: * Pregnant or nursing women * Positive result of HIV test * Have a history of eye tumors * Under immunosuppressive treatment or other drugs that can affect the growth of transplanted stem cells * Have another eye disease such as diabetic retinopathy, uveitis, cataract, and glaucoma * Do not come to control according to the schedule determined by the researcher (loss to follow up)
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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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RSUP Dr. Sardjito
Yogyakarta, DI Yogyakarta, 55284, Indonesia
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a single eye injection restore sight in genetic blindness?
- A sharper look at the retina: new imaging technology may spot eye disease earlier
- Stem cell eye transplant aims to halt blindness from rare genetic disease
- Could stem cells restore sight in damaged eyes?
- Gene therapy injection aims to restore sight in rare blindness
- Ground-Level vision test could help retinitis pigmentosa patients walk better