Scientists investigate why cystinosis affects skin color
NCT ID NCT00822250
First seen Jun 27, 2026 ยท Last updated Jun 27, 2026
Summary
This study looked at 30 people with cystinosis, a rare disease that causes crystals to build up in the body. Researchers wanted to understand why some patients have lighter skin patches and how this relates to the disease. They studied genetic and skin samples to find the molecular cause, without offering any treatment.
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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 30 people
The number the study aims to enrol. It can still change while the study runs.
- Start date
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Apr 2008
- Finished
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Dec 2009
- 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 year to 15 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. cystinosis 2. known CTNS mutation Exclusion Criteria: 1. patient with corticotherapy treatment 2. patient with immunosuppressant treatment
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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.
Contacts and locations
Locations
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department of dermatology, Nice University Hospital
Nice, 06000, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Scientists launch Largest-Ever study to unravel Cystinosis's Long-Term effects
- Newborn screening study aims to catch rare diseases at birth
- Rare disease database aims to boost cystinosis care across europe
- Experimental gene therapy aims to fix cystinosis at the source
- Cystinosis study probes medication adherence and brain risks
- Cystinosis drug under Long-Term watch: could cysteamine be key?