Skin biopsies could unlock hidden genetic diagnoses
NCT ID NCT05996731
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study aims to improve diagnosis for people with rare genetic diseases whose standard genetic tests came back negative. Researchers will take a small skin sample and analyze RNA to find hidden genetic changes. The study involves 105 participants, including healthy volunteers and patients with known or suspected rare diseases.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could improve diagnosis for people with rare genetic diseases who currently have no answers from standard genetic tests.
- What could go wrong
- This is an early-stage observational study, not a treatment trial. It may not lead to a new diagnostic tool, and results may not apply to all rare diseases.
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 105 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2024
- Expected to finish
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Jun 2026
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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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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.
Healthy subjects. Inclusion Criteria: * Male and female adults * Written informed consent Exclusion Criteria: * Inability to understand the potential risk and benefits of the study * Legal incapacity Validation cohort. Inclusion criteria: * Male and female adults * Genetic diseases affecting RNA levels (frameshifts, stop, large deletions, alteration of canonical splicing sites) * Written informed consent Exclusion criteria: * Underage patients * Inability to understand the potential risk and benefits of the study * Legal incapacity Discovery cohort. Inclusion criteria: * Male and female patients (children and adults with onset in infancy or early adulthood) with rare genetic undiagnosed diseases * Patients with no strong candidates based on previous genetic analysis such as WES, but with clinically suspicion of a genetic rare disease * Written informed consent Exclusion criteria: * Inability to understand the potential risk and benefits of the study * Legal incapacity
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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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Centro di Ricerche Cliniche per le Malattie Rare "Aldo e Cele Daccò"
RECRUITINGRanica, BG, 24020, Italy
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