Clinical trial Recruiting at 1 site Observational Ages 18 and up

National Parkinson's biobank with whole genome sequencing and patient-derived stem-cell testing

Official title: Implementing a National Biobank of Genetic, Sporadic and Prodromic Parkinson's Disease With Whole Genome Analysis and Functional Assessment of Polygenic Inheritance by iPSC Technology

Run by IRCCS San Raffaele · NCT05721911 · Data updated 2026-11-12

This project will test whether combining whole genome sequencing and patient-derived stem cells can help find rare genetic changes linked to Parkinson's disease and REM sleep behavior disorder.

More Parkinson Disease trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment230 (estimated)
SponsorIRCCS San Raffaele
Academic / other
Locations1 site (Milan, Italy)
StatusRecruiting
StartedOctober 30, 2023
Main results expectedMarch 4, 2026
Study endsDecember 2026
Registry record updatedMarch 30, 2026
Trial IDNCT05721911 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal participants are adults with sporadic Parkinson's disease who meet clinical diagnostic criteria (at least two cardinal signs, including tremor or bradykinesia), people with idiopathic REM sleep behavior disorder per ICSD-3, and healthy controls (often spouses).

Probably not a fit

People with atypical parkinsonism, known monogenic Parkinson's mutations, major psychiatric disorders, or other neurodegenerative diseases are unlikely to gain direct benefit from this observational genetic and iPSC-focused project.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multicenter observational project will create a standardized national biobank of blood, DNA, and cellular samples from people with Parkinson's disease (PD), REM sleep behavior disorder (RBD), and healthy controls. Teams will harmonize clinical reporting and sample collection across centers, recruit additional participants, and perform whole genome sequencing on a selected cohort (about 200 PD cases negative for known PD gene mutations) as well as on RBD patients. Investigators will generate and quality-control induced pluripotent stem cell (iPSC) lines from patient blood and use gene editing to test the functional effects of co-inherited rare coding variants as a potential polygenic driver of sporadic PD. The biobank and validated iPSC lines will be made available to the scientific community to support further research.

Why it matters

Potential benefit: If successful, this could lead to earlier genetic diagnosis, better understanding of disease mechanisms, and identification of new targets for treatments.

How similar studies have gone: Whole genome sequencing and iPSC modeling have previously linked some rare variants to Parkinson's biology, but using gene-edited iPSCs to functionally test the combined impact of multiple rare variants as a polygenic mechanism is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria PD patients:

* Presence of at least 2 of the 4 cardinal signs (tremor, rigidity, bradykinesia, onset asymmetric) one of which must be tremor or bradykinesia;
* Absence of atypical symptoms such as: i) early postural instability, freezing phenomena, cognitive impairment, hallucinations, pathological involuntary movements, vertical gaze paralysis; ii) confirmed causes of secondary parkinsonism (focal lesions, drugs, substances toxic);
* Documented response to L-dopa or dopamine agonist use (or lack of adequate therapeutic attempt with L-dopa or dopamine agonists).

Inclusion Criteria RBD patients:

• Subjects affected by idiopathic RBD that will be selected according to the most recent criteria international classification of sleep disorders (ICSD-3).

Exclusion Criteria:

* pre-existing psychiatric conditions;
* Neurodegenerative neurological diseases such as multiple sclerosis, lateral sclerosis amyotrophic, Alzheimer's, neuromuscular pathologies, epilepsy;
* diagnosis of dementia;
* depression;
* prolonged intake of anxiolytics, antidepressants, antipsychotics, hypnotic drugs, cognitive stimulants

Where it's running

  • IRCCS San Raffaele
    Milan, Italy, Italy
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.