Longitudinal Natural History Protocol for PRKN- and PINK1-Linked PD

Background: Parkinson s disease is a neurologic disorder that affects movement. Its cause is unknown, and it usually begins later in life. Gene changes (PRKN and PINK1) can also cause rare types of Parkinson s disease that start at a young age. Researchers want to conduct a natural history study to learn more about how genes play a role in Parkinson s disease. Objective: To collect data and biological samples from people with different types of Parkinson s disease. Eligibility: People aged 18 to 80 years with either Parkinson s disease or PRKN- and PINK1-linked Parkinson s disease. Healthy volunteers are also needed. Design: Participants will have 6 clinic visits over 5 years. Each visit may take 1 to 3 days. During each visit: Participants will have a physical exam. The exam will be videotaped. They will answer questions about their movement, thinking, mood, and sense of smell. The extent of any symptoms of Parkinson s disease will be evaluated: Participants movements may be assessed with a finger tapping test. They may be asked to scratch and sniff different scented strips to identify odors. They will wear motion sensors on their arms, legs, chest, and back at the clinic. They will wear motion sensor devices on their wrists at home for 1 week. Blood and urine samples will be collected. Other tests are optional: Magnetic resonance imaging (MRI) scan of the brain. Participants will lie on a table that slides into a tube. Lumbar puncture (spinal tap). A thin needle will be inserted into their lower back to draw out a sample of the fluid around their spinal cord. Muscle biopsy. A small sample of tissue will be taken from the leg.

NCT Number	NCT07613112
Lead Sponsor	National Institute of Neurological Disorders and Stroke (NINDS)
Conditions	PARKINSON DIS
Enrollment	70 participants
Start Date	2026-10-01
Primary Completion	2036-05-30 (estimated)
Study Completion	2036-05-30 (estimated)
Updated on ClinicalTrials.gov	2026-08-13