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Parkinson's DiseaseMarch 2020Summary reviewed July 2026

A Cancer Drug Slowed Parkinson's but Caused Serious Side Effects at High Doses

Scientists tested nilotinib, a cancer drug, in 75 people with Parkinson's to see if it could slow the disease. The drug reached the brain and changed several brain chemicals linked to Parkinson's, including reducing harmful protein clumps.

What the trial was testing

The trial enrolled 75 patients with parkinson's disease. The study was sponsored by Georgetown University and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was mid-stage testing (phase 2/3). Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

The lower dose reduced alpha-synuclein clumps, a hallmark of Parkinson's, in brain fluid.

JAMA neurology · 2020 · NCT02954978

These findings — that nearly half of patients on 300mg had serious side effects versus 16% on placebo — were published in the JAMA neurology and represent the headline result of the study.

Researchers tracked outcomes across 75 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with parkinson's disease, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This was a mid-stage study showing nilotinib can reach the brain and affect chemicals involved in Parkinson's, but more serious side effects occurred with the drug compared to placebo. The treatment is not FDA-approved for Parkinson's. Larger studies are needed to know if it actually slows the disease. Talk to your doctor about proven Parkinson's treatments.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.

Open parkinson's disease trials

RecruitingInterventional study

Exploring the Possible Beneficial Impact of Non-invasive and Invasive Neuromodulation on Freezing of Gait in Parkinson's Disease During Different Ambulatory Complexities: An Electrophysiological and fMRI Study

Freezing of gait (FOG) stands out as a devastating symptom of Parkinson's disease (PD), where patients may become momentarily glued to the ground, rendering them incapable of walking efficiently. The pathogenesis of FOG remains uncertain but is likely attributed to functional perturbations in superficial cortical and deep locomotion regions. FOG tends to manifest more prominently during complex walking, such as turning, than during simple straight forward walking, and the reasons for this phenomenon remain unclear. Unfortunately, effective methods for overcoming this ambulatory issue has yet to be identified, and quantifying paroxysmal gait spells proves challenging with clinical rating alone; thus, a scientific tool is warranted. In this 3-year proposal, the investigators plan to address these challenges comprehensively.

Taichung, Taiwan
RecruitingInterventional study

Exoskeleton-Assisted Mobility in Aging and in Parkinson's Disease

This study will evaluate whether a wearable robotic exoskeleton can improve mobility, balance, and walking in healthy older adults and in individuals living with Parkinson's disease, populations at high risk of falls and mobility limitations. Participants will attend two laboratory sessions. The first session includes clinical assessments, fitting and familiarization with the exoskeleton, and interviews to explore user perceptions. The second session involves performing functional mobility tasks (e.g., walking, standing, turning) with and without the exoskeleton and under different assistance levels, while movement is measured using wearable sensors. The study will assess the immediate effects of the exoskeleton on mobility, compare assistance levels, identify which participants benefit most, and explore user experience and acceptability. Findings will help inform the development and implementation of assistive technologies to support mobility in healthy aging and in individuals with Parkinson's disease.

Gatineau, Quebec, Canada