Study to Evaluate DNL151 in Subjects With Parkinson's Disease
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04056689 |
Recruitment Status :
Completed
First Posted : August 14, 2019
Last Update Posted : April 18, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Parkinson's Disease | Drug: DNL151 Drug: Placebo | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 36 participants |
Allocation: | Randomized |
Intervention Model: | Sequential Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1b, Multicenter, Randomized, Placebo-Controlled, Double-Blind Study to Determine the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of DNL151 in Subjects With Parkinson's Disease |
Actual Study Start Date : | July 23, 2019 |
Actual Primary Completion Date : | December 2, 2020 |
Actual Study Completion Date : | December 2, 2020 |

Arm | Intervention/treatment |
---|---|
Experimental: DNL151 Low Dose |
Drug: DNL151
Oral repeating dose |
Experimental: DNL151 Mid Dose |
Drug: DNL151
Oral repeating dose |
Experimental: DNL151 High Dose |
Drug: DNL151
Oral repeating dose |
Placebo Comparator: Placebo |
Drug: Placebo
Oral repeating dose |
- Number of Subjects with Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) [ Time Frame: Randomization to Day 42 ]
- Number of Subjects with laboratory test abnormalities [ Time Frame: Randomization to Day 42 ]
- Number of Subjects with vital sign abnormalities [ Time Frame: Randomization to Day 42 ]
- Number of Subjects with electrocardiogram (ECG) abnormalities [ Time Frame: Randomization to Day 42 ]
- Number of Subjects with clinically significant neurological examination abnormalities [ Time Frame: Randomization to Day 42 ]
- Pharmacokinetic measure of maximum observed plasma concentration (Cmax) of DNL151 [ Time Frame: Randomization to Day 28 ]
- Pharmacokinetic measure of time to reach maximum observed plasma concentration (Tmax) of DNL151 [ Time Frame: Randomization to Day 28 ]
- Pharmacokinetic measure of trough plasma observed concentration (Ctrough) of DNL151 [ Time Frame: Randomization to Day 28 ]
- Pharmacokinetic measure of area under the plasma drug concentration-time curve (AUC) of DNL151 [ Time Frame: Randomization to Day 28 ]
- Pharmacokinetic measure of CSF concentrations of DNL151 [ Time Frame: Randomization to Day 28 ]
- Pharmacodynamic measure of pS935 in whole blood [ Time Frame: Randomization to Day 28 ]
- Pharmacodynamic measure of pRab10 in PBMCs [ Time Frame: Randomization to Day 28 ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 30 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- Body mass index (BMI) between 18 and 35.0 kg/m2, inclusive
- Clinical diagnosis of Parkinson's disease meeting UK Brain Bank criteria and H&Y Stage I, II, or III.
- Able to hold Parkinson's disease medications 8 hours (overnight) prior to specific study assessments
Key Exclusion Criteria:
- Any history of clinically significant asthma, chronic obstructive pulmonary disease, or emphysema within 5 years of screening, or other clinically significant pulmonary disease within 6 months of screening
- Abnormal Vitals including Respiratory Rate, Body Temperature, Blood Pressure, and Pulse Rate
- Pulmonary Function Tests (PFTs) (FVC <60% predicted, FEV1 <50% predicted, FEV1:FVC ratio <0.6, DLCO <70% predicted)
- Clinically significant neurologic disorder other than Parkinson's disease, including history of stroke within 12 months of screening, cognitive impairment, seizure within 5 years of screening, or head trauma with loss of consciousness within 6 months of screening
- Montreal Cognitive Assessment (MoCA) score of <24 at screening
NOTE: Other protocol defined Inclusion/Exclusion criteria may apply

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04056689
United States, Florida | |
PPD Clinical Research Unit | |
Orlando, Florida, United States, 32806 | |
United States, Michigan | |
Quest Research Institute | |
Farmington Hills, Michigan, United States, 48334 | |
Belgium | |
UZ Leuven | |
Leuven, Belgium, 3000 | |
Netherlands | |
Centre for Human Drug Research | |
Leiden, South Holland, Netherlands, 2333 | |
QPS | |
Leeuwarden, Netherlands, 8934AD | |
United Kingdom | |
Royal Liverpool University Hospital | |
Liverpool, United Kingdom, L7 8XP | |
MAC Clinical Research | |
Manchester, United Kingdom, M13 9NQ | |
Simbec-Orion Clinical Pharmacology | |
Merthyr Tydfil, United Kingdom, CF48 4DR |
Study Director: | Medical Director | Biogen |
Responsible Party: | Biogen |
ClinicalTrials.gov Identifier: | NCT04056689 |
Other Study ID Numbers: |
DNLI-C-0003 |
First Posted: | August 14, 2019 Key Record Dates |
Last Update Posted: | April 18, 2023 |
Last Verified: | April 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | In accordance with Biogen's Clinical Trial Transparency and Data Sharing Policy on https://www.biogentrialtransparency.com/ |
URL: | https://vivli.org |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
LRRK2 Movement Disorders |
Parkinson Disease Parkinsonian Disorders Basal Ganglia Diseases Brain Diseases Central Nervous System Diseases |
Nervous System Diseases Movement Disorders Synucleinopathies Neurodegenerative Diseases |