We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
Try the New Site
We're building a modernized ClinicalTrials.gov! Visit Beta.ClinicalTrials.gov to try the new functionality.
ClinicalTrials.gov Menu

Study to Evaluate DNL201 in Subjects With Parkinson's Disease

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: NCT03710707
Recruitment Status : Completed
First Posted : October 18, 2018
Last Update Posted : January 13, 2020
Information provided by (Responsible Party):
Denali Therapeutics Inc.

Brief Summary:
The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of multiple oral doses of DNL201 in subjects with Parkinson's disease.

Condition or disease Intervention/treatment Phase
Parkinson Disease Drug: DNL201 Drug: Placebo Phase 1

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 29 participants
Allocation: Randomized
Intervention Model: Parallel 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 DNL201 in Subjects With Parkinson's Disease
Actual Study Start Date : December 4, 2018
Actual Primary Completion Date : December 6, 2019
Actual Study Completion Date : December 6, 2019

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: DNL201 low dose Drug: DNL201
Oral repeating dose

Experimental: DNL201 high dose Drug: DNL201
Oral repeating dose

Placebo Comparator: Placebo Drug: Placebo
Oral repeating dose

Primary Outcome Measures :
  1. Number of Subjects with Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) [ Time Frame: Randomization to Day 42 ]
  2. Number of Subjects with laboratory test abnormalities [ Time Frame: Randomization to Day 42 ]
  3. Number of Subjects with vital sign abnormalities [ Time Frame: Randomization to Day 42 ]
  4. Number of Subjects with electrocardiogram (ECG) abnormalities [ Time Frame: Randomization to Day 42 ]
  5. Number of Subjects with clinically significant neurological examination abnormalities [ Time Frame: Randomization to Day 42 ]

Secondary Outcome Measures :
  1. Pharmacokinetic measure of maximum observed plasma concentration (Cmax) of DNL201 [ Time Frame: Randomization to Day 28 ]
  2. Pharmacokinetic measure of time to reach maximum observed plasma concentration (Tmax) of DNL201 [ Time Frame: Randomization to Day 28 ]
  3. Pharmacokinetic measure of trough plasma observed concentration (Ctrough) of DNL201 [ Time Frame: Randomization to Day 28 ]
  4. Pharmacokinetic measure of area under the plasma drug concentration-time curve (AUC) of DNL201 [ Time Frame: Randomization to Day 28 ]
  5. Pharmacokinetic measure of CSF concentrations of DNL201 [ Time Frame: Randomization to Day 28 ]
  6. Pharmacodynamic measure of pS935 in whole blood and/or PBMCs [ Time Frame: Randomization to Day 28 ]
  7. Pharmacodynamic measure of pRab10 in PBMCs [ Time Frame: Randomization to Day 28 ]

Information from the National Library of Medicine

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.

Layout table for eligibility information
Ages Eligible for Study:   30 Years to 80 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.
  • sPD subgroup without a LRRK2 mutation; PD LRRK2 subgroup with LRRK2 mutation
  • Screening dopamine transporter (DAT) SPECT scan with a DAT deficit consistent with Parkinson's disease
  • 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, and Blood Pressure
  • 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, 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

Information from the National Library of Medicine

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): NCT03710707

Layout table for location information
United States, California
Clinical Site(s)
Long Beach, California, United States, 90808
United States, Colorado
Clinical Site(s)
Aurora, Colorado, United States, 80045
United States, Florida
Clinical Site(s)
Miami, Florida, United States, 33143
Clinical Site(s)
Orlando, Florida, United States, 32806
United States, Michigan
Clinical Site(s)
Farmington Hills, Michigan, United States, 48334
United States, Pennsylvania
Clinical Site(s)
Philadelphia, Pennsylvania, United States, 19104
United States, Washington
Clinical Site(s)
Spokane, Washington, United States, 99202
Sponsors and Collaborators
Denali Therapeutics Inc.
Layout table for additonal information
Responsible Party: Denali Therapeutics Inc.
ClinicalTrials.gov Identifier: NCT03710707    
Other Study ID Numbers: DNLI-B-0002
First Posted: October 18, 2018    Key Record Dates
Last Update Posted: January 13, 2020
Last Verified: January 2020

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Denali Therapeutics Inc.:
Parkinson's Disease
Movement Disorders
Additional relevant MeSH terms:
Layout table for MeSH terms
Parkinson Disease
Parkinsonian Disorders
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Neurodegenerative Diseases