Study Stopped
New data suggests that insufficient target engagement would be achieved for efficacy.
A Study of LY2599666 in Healthy Participants and Participants With Mild Cognitive Impairment or Alzheimer's Disease (AD)
Single-Dose and Multiple-Dose, Dose-Escalation Study With LY2599666 to Evaluate the Safety, Pharmacokinetics, and Tolerability in Healthy Subjects and Patients With Mild Cognitive Impairment Due to Alzheimer's Disease and Mild-to-Moderate Alzheimer's Disease
2 other identifiers
interventional
50
2 countries
5
Brief Summary
The main purpose of this study is to evaluate the safety and tolerability of the study drug known as LY2599666 in different groups of people - those who are healthy, those who have mild cognitive impairment due to Alzheimer's Disease (AD), and those with mild-to-moderate AD. The study will measure how much LY2599666 gets into the bloodstream and how long it takes the body to get rid of it. It will also evaluate how LY2599666 affects the body. The study has three parts. Part A will last about 2 months. Parts B and C will each last about 23 weeks. Participants may only enroll in one part.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_1 healthy
Started Dec 2015
Longer than P75 for phase_1 healthy
5 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
November 23, 2015
CompletedFirst Posted
Study publicly available on registry
November 25, 2015
CompletedStudy Start
First participant enrolled
December 1, 2015
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2016
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2016
CompletedResults Posted
Study results publicly available
September 23, 2019
CompletedJune 17, 2020
June 1, 2020
1 year
November 23, 2015
June 28, 2019
June 9, 2020
Conditions
Outcome Measures
Primary Outcomes (1)
Number of Participants With One or More Serious Adverse Event (SAE) Considered by the Investigator to be Related to Study Drug Administration
Number of participants who experienced one or more treatment-emergent serious adverse events related to study treatment. A summary of other non-serious AEs, and all SAE's, regardless of causality, is located in the Reported Adverse Events section.
Baseline through 4 weeks (Part A) or 16 weeks (Part B )
Secondary Outcomes (6)
Pharmacokinetics (PK): Maximum Concentration (Cmax) of LY2599666 Part A
Day 1: Pre-dose and 2, 4, 8, 12, 24, 48, 72, 96, 120, 168, 216, 264, 336, 504, 672 hours post-dose (Part A)
Pharmacokinetics (PK): Maximum Concentration (Cmax) of LY2599666 Part B
Day 85: Pre-dose, 2, 4, 8, 12, 24, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 96, 120, 168, 216, 264, 336, 504, 672 hours post-dose (Part B)
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Zero to Infinity (AUC 0-∞) of LY2599666 Part A
Day 1: Pre-dose and 2, 4, 8, 12, 24, 48, 72, 96, 120, 168, 216, 264, 336, 504, 672 hours post-dose (Part A)
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Zero to 168 Hours (AUC 0-168) of LY2599666 Part B
Day 85: Pre-dose, 2, 4, 8, 12, 24, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 96, 120, 168 hours post-dose (Part B)
Plasma Amyloid Beta1-40 (Aβ1-40 ) Concentration Part A
Day 1: Pre-dose and 2, 4, 8, 12, 24, 48, 72, 96, 120, 168, 216, 264, 336, 504, 672 hours post-dose (Part A)
- +1 more secondary outcomes
Study Arms (6)
LY2599666 (Part A)
EXPERIMENTALLY2599666 given subcutaneously (SC) once.
Placebo (Part A)
PLACEBO COMPARATORPlacebo matching LY2599666 given SC once.
LY2599666 (Part B)
EXPERIMENTALLY2599666 given SC once weekly for 12 weeks (13 doses).
Placebo (Part B)
PLACEBO COMPARATORPlacebo given SC once weekly for 12 weeks (13 doses).
Solanezumab (Part C)
EXPERIMENTALSolanezumab given intravenously (IV) once weekly or once every 4 weeks for 12 weeks.
Placebo (Part C)
PLACEBO COMPARATORPlacebo given IV once weekly or once every 4 weeks for 12 weeks.
Interventions
Eligibility Criteria
You may qualify if:
- Healthy Participants Part A:
- Overtly healthy males or females as determined by medical history and physical examination
- Have a body mass index (BMI) between 18.0 and 32.0 kilograms per meter squared (kg/m²), inclusive
- Participants With Mild Cognitive Impairment or Alzheimer's Disease (AD) \[Part B and C\]:
- Participants are at least 50 years old at screening
- Present with Mild Cognitive Impairment (MCI) due to Alzheimer's Disease (AD) or mild-to-moderate AD
- Have a caregiver/study informant who provides a separate written informed consent to participate
- Have adequate vision and hearing for neuropsychological testing in the opinion of the investigator
- Positive florbetapir scan
You may not qualify if:
- All Participants
- Are currently enrolled in a clinical trial involving an investigational product or off-label use of a drug or device or are concurrently enrolled in any other type of medical research judged not to be scientifically or medically compatible with this study
- Have known allergies to LY2599666, solanezumab, or any related compounds or components of the formulations, or have a history of significant atopy
- Have an abnormality in the 12-lead electrocardiogram (ECG) that, in the opinion of the investigator, increases the risks associated with participating in the study
- Have an abnormal blood pressure as determined by the investigator
- Have significant allergies to humanized monoclonal antibodies, diphenhydramine, epinephrine, or methylprednisone
- Require treatment with other monoclonal antibodies
- Participants With Mild Cognitive Impairment or Alzheimer's Disease (AD) \[Part B and C\]
- Have medical or surgical conditions in which lumbar puncture and or/catheter insertion is contraindicated
- Have any contraindication for magnetic resonance imaging (MRI) studies, including claustrophobia, the presence of metal (ferromagnetic) implants, or a cardiac pacemaker that is not compatible with MRI
- Participants With Mild Cognitive Impairment or Alzheimer's Disease (AD) \[Part C\]
- Have had lymphoma, leukemia, or any malignancy within the past 5 years except for basal cell or squamous epithelial carcinomas of the skin that have been resected with no evidence of metastatic disease for 3 years, cervical carcinoma in situ, or in situ prostate cancer with a normal prostate-specific antigen post treatment
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (5)
Parexel Early Phase Unit at Glendale
Glendale, California, 91206, United States
CRI Lifetree
Marlton, New Jersey, 08053, United States
PRA Health Sciences
Salt Lake City, Utah, 84106, United States
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
Kobe, 650-0047, Japan
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
Shinjuku-Ku, 169-0073, Japan
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Limitations and Caveats
Development of LY2599666 was stopped based on lack of efficacy of another compound directed against the same target. Following the enrollment of seven participants into Part B Cohort 5, enrollment was stopped.
Results Point of Contact
- Title
- Chief Medical Officer
- Organization
- Eli Lilly and Company
Study Officials
- STUDY DIRECTOR
Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST)
Eli Lilly and Company
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- GT60
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 23, 2015
First Posted
November 25, 2015
Study Start
December 1, 2015
Primary Completion
December 1, 2016
Study Completion
December 1, 2016
Last Updated
June 17, 2020
Results First Posted
September 23, 2019
Record last verified: 2020-06