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Trial-Ready Cohort-Down Syndrome (TRC-DS)
University of Southern California
Down Syndrome
Alzheimer Disease
Dementia
The purpose of the Trial-Ready Cohort - Down Syndrome (TRC-DS) is to enroll 120 healthy
adults with Down syndrome (DS), between the ages of 25-55, into a trial ready cohort (TRC),
and up to 250 participants in total including co-enrolled in the Alzheimer Biomarkers
Consortium... expand
The purpose of the Trial-Ready Cohort - Down Syndrome (TRC-DS) is to enroll 120 healthy adults with Down syndrome (DS), between the ages of 25-55, into a trial ready cohort (TRC), and up to 250 participants in total including co-enrolled in the Alzheimer Biomarkers Consortium - Down Syndrome (ABC-DS) study. Participants enrolled in the TRC-DS will undergo longitudinal cognitive and clinical assessment, genetic and biomarker testing, as well as imaging and biospecimen collection. Using these outcome measures, researchers will analyze the relationships between cognitive measures and biomarkers of Alzheimer's disease (AD) to identify endpoints for AD clinical trials in DS that best reflect disease progression. To learn more about the study and participating sites, visit our study website at: https://www.trcds.org/. TRC-DS is collaborating with the Alzheimer's Disease Biomarker Consortium-Down Syndrome (ABC-DS) to allow study participants to be concurrently enrolled in both ABC-DS and TRC-DS, referred to as "co-enrollment". ABC-DS is a longitudinal, observational research study that is overseen at University of Pittsburgh Coordinating Center. ABC-DS participants who express interest in potentially joining a clinical trial in the future and who meet TRC-DS eligibility criteria, may choose to co-enroll in TRC-DS at an ABC-DS Site. Co-enrolled participants will adhere to the ABC-DS protocol and schedule of activities, but agree to share their data with the TRC-DS team and to receive invitations for future participation in clinical trials. Fore more information on ABC-DS please visit https://www.nia.nih.gov/research/abc-ds or http://abcds.pitt.edu/. Type: Observational Start Date: Jun 2021 |
A Study to Evaluate Safety and Efficacy of BIIB091 in Participants With Relapsing Forms of Multiple Sclerosis
Biogen
Relapsing Forms of Multiple Sclerosis
The primary objectives are to investigate the safety and tolerability of BIIB091 monotherapy
in participants with relapsing multiple sclerosis (RMS) (Part 1), and to evaluate the effects
of BIIB091 combination therapy with Diroximel Fumarate (DRF) compared with the DRF
monotherapy... expand
The primary objectives are to investigate the safety and tolerability of BIIB091 monotherapy in participants with relapsing multiple sclerosis (RMS) (Part 1), and to evaluate the effects of BIIB091 combination therapy with Diroximel Fumarate (DRF) compared with the DRF monotherapy arm, on the key Magnetic Resonance Imaging (MRI) measure of active Central Nervous System (CNS) inflammation (Part 2). The secondary objectives are to evaluate the effects of BIIB091 monotherapy on the MRI measures of active CNS inflammation, to evaluate the effects of BIIB091 combination therapy with DRF compared with the DRF monotherapy arm on additional MRI measures of active CNS inflammation, to investigate the safety and tolerability of BIIB091 combination therapy with DRF in participants with RMS. Type: Interventional Start Date: Jul 2023 |
Metformin in Alzheimer's Dementia Prevention
Columbia University
Mild Cognitive Impairment
MAP will be a multisite phase II/III 1:1 randomized controlled trial (RCT) of long acting
metformin (reduced mass Glucophage XR) vs. matching placebo in 326 men and women with early
and late aMCI, without diabetes, not treated with metformin, overweight or obese, aged 55
years... expand
MAP will be a multisite phase II/III 1:1 randomized controlled trial (RCT) of long acting metformin (reduced mass Glucophage XR) vs. matching placebo in 326 men and women with early and late aMCI, without diabetes, not treated with metformin, overweight or obese, aged 55 years to 90 years. The RCT will last 18 months and have 4 visits: baseline, 6-months, 12-months, and 18-months. The RCT will be preceded by a screening phase followed by randomization and a titration period in which drug/placebo will be titrated from 500 mg a day (one tablet) to 2,000 mg a day (4 tablets), in increments of 500 mg (one tablet) every 10 days. Participants will remain in the RCT on the tolerated dose, and included in analyses on an intent to treat basis. We expect the attrition rate to be 10%/year. Neuropsychological battery, clinical interviews, physical exam, and phlebotomy will be conducted at baseline and every 6 months. Brain MRI will be conducted in approximately half of the participants (186) twice, at baseline, and after the last study visit at month 18. We will also conduct brain amyloid Positron Emission Tomography (PET) using 18F-Florbetaben, and tau PET using 18F-MK6240 in half of the participants at baseline and end of the RCT. The primary clinical outcome of the study will be changes in the Free and Cued Selective Reminding Test. The secondary clinical outcome will be changes in the Alzheimer's Disease Cooperative Study Preclinical Alzheimer's Cognitive Composite. Secondary subclinical outcomes will be changes in cortical thickness AD signature areas, changes in white matter hyperintensity volume, changes in brain amyloid burden, changes in brain tau burden, and changes in plasma biomarkers of amyloid, tau, and neurodegeneration. The data coordinating center and Imaging Core is located at John Hopkins University. The PET coordinating center is located at UC-Berkeley. The Clinical Coordinating and Monitoring Center and the central laboratory will be located at Columbia. The Research pharmacy function will be shared by the University of Rochester, which will dispense randomization kits, and the University of Iowa, which will receive bulk metformin and identical matching placebo from EMD Serono. Type: Interventional Start Date: Mar 2021 |
American Lung Association (ALA) Lung Health Cohort
Johns Hopkins University
Lung Diseases
The ALA-LHC is a longitudinal, multi-center cohort study that will enroll approximately 4,000
young adults between the ages of 25-35 who do not have severe lung disease. The overarching
objective of the ALA-LHC is to establish a national cohort of young adults for the purpose of... expand
The ALA-LHC is a longitudinal, multi-center cohort study that will enroll approximately 4,000 young adults between the ages of 25-35 who do not have severe lung disease. The overarching objective of the ALA-LHC is to establish a national cohort of young adults for the purpose of defining lung health and developing targets to intercept chronic lung disease at its earliest stages. Type: Observational Start Date: Oct 2021 |
AHEAD 3-45 Study: A Study to Evaluate Efficacy and Safety of Treatment With Lecanemab in Participants...
Eisai Inc.
Preclinical Alzheimer's Disease
Early Preclinical Alzheimer's Disease
The primary purpose of this study is to determine whether treatment with lecanemab is
superior to placebo on change from baseline of the Preclinical Alzheimer Cognitive Composite
5 (PACC5) at 216 weeks of treatment (A45 Trial) and to determine whether treatment with
lecanemab... expand
The primary purpose of this study is to determine whether treatment with lecanemab is superior to placebo on change from baseline of the Preclinical Alzheimer Cognitive Composite 5 (PACC5) at 216 weeks of treatment (A45 Trial) and to determine whether treatment with lecanemab is superior to placebo in reducing brain amyloid accumulation as measured by amyloid positron emission tomography (PET) at 216 weeks of treatment (A3 Trial). This study will also evaluate the long-term safety and tolerability of lecanemab in participants enrolled in the Extension Phase. Type: Interventional Start Date: Jul 2020 |
PrecISE (Precision Interventions for Severe and/or Exacerbation-Prone Asthma) Network Study
University of North Carolina, Chapel Hill
Asthma
The primary objective of this study is to evaluate several interventions given to
participants with severe asthma. Interventions are administered in a crossover manner with
16-week treatment periods followed by 8 to 16 week washout.
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The primary objective of this study is to evaluate several interventions given to participants with severe asthma. Interventions are administered in a crossover manner with 16-week treatment periods followed by 8 to 16 week washout. Type: Interventional Start Date: Dec 2019 |
Two Studies for Patients With High Risk Prostate Cancer Testing Less Intense Treatment for Patients With...
NRG Oncology
Metastatic Malignant Neoplasm in the Bone
Prostate Adenocarcinoma
Stage III Prostate Cancer AJCC v8
Stage IIIA Prostate Cancer AJCC v8
Stage IIIB Prostate Cancer AJCC v8
This phase III trial compares less intense hormone therapy and radiation therapy to usual
hormone therapy and radiation therapy in treating patients with high risk prostate cancer and
low gene risk score. This trial also compares more intense hormone therapy and radiation... expand
This phase III trial compares less intense hormone therapy and radiation therapy to usual hormone therapy and radiation therapy in treating patients with high risk prostate cancer and low gene risk score. This trial also compares more intense hormone therapy and radiation therapy to usual hormone therapy and radiation therapy in patients with high risk prostate cancer and high gene risk score. Apalutamide may help fight prostate cancer by blocking the use of androgen by the tumor cells. Radiation therapy uses high energy rays to kill tumor cells and shrink tumors. Giving a shorter hormone therapy treatment may work the same at controlling prostate cancer compared to the usual 24 month hormone therapy treatment in patients with low gene risk score. Adding apalutamide to the usual treatment may increase the length of time without prostate cancer spreading as compared to the usual treatment in patients with high gene risk score. Type: Interventional Start Date: Dec 2020 |
Open-label Study to Evaluate the Safety of Various Dosing Regimens of MuSK-CAART for MuSK Myasthenia...
Cabaletta Bio
MuSK Myasthenia Gravis
Muscle-specific tyrosine kinase (MuSK) myasthenia gravis (MG) is a rare but potentially
severe disease, in which patients develop pathogenic autoantibodies that specifically target
the MuSK protein in the neuromuscular junction. This phase 1 study is being conducted to
evaluate... expand
Muscle-specific tyrosine kinase (MuSK) myasthenia gravis (MG) is a rare but potentially severe disease, in which patients develop pathogenic autoantibodies that specifically target the MuSK protein in the neuromuscular junction. This phase 1 study is being conducted to evaluate the safety of various dosing regimens of an investigational cell therapy, MuSK-CAART, that can be given to patients with anti-MuSK antibody positive Myasthenia Gravis (MuSK MG), who have active disease. Various dosing regimens of MuSK-CAART alone, in combination with cyclophosphamide (CY), and in combination with CY and fludarabine (FLU) will be evaluated. Treatment with MuSK-CAART may potentially lead to complete and durable remission of disease. Type: Interventional Start Date: Nov 2022 |
Pragmatic Evaluation of Events And Benefits of Lipid-lowering in Older Adults
Duke University
Cognitive Impairment, Mild
Dementia
Cardiovascular Diseases
PREVENTABLE is a multi-center, randomized, parallel group, placebo-controlled superiority
study. Participants will be randomized 1:1 to atorvastatin 40 mg or placebo. This large study
conducted in community-dwelling older adults without cardiovascular disease (CVD) or dementia... expand
PREVENTABLE is a multi-center, randomized, parallel group, placebo-controlled superiority study. Participants will be randomized 1:1 to atorvastatin 40 mg or placebo. This large study conducted in community-dwelling older adults without cardiovascular disease (CVD) or dementia will demonstrate the benefit of statins for reducing the primary composite of death, dementia, and persistent disability and secondary composites including mild cognitive impairment (MCI) and cardiovascular events. Type: Interventional Start Date: Sep 2020 |
Guided Episodic Future Thinking to Increase Physical Activity Adherence and Promote Healthy Brain Aging
University of Kansas Medical Center
Exercise Training
Aging
The goal of this behavioral clinical trial is to learn how to increase physical activity in
mid-life adults. Specifically, can guided imagery that includes creating mental pictures
increase excitement about working out.
Participants will be asked to complete testing at the... expand
The goal of this behavioral clinical trial is to learn how to increase physical activity in mid-life adults. Specifically, can guided imagery that includes creating mental pictures increase excitement about working out. Participants will be asked to complete testing at the beginning of the study, following 6-weeks of an in-person exercise program, and 6-weeks after finishing the exercise program. Testing will include an exercise test, MRI, questionnaires, computer tasks, and a blood draw. Type: Interventional Start Date: Feb 2024 |
A Study to Evaluate INCA033989 Administered in Participants With Myeloproliferative Neoplasms
Incyte Corporation
Myeloproliferative Neoplasms
This study is being conducted to evaluate the safety, tolerability, dose-limiting toxicity
(DLT) and determine the maximum tolerated dose (MTD) and/or recommended dose(s) for expansion
(RDE) of INCA033989 administered in participants with myeloproliferative neoplasms.
expand
This study is being conducted to evaluate the safety, tolerability, dose-limiting toxicity (DLT) and determine the maximum tolerated dose (MTD) and/or recommended dose(s) for expansion (RDE) of INCA033989 administered in participants with myeloproliferative neoplasms. Type: Interventional Start Date: Dec 2023 |
MK-0616 (Oral PCSK9 Inhibitor) Cardiovascular Outcomes Study (MK-0616-015) CORALreef Outcomes
Merck Sharp & Dohme LLC
Arteriosclerosis
Hypercholesterolaemia
This is a phase 3, randomized, placebo-controlled study of the efficacy and safety of
MK-0616, an oral proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor, in
participants with high cardiovascular risk. The primary objective is to evaluate the efficacy
of MK-0616... expand
This is a phase 3, randomized, placebo-controlled study of the efficacy and safety of MK-0616, an oral proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor, in participants with high cardiovascular risk. The primary objective is to evaluate the efficacy of MK-0616 compared with placebo in increasing the time to the first occurrence of major adverse cardiovascular events (MACE) including coronary heart disease (CHD) death, ischemic stroke, myocardial infarction (MI), acute limb ischemia or major amputation, or urgent arterial revascularization. Type: Interventional Start Date: Oct 2023 |
Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression Plus Endocrine Therapy...
NRG Oncology
Breast Cancer
This Phase III Trial will determine whether adjuvant chemotherapy (ACT) added to ovarian
function suppression (OFS) plus endocrine therapy (ET) is superior to OFS plus ET in
improving invasive breast cancer-free survival (IBCFS) among premenopausal, early- stage
breast cancer... expand
This Phase III Trial will determine whether adjuvant chemotherapy (ACT) added to ovarian function suppression (OFS) plus endocrine therapy (ET) is superior to OFS plus ET in improving invasive breast cancer-free survival (IBCFS) among premenopausal, early- stage breast cancer (EBC) patients with estrogen receptor (ER)-positive, HER2-negative tumors and 21-gene recurrence score (RS) between 16-25 (for pN0 patients) and 0-25 (for pN1 patients). Type: Interventional Start Date: Aug 2023 |
Study Evaluating SC291 in Subjects With r/r B-cell Malignancies (ARDENT)
Sana Biotechnology
Non Hodgkin Lymphoma
Chronic Lymphocytic Leukemia
SC291-101 is a Phase 1 study to evaluate SC291 safety and tolerability, anti-tumor activity,
cellular kinetics, immunogenicity, and exploratory biomarkers.
expand
SC291-101 is a Phase 1 study to evaluate SC291 safety and tolerability, anti-tumor activity, cellular kinetics, immunogenicity, and exploratory biomarkers. Type: Interventional Start Date: May 2023 |
A Study to Evaluate the Efficacy and Safety of CIN-102 (Deudomperidone) in Adults With Diabetic Gastroparesis
CinDome Pharma, Inc.
Diabetic Gastroparesis
The goal of this clinical trial is to evaluate if the study drug CIN-102 (deudomperidone) can
help reduce the symptoms associated with diabetic gastroparesis in adult patients.
The main questions it aims to answer are:
- To evaluate the efficacy of CIN-102 on symptoms... expand
The goal of this clinical trial is to evaluate if the study drug CIN-102 (deudomperidone) can help reduce the symptoms associated with diabetic gastroparesis in adult patients. The main questions it aims to answer are: - To evaluate the efficacy of CIN-102 on symptoms of gastroparesis when given to patients with diabetic gastroparesis compared to a placebo - To evaluate the safety and tolerability of CIN-102 when given to patients with diabetic gastroparesis compared to a placebo Participants will go through the following schedule: - Screening period (1-2 visits) - Lead-in period (1 visit) - Will complete a Gastric Emptying Breath Test (GEBT) - Will complete daily diary and other Patient Reported Outcomes (PROs) as described in the protocol to assess eligibility for continued study participation - 12-week treatment period (5 visits) - Study drug taken twice daily by mouth - Will complete daily diaries and other PROs as described in protocol - 1 week follow-up (1 visit) Researchers will compare the effects of the following treatments: - Drug- CIN-102 Dose 1 - Drug- CIN-102 Dose 2 - Drug- Placebo Type: Interventional Start Date: Mar 2023 |
Strategies and Treatments for Respiratory Infections &Amp; Viral Emergencies (STRIVE): Immune Modulation...
University of Minnesota
COVID-19
COVID-19 can trigger a dysregulated immune response, and previous studies have shown that
immune modulation can improve outcomes in hospitalized patients. This trial is designed to
determine whether intensification of immune modulation early in the course of the disease
(while... expand
COVID-19 can trigger a dysregulated immune response, and previous studies have shown that immune modulation can improve outcomes in hospitalized patients. This trial is designed to determine whether intensification of immune modulation early in the course of the disease (while patients are on low flow oxygen) with abatacept (active arm) combined with standard of care (SOC) improves recovery as compared with placebo + SOC (placebo arm). For both groups, intensification of immunomodulation will be provided as part of SOC in case of signs of disease progression (patient requires high flow nasal oxygen (HFNO) or more support) and/or if the patient has rapidly increasing oxygen requirement. Type: Interventional Start Date: Jul 2023 |
Pembrolizumab vs. Observation in People With Triple-negative Breast Cancer Who Had a Pathologic Complete...
Alliance for Clinical Trials in Oncology
Anatomic Stage I Breast Cancer AJCC v8
Anatomic Stage II Breast Cancer AJCC v8
Anatomic Stage III Breast Cancer AJCC v8
Early Stage Triple-Negative Breast Carcinoma
The phase III trial compares the effect of pembrolizumab to observation for the treatment of
patients with early-stage triple-negative breast cancer who achieved a pathologic complete
response after preoperative chemotherapy in combination with pembrolizumab. Immunotherapy... expand
The phase III trial compares the effect of pembrolizumab to observation for the treatment of patients with early-stage triple-negative breast cancer who achieved a pathologic complete response after preoperative chemotherapy in combination with pembrolizumab. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. This trial may help researchers determine if observation will result in the same risk of cancer coming back as pembrolizumab after surgery in triple-negative breast cancer patients who achieve pathologic complete response after preoperative chemotherapy with pembrolizumab. Type: Interventional Start Date: May 2023 |
A Real World Study of eCoin for Urgency Urinary Incontinence: Post Approval Evaluation (RECIPE)
Valencia Technologies Corporation
Overactive Bladder
Urge Incontinence
Incontinence, Urinary
Urinary Urge Incontinence
A prospective, multicenter, single-arm study to evaluate the safety and effectiveness of the
eCoin® implanted tibial nerve stimulator in subjects with urgency urinary incontinence (UUI).
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A prospective, multicenter, single-arm study to evaluate the safety and effectiveness of the eCoin® implanted tibial nerve stimulator in subjects with urgency urinary incontinence (UUI). Type: Interventional Start Date: Jan 2023 |
A Study of Olezarsen (ISIS 678354) Administered Subcutaneously to Participants With Severe Hypertriglyceridemia...
Ionis Pharmaceuticals, Inc.
Severe Hypertriglyceridemia
The purpose of this study is to evaluate the safety and tolerability of olezarsen in
participants with SHTG.
expand
The purpose of this study is to evaluate the safety and tolerability of olezarsen in participants with SHTG. Type: Interventional Start Date: Dec 2022 |
Alzheimer's Disease Neuroimaging Initiative 4
University of Southern California
Mild Cognitive Impairment
Alzheimer Disease
Dementia
Since its launch in 2004, the overarching aim of the Alzheimer's Disease Neuroimaging
Initiative (ADNI) Study has been to validate biomarkers for Alzheimer's disease (AD) clinical
trials. ADNI4 continues the previously funded ADNI1, ADNI-GO, ADNI2, and ADNI3 studies that
have... expand
Since its launch in 2004, the overarching aim of the Alzheimer's Disease Neuroimaging Initiative (ADNI) Study has been to validate biomarkers for Alzheimer's disease (AD) clinical trials. ADNI4 continues the previously funded ADNI1, ADNI-GO, ADNI2, and ADNI3 studies that have combined public/private collaborations between academia and industry to determine the relationships between the clinical, cognitive, imaging, genetic and biochemical biomarker characteristics of the entire spectrum of AD. Type: Observational Start Date: Jun 2023 |
Study to Evaluate the Safety, Phage Kinetics, and Efficacy of Inhaled AP-PA02 in Subjects With Non-Cystic...
Armata Pharmaceuticals, Inc.
Non-cystic Fibrosis Bronchiectasis
Pseudomonas Aeruginosa
Lung Infection
A phase 2, multi-center, double-blind, randomized, placebo-controlled study to evaluate the
safety, phage kinetics, and efficacy of inhaled AP-PA02 administered in subjects with
non-cystic fibrosis bronchiectasis and chronic pulmonary Pseudomonas aeruginosa infection.
expand
A phase 2, multi-center, double-blind, randomized, placebo-controlled study to evaluate the safety, phage kinetics, and efficacy of inhaled AP-PA02 administered in subjects with non-cystic fibrosis bronchiectasis and chronic pulmonary Pseudomonas aeruginosa infection. Type: Interventional Start Date: Jan 2023 |
A Study of Mavacamten in Non-Obstructive Hypertrophic Cardiomyopathy
Bristol-Myers Squibb
Cardiomyopathy, Hypertrophic
The purpose of this study is to evaluate the safety, tolerability, and efficacy of mavacamten
compared with placebo in participants with symptomatic non-obstructive hypertrophic
cardiomyopathy (nHCM).
expand
The purpose of this study is to evaluate the safety, tolerability, and efficacy of mavacamten compared with placebo in participants with symptomatic non-obstructive hypertrophic cardiomyopathy (nHCM). Type: Interventional Start Date: Dec 2022 |
A Study to Investigate the Efficacy and Safety of Efgartigimod PH20 SC in Adult Participants With Active...
argenx
Active Idiopathic Inflammatory Myopathy
Myositis
Dermatomyositis
Polymyositis
Immune-Mediated Necrotizing Myopathy
This study's purpose is to measure the treatment response from efgartigimod PH20 SC compared
with placebo in participants with Idiopathic Inflammatory Myopathy (IIM). Participants with
the IIM subtypes of dermatomyositis (DM), immune-mediated necrotizing myopathy (IMNM), or... expand
This study's purpose is to measure the treatment response from efgartigimod PH20 SC compared with placebo in participants with Idiopathic Inflammatory Myopathy (IIM). Participants with the IIM subtypes of dermatomyositis (DM), immune-mediated necrotizing myopathy (IMNM), or certain other subtypes of polymyositis (PM; including antisynthetase syndrome [ASyS]) will be included in the study. Treatment response will be measured by Total improvement score (TIS). Additional information can be found on https://myositis-study.com/. Type: Interventional Start Date: Oct 2022 |
A Prospective Registry Study to Assess Real-world Patient Characteristics, Treatment Patterns, and Longitudinal...
Bristol-Myers Squibb
Obstructive Hypertrophic Cardiomyopathy
The purpose of this study is to evaluate the safety of mavacamten in patients with
symptomatic obstructive hypertrophic cardiomyopathy (HCM) treated in the real-world setting.
The registry study also provide a real-world understanding of the current obstructive HCM
patient... expand
The purpose of this study is to evaluate the safety of mavacamten in patients with symptomatic obstructive hypertrophic cardiomyopathy (HCM) treated in the real-world setting. The registry study also provide a real-world understanding of the current obstructive HCM patient population, treatment patterns, and clinical relevant outcomes for patients with symptomatic obstructive HCM in the US. Type: Observational [Patient Registry] Start Date: Aug 2022 |
A Study to Assess the Safety of BIIB122 Tablets and if it Can Slow the Worsening of Early-Stage Parkinson's...
Biogen
Parkinson Disease
In this study, researchers will learn more about a study drug called BIIB122 in participants
with early-stage Parkinson's disease (PD). In this study:
- Participants will take 225 milligrams (mg) of BIIB122 or a placebo as tablets by mouth.
A placebo looks like the... expand
In this study, researchers will learn more about a study drug called BIIB122 in participants with early-stage Parkinson's disease (PD). In this study: - Participants will take 225 milligrams (mg) of BIIB122 or a placebo as tablets by mouth. A placebo looks like the study drug but has no real medicine in it. - Participants will take BIIB122 or placebo 1 time a day for up to a minimum of 48 weeks and a maximum of 144 weeks. - Certain medications for PD will be allowed at enrollment for a subset of participants. - The majority of clinic visits will be every 12 weeks. The main question researchers are trying to answer is if taking BIIB122 slows the worsening of symptoms more than placebo in the early stages of PD. To help answer this question, researchers will use a questionnaire called the Movement Disorder Society-Unified Parkinson's Disease Rating Scale, also known as the MDS-UPDRS. Researchers will use the MDS-UPDRS to learn about participant PD symptoms and how they affect their daily life. Researchers will also learn more about the safety of BIIB122. Type: Interventional Start Date: Apr 2022 |