Actively Recruiting

Phase 4
Age: 18Years +
All Genders
NCT06765668

A Study of CREXONT (Carbidopa and Levodopa) Extended-Release Capsules in Participants With Parkinson's Disease

Led by Impax Laboratories, LLC · Updated on 2025-08-24

220

Participants Needed

27

Research Sites

77 weeks

Total Duration

On this page

Sponsors

I

Impax Laboratories, LLC

Lead Sponsor

A

Amneal Pharmaceuticals, LLC

Collaborating Sponsor

AI-Summary

What this Trial Is About

The primary purpose of this study is to evaluate efficacy and safety of CREXONT under real world conditions in participants with Parkinson disease (PD).

CONDITIONS

Official Title

A Study of CREXONT (Carbidopa and Levodopa) Extended-Release Capsules in Participants With Parkinson's Disease

Who Can Participate

Age: 18Years +
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Diagnosed with Parkinson's disease according to UK Parkinson's Disease Society Brain Bank criteria and treated with stable oral CD-LD
  • Score of at least 20 on the Movement Disorder Society - Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part III in the "Off" state
  • Have predictable "Off" periods with motor fluctuations as scored on MDS-UPDRS Part IV B
  • Experience daily predictable "wearing-off" episodes with worsening motor symptoms for at least 4 weeks prior to screening
  • Have at least 2.5 cumulative hours per day of "Off" time while awake
  • Able to differentiate "On" and "Off" states with at least 75% agreement with a trained rater during training
  • Able to complete Parkinson's Disease diaries properly with valid entries
  • Responsive to CD-LD therapy and on a stable regimen for at least 4 weeks prior to baseline
  • Taking required minimum doses of CD-LD or Rytary with specified dosing frequencies
  • Able and willing to provide written informed consent
  • Able and willing to comply with the study protocol, including diary completion and study visits
  • Participants from prior CREXONT studies may enroll
Not Eligible

You will not qualify if you...

  • Considered unsuitable for the study by the clinical investigator based on CREXONT prescribing information
  • History of neurosurgical treatment for PD or planned neurosurgery before Day 42 visit
  • Use of certain PD treatments within 4 weeks prior to baseline, including multiple CR CD-LD doses (except single bedtime dose), Duopa, nonselective MAOIs, rescue medications for "Off" episodes, or investigational drugs
  • Unable to comprehend study requirements or complete PD diaries and patient-reported outcomes
  • Employees or family members of the investigator, study staff, or Sponsor

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Trial Site Locations

Total: 27 locations

1

Barrow Neurological Institute

Phoenix, Arizona, United States, 85013

Not Yet Recruiting

2

University of Arkansas for Medical Sciences

Little Rock, Arkansas, United States, 72205

Actively Recruiting

3

Parkinson's Research Centers of America - Orange County

Aliso Viejo, California, United States, 92656

Actively Recruiting

4

Parkinson's Research Centers of America - Palo Alto

Palo Alto, California, United States, 94301

Actively Recruiting

5

Visionary Investigators Network

Aventura, Florida, United States, 33180

Actively Recruiting

6

Parkinsons Disease and Movement Disorders Center of Boca Raton

Boca Raton, Florida, United States, 33486

Actively Recruiting

7

Univesity of Miami - Miller School of Medicine

Boca Raton, Florida, United States, 33486

Actively Recruiting

8

University of Miami

Miami, Florida, United States, 33136

Actively Recruiting

9

N1 Research LLC

Orlando, Florida, United States, 32825

Actively Recruiting

10

USF Parkinson's Disease and Movement Disorders Center

Tampa, Florida, United States, 33613

Actively Recruiting

11

Central DuPage Hospital - Movement Disorders Center

Winfield, Illinois, United States, 60190

Not Yet Recruiting

12

University of Kansas Medical Center

Kansas City, Kansas, United States, 66160

Actively Recruiting

13

Quest Research Institute

Farmington Hills, Michigan, United States, 48334

Actively Recruiting

14

Cleveland Clinic Lou Ruvo Center for Brain Health

Las Vegas, Nevada, United States, 89106

Not Yet Recruiting

15

Parkinson's Research Centers of America - Long Island

Commack, New York, United States, 11725

Actively Recruiting

16

Atrium Health Wake Forest Baptist Adult Neurology - Janeway Tower

Winston-Salem, North Carolina, United States, 27157

Actively Recruiting

17

NeuroScience Research Center, LLC

Canton, Ohio, United States, 44718

Actively Recruiting

18

University of Cincinnati

Cincinnati, Ohio, United States, 45219

Actively Recruiting

19

University Hospitals Cleveland Medical Center

Cleveland, Ohio, United States, 44106

Actively Recruiting

20

The Movement Disorder Clinic of Oklahoma

Tulsa, Oklahoma, United States, 73136

Actively Recruiting

21

Neurology Consultants of Dallas, PA

Dallas, Texas, United States, 75243

Actively Recruiting

22

Texas Movement Disorder Specialists, PLLC

Georgetown, Texas, United States, 78628

Actively Recruiting

23

Icahn School of Medicine at Mount Sinai

Houston, Texas, United States, 77030

Not Yet Recruiting

24

The University of Texas Health Science Center at Houston- McGovern Medical School

Houston, Texas, United States, 77030

Actively Recruiting

25

Inova Neurology

Fairfax, Virginia, United States, 22031

Actively Recruiting

26

VCU Parkinsons Disease and Movement Disorders Center

Henrico, Virginia, United States, 23233

Actively Recruiting

27

MedStar Georgetown University Hospital Department of Neurology

McLean, Virginia, United States, 22101

Actively Recruiting

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How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

NA

Model

SINGLE_GROUP

Primary Purpose

TREATMENT

Number of Arms

1

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