Please assess the completion status of the following clinical trial:

Trial Title: Single-center Pathophysiological Study of the Role of Inflammation, Changes in the Intestinal Epithelial Barrier and the Intestinal Microbiota in Parkinson's Disease

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~Parkinson's Disease patients :~* patients with Parkinson's disease according to the criteria of the United Kingdom Parkinson's disease survey brain bank (UKPDSBB)~* aged over 18 years~* who have given their consent to participate in this study~Idiopathic REM sleep behavior disorders patients:~* patients with an Idiopathic REM sleep behavior disorder confirmed by video-polysomnography (International Classification of Sleep Disorders-3 criteria), not explained by a pathology (narcolepsy, brainstem injury, neurodegenerative disease)~* aged over 18 years~* having given their consent to participate in this study~Control:~* patients undergoing coloscopy for family screening for digestive polyps~* aged over 18~* who have given their consent to participate in this study~Exclusion Criteria:~* dementia (MINI MENTAL STATE EXAMINATION score \<24)~* history of authenticated colonic disease (inflammatory disease, adenocarcinoma) or functional colopathy in control subjects or having preceded the first signs of Parkinson's Disease or Idiopathic REM sleep behavior disorder for more than 5 years, respectively in Parkinson's Disease and Idiopathic REM sleep behavior disorder patients~* history of prescription of antibiotic treatment, acute gastrointestinal illness or hospitalization for an acute medical pathology or for a surgical procedure in the last month~* anticoagulant treatment or coagulopathy~* pregnant or breastfeeding women, woman not benefiting from effective contraception if of childbearing age~* adults under tutorship, curatorship or under legal protection~For patients with Idiopathic REM sleep behavior disorder:~- presence of Parkinson's Disease according to United Kindom Parkinson's Disease Brain Bank criteria~For control:~* presence of a Parkinson's Disease according to United Kindom Parkinson's Disease Brain Bank criteria~* complaint of nighttime unrest in favor of a probable Idiopathic REM sleep behavior disorder

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Idiopathic REM sleep behavior disorders (Type: OTHER): Group of 20 Patients with an Idiopathic REM sleep behavior disorder confirmed by video-polysomnography (International Classification of Sleep Disorders-3 criteria), not explained by a pathology (narcolepsy, brainstem injury, neurodegenerative disease)
- Beginning Parkinson's disease (Type: OTHER): Group of 20 patients with Parkinson's Disease which has been progressing for less than 5 years and who have not received dopatherapy
- Parkinson's disease state Phase (Type: OTHER): Group of 20 patients with Parkinson's Disease for more than 5 years
- Control (Type: OTHER): Group of 20 patients undergoing coloscopy for family screening for digestive polyps

Based on this trial design, predict the completion outcome and termination type (if applicable).