Impulse control disorders and related behaviors (ICDRBs) are characterized by pathological gambling, compulsive shopping or eating, and hypersexuality, but other related behaviors have been described, e.g. hobbyism, and punding. ICDRBs are frequent in Parkinson's Disease (PD), affecting up to 50% of the patients after 5 years with major medical, social, and legal impact, with life changing consequences for patients and caregivers. The main risk factor is dopaminergic therapy, particularly the cumulative dose of dopamine agonists (DA). On the other hand, the dopaminergic therapy is necessary to control motor symptoms, and DA have demonstrated efficacy in delaying motor complications occurring in PD. Ideally, dopaminergic therapy would have to be adjusted to the individual risk of developing ICRDBs to maximize the benefit/risk ratio of each drug. However, despite several clinical risk factors associated with the risk of ICDRBs (in addition to the dopaminergic therapy), it is still not possible to predict their risk at the individual level, and not every patient treated with dopaminergic medications will develop ICDRBs. A machine learning algorithm to predict ICDRBs, based on clinical data, validated by cross-validation on independent replication cohorts has been developed. The PREVENT-ICD study proposes to test the efficacy of a new application, ICD-Shield, based on an algorithm to predict and prevent ICDs,in a multicenter randomized controlled trial to prevent ICDRBs in PD patients by proposing to the clinician treatment adjustment according to the risk predicted by the algorithm, as compared to the standard of care (SoC)
Male and female ≥ 18 years old
Diagnosis of PD according to the 2015 Movement Disorders Society criteria (Postuma et al., Mov Disord. 2015), with bradykinesia AND at least ONE of the following: muscular rigidity, or resting tremor; with no other suspected cause of parkinsonism
Disease duration below 6 years included
No ongoing clinically significant (Mild or above) ICDRBs (any ASBPD part IV subscores in any of the items 3 to 5 and 7 to 10 each <2)
Atypical or secondary parkinsonism such as supranuclear palsy, multisystem atrophy or drug-induced parkinsonism, etc...
Patients with a cognitive or psychiatric disorder preventing patient's participation as per investigator's judgement
Not willing to participate to the Clinical Investigation or to sign the consent
Pregnant or lactating woman, or WOCBP tested positive in <serum or urine> pregnancy test
Parallel
Algorithm-guided group
DeviceAfter the evaluation of the patient and the clinical inputs entered in the ICD SHIELD app including the planned choice of prescription by the neurologist for the next period, the clinician will receive the therapeutic approach recommended by the ICD SHIELD app depending on the output given by the algorithm. The clinician can repeat the use of the app if he/she plans to try various choice of prescription in the app if deemed necessary, but a single use is recommended at each visit. The neurologist will have to follow the recommendation of the ICD SHIELD app as much as possible unless judged inappropriate. The neurologist makes the final decision.
Standard of Care (SoC) group
BehavioralIn the SoC arm the patient treatment will be adapted by the neurologistbased only on their clinical appreciation and international guidelines.
Rate of patients with at least one clinically significant ICDRBs, i.e mild or above (any ASBPD score at 2 or above in any of the subcategories 3 to 5 and 7 to 10 of part IV) over the 3 year-follow up.
ICDRBs will be screened for, every 6 months, with the internationally validated Ardouin Scale of Behavior in PD (ASBPD), according to scoring instructions, by a neuropsychologist or the neurologist trained for the scale. The diagnosis of a clinically significant ICDRB (MILD or above) relies on part IV of the ASBPD, hyperdopaminergic behaviors, for patients who score at 2 or above in any of the subcategories 3 to 5 and 7 to 10
Perception of global disease severity by the patient
Change in disease severity of PD on the Patient Global Impression of Improvement (PGI-I) scale filled by the patient over the 3 year-long-follow up. The PGI is a Patient Global Impression 7-point scale that requires the rating of the severity of the patient's illness at the time of assessment. It is assessed by asking the patient at each visit which alternative described how they had felt during the last 7 days as compared to how they felt at the baseline observation. A higher value indicates increased improvement from Clinical Investigation start, ranging from 1=very much worse to 7=very much improved.
Perception of global disease severity by the clinician
Change in disease severity of PD on the Clinical Global Impression of Improvement (CGI-I) scale filled by the clinician over the 3 year-long-follow up. The Change in the Neurologist (clinician) Global Impression of Improvement (CGI-I) provides a brief, stand-alone assessment of the clinician's view of the patient's global functioning prior to and after initiating a study medication. The Clinical Global Impression-Improvement scale rates total improvement on a 7-point scale: 1= Very much improved; 2= Much improved; 3= Minimally improved; 4= No change; 5= Minimally worse; 6= Much worse; 7= Very much worse.
Time to onset of first occurrence of clinically significant ICDRBs
Time to onset of a first clinically significant ICDRBs, i.e mild or above, defined as any ASBPD score at 2 or above in any of the subcategories 3 to 5 and 7 to 10 of part IV over the 3 year-long-follow up.
Global severity of ICDRBs at time of first occurrence on the QUIP-RS score
Severity of ICDRBs at time of first occurrence assessed on the Questionnaire For Impulsive-Compulsive Disorders In Parkinson's Disease-Rating Scale (QUIP-RS) score (Score ranges from 0 to 112, a higher score reflecting a more severe ICDRB) over the 3 year-long-follow up.
Cumulative severity of ICDRBs
Cumulative severity of ICDRBs within the 3-year period assessed by the sum of the QUIP-RS score at each visit (M9, M18, M27, M36)
Subtypes of ICDRBs
Change in each subtype of ICDRBs within the 3-year period assessed by each respective QUIP-RS sub-score (sub-scores A to G). Score ranges from 0 to 16 for each category. A higher score reflects a more severe ICD.
Patient quality of life
Change in the quality of life measured by PDQ-39 scale score over the 3 year-follow up. A higher score reflects a poorer quality of life.
Body weight change
Change in body weight (in kg, measured at each patient visit) over the 3 year-long-follow up
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Assistance Publique - Hôpitaux de Paris
Lead sponsor
NS-PARK Network
Collaborator
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