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Primary Parkinsonian Pain: Clinical Association and Phenotype (PHENOPAIN)

9. juli 2026 opdateret af: University Hospital, Clermont-Ferrand

Among the different types of pain observed in Parkinson's disease, primary parkinsonian pain (PPP) is the most severe, the most difficult to treat, but also the least well characterized and the hardest to describe, not only by patients but also by neurologists. Consequently, PPP remains difficult to identify, even for clinicians with expertise in Parkinson's disease.

Nevertheless, patients with Parkinson's disease who experience PPP appear to exhibit certain demographic and clinical characteristics that may help distinguish them from other patients, including a poorer motor response to levodopa, a stronger association with sleep disturbances, and cognitive and behavioral features such as impulse control disorders (ICDs). PPP may therefore be associated with a specific disease phenotype supported by distinct pathophysiological mechanisms.

Recently, a disease progression model proposed the existence of a "Brain-First" subtype (characterized by disease onset in the brainstem) and a "Body-First" subtype (characterized by disease onset in the gastrointestinal system). Several clinical markers appear to distinguish these subtypes, notably the presence of REM sleep behavior disorder (RBD), which has been associated with the Body-First phenotype.

The association between PPP and RBD, as well as between PPP and the Body-First subtype, has never been investigated. We hypothesize that PPP may be associated with several clinical markers of the Body-First phenotype. Identifying such associations could facilitate the routine clinical diagnosis of PPP and, consequently, improve its management, which remains inadequate at present.

The primary objective is to assess the proportion of patients with primary parkinsonian pain according to the presence of probable RBD in Parkinson's disease.

This prospective, cross-sectional, non-interventional category 3 study (RIPH 3) will be conducted in 300 patients. Patients contacted through the France Parkinson Association and interested in participating in the study will be able to access the online questionnaire via a QR code or a web link. Completion of the questionnaire is expected to take no more than 15 minutes. This self-administered questionnaire will include collection of general data (age, sex, disease duration, initial motor symptoms, side of symptom onset predominance, and comorbidities), assessments of pain, migraine, sleep, constipation, olfaction, anxiety and depression and impulse control disorders.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Observationel

Tilmelding (Anslået)

300

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Patients will be contacted through the France Parkinson Association. If interested in the study, they will be able to access the online questionnaire hosted on the REDCap platform via a QR code or a web link.

Beskrivelse

Inclusion Criteria:

  • Age ≥ 18 years.
  • French-speaking.
  • Diagnosis of Parkinson's disease confirmed by a neurologist.

Exclusion Criteria:

  • Atypical parkinsonian syndrome.
  • Patients under legal protection (guardianship, curatorship, or legal safeguard measures).

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Parkinsonian patients
Patients with a diagnosis of Parkinson's disease confirmed by a neurologist
Completion of the questionnaire is expected to take no more than 15 minutes. This self-administered questionnaire will include collection of general data (age, sex, disease duration, initial motor symptoms, side of symptom onset predominance, and comorbidities), assessments of pain, migraine, sleep, constipation, olfaction, anxiety and depression and impulse control disorders.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Presence of primary parkinsonian pain according to the 3PDQ questionnaire
Tidsramme: at day 0
This self-questionnaire is completed by the patient during the inclusion visit
at day 0
Probable REM sleep behavior disorder (RBD), as identified using the RBD-1Q (REM Sleep Behavior Disorder Single-Question Screen).
Tidsramme: at day 0
This self-questionnaire is completed by the patient during the inclusion visit
at day 0

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Presence of anosmia
Tidsramme: at day 0
Self-reported olfactory dysfunction
at day 0
Presence of constipation
Tidsramme: at day 0
Self-reported constipation dysfunction
at day 0
Presence of impulsive control disorders according the QUIP-Anytime During PD-Short (Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease)
Tidsramme: at day 0
This self-questionnaire is completed by the patient during the inclusion visit
at day 0
Presence of Anxiety and/or depression according the HADs (Hospital Anxiety and Depression scale)
Tidsramme: at day 0
This self-questionnaire is completed by the patient during the inclusion visit
at day 0
Prsence of RBD according the RBD SQ (RBD-Screening Questionnaire)
Tidsramme: at day 0
This self-questionnaire is completed by the patient during the inclusion visit
at day 0
Pain intensity according an EVA scale
Tidsramme: at day 0
patients will evaluate their pain with an EVA scale at inclusion visit
at day 0
Presence of comorbidities
Tidsramme: at day 0
Patients will report if they had comorbidities such as diabete or osteoarticular disorders.
at day 0
presence of migraines
Tidsramme: at day 0
patient will report if he had migraines
at day 0
Current antiparkinsonian and analgesic treatments
Tidsramme: at day 0
Patient will report his current antiparkinsonian and analgesic treatments
at day 0

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. september 2026

Primær færdiggørelse (Anslået)

30. september 2027

Studieafslutning (Anslået)

1. oktober 2027

Datoer for studieregistrering

Først indsendt

9. juli 2026

Først indsendt, der opfyldte QC-kriterier

9. juli 2026

Først opslået (Faktiske)

14. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

14. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. juli 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • RNI 2026 MARQUES
  • 2026-A01046-45 (Registry Identifier: n° IDRCB)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

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