Evidence map›Paper›PMID 40358908›Full record

ArticleNeurology and therapy2025

Understanding the Patient Experience of Advanced Parkinson's Disease: Qualitative Research with Patients and Expert Clinicians to Identify Symptoms and Associated Health-Related Quality of Life Impacts.

Nicola Williamson, Thomas Morel, Helena Bradley, Aoife Lydon, Molly Clifford, Patrick Cronin, Milton Biagioni

Abstract read
In one paragraph

Article in Neurology and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. What's in a name? reframing advanced Parkinson's disease as a multidimensional state.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  2. Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Nicola WilliamsonUCB Pharma, Slough, UK. nicola.williamson@ucb.com.ORCID http://orcid.org/0009-0003-1873-5312
Thomas MorelUCB Pharma, Brussels, Belgium.ORCID http://orcid.org/0000-0002-0690-5359
Helena BradleyAdelphi Values, Patient-Centered Outcomes, Bollington, UK.ORCID http://orcid.org/0000-0002-7077-2183
Aoife LydonAdelphi Values, Patient-Centered Outcomes, Bollington, UK.
Molly CliffordAdelphi Values, Patient-Centered Outcomes, Bollington, UK.ORCID http://orcid.org/0000-0002-9707-465X
Patrick CroninAdelphi Values, Patient-Centered Outcomes, Bollington, UK.ORCID http://orcid.org/0009-0005-8881-1856
Milton BiagioniUCB Pharma, Brussels, Belgium.ORCID http://orcid.org/0000-0003-1985-8923

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionParkinson's disease (PD) is a progressive neurodegenerative condition, characterized by motor symptoms (MS) and non-motor symptoms (NMS). Currently, there is no global definition of advanced PD, but those in advanced stages experience diverse and severe symptomatology, and significant impacts to their health-related quality of life (HRQoL). This qualitative interview study aimed to explore the experience of symptoms and HRQoL impacts of advanced PD from the patient and clinician perspective and identify key concepts for assessment in PD clinical trials.

methodsA targeted review of literature and qualitative concept elicitation interviews conducted with people with advanced PD (N = 20) and expert clinicians (N = 3) in the US aimed to identify symptoms of advanced PD and their impact on HRQoL. People with advanced PD (PwP) were defined as those diagnosed ≥ 5 years, experiencing ON/OFF motor fluctuations despite levodopa therapy, and classified as modified Hoehn and Yahr stages 2-4.

resultsIn total, 65 symptoms (48 NMS, 17 MS) were identified across the reviewed literature and qualitative interviews. The most frequently reported MS included tremor, rigidity, balance issues, and slowness of movement. Several NMS were also frequently reported by participants, including fatigue, cognitive dysfunction (e.g., difficulty thinking), neuropsychiatric symptoms (e.g., apathy), pain, sleep problems, urinary dysfunction, autonomic dysfunction, excessive daytime sleepiness, gastrointestinal dysfunction, and sensory dysfunction. Participants reported these to impact HRQoL, including daily activities, emotional functioning, physical functioning, social functioning, work/study, and financial well-being.

conclusionThe study provides in-depth insights into the symptoms and HRQoL impacts experienced by those with advanced PD. A comprehensive conceptual model of the patient experience of advanced PD was developed to support the identification of relevant concepts for assessment in PD clinical trials.

Indexed as

Advanced Parkinson’s diseaseConceptual modelHealth-related quality of lifeLiterature reviewLived experienceMotor symptomsNon-motor symptomsParkinson’s diseaseQualitative interviews

Identifiers

PMID40358908
PMCPMC12255601

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.