Integrated and patient-centred management of Parkinson’s disease:a network model for reshaping chronic neurological care

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Multidisciplinary care for people with Parkinson’s disease:the new kids on the block!

INTRODUCTION: Parkinson's disease (PD) is a chronic multisystem disorder that causes a wide variety of motor and non-motor symptoms. Over time, the progressive nature of the disease increases the risk of complications such as falls and loss of independence, having a profound impact on quality of life. The complexity and heterogeneity of symptoms therefore warrant a holistic, multidisciplinary approach. Specific healthcare professionals, e.g. the movement disorders neurologist and the PD nurse specialist, are considered essential members of this multidisciplinary team. However, with our increasing knowledge about different aspects of the disease, other disciplines are also being recognized as important contributors to the healthcare team. Areas covered: The authors describe a selection of these relatively newly-recognized disciplines, including the specialist in vascular medicine, gastroenterologist, pulmonologist, neuro-ophthalmologist, urologist, geriatrician/elderly care physician, palliative care specialist and the dentist. Furthermore, they share the view of a person with PD on how patients and caregivers should be involved in the multidisciplinary team. Finally, they have included a perspective on the new role of the movement disorder neurologist, with care delivery via 'tele-neurology'. Expert commentary: Increased awareness about the potential role of these 'new' professionals will further improve disease management and quality of life of PD patients

Plain language summary: what symptoms should be measured in clinical studies for early-stage Parkinson's?

What is this summary about? Clinical studies test whether a new treatment is safe and if the treatment works in people who have a particular condition. Most current questionnaires used in clinical studies investigating Parkinson's measure symptoms in people who have been diagnosed for many years. This means that these existing questionnaires may not be useful for people living with early-stage Parkinson's, where the symptoms experienced can be quite different to later stages, or may not show if a new treatment is helpful for them. The most common symptoms in Parkinson's are involuntary shaking of parts of the body (“tremor”), slow movement (“bradykinesia”) and stiff, inflexible muscles (“rigidity”), which worsen with time. Symptoms specific to early-stage Parkinson's are not fully understood and research is ongoing in this area. New measures are therefore needed to assess the symptoms affecting people living with early-stage Parkinson's, especially the symptoms that they find most troublesome. This study investigated which symptoms are of most importance to people in the earlier stages of their condition and which would be appropriate to measure in future clinical studies. Who was involved in the study? The research team that led the study was made up of people living with Parkinson's, as well as technical experts and representatives from Parkinson's patient organizations (Parkinson's UK and the Parkinson's Foundation). The participants in the study were people living with early-stage Parkinson's and their care partners. What were the results? Slowness of movement (called “bradykinesia”) was noted as a key symptom. “Functional slowness” was especially noted. This symptom caused people to feel slower during many daily tasks, such as brushing teeth, walking and cooking. The loss of ability to move easily and freely, termed “mobility”, was also a key symptom. It was noticeable in walking abnormalities and difficulties performing “fine motor skills”. These are tasks that require precision, dexterity and coordination. Other impactful symptoms were: tremor, rigidity/stiffness, feelings of exhaustion (fatigue), depression, sleeping problems and pain. What do the results of the study mean? The personal views gathered in this study show the wide-ranging effects of early-stage Parkinson's. The study also identifies functional slowness and loss of mobility as key symptoms that would be appropriate to measure in future early-stage Parkinson's clinical studies to test if treatments are working or not. </jats:sec

Plain language summary: what symptoms should be measured in clinical studies for early-stage Parkinson's?

Acknowledgements: The authors would like to thank the Parkinson's community for participating in this study, making this research possible. The authors would like to thank Gina Walter, of Parkinson's UK, and Mary Tidwell and Sarah Diaz, of the Parkinson's Foundation, for reviewing the PLSP. The authors thank Claire Nolan, formerly the Research Involvement Manager at Parkinson's UK, for her contribution to the early stages of this research. During research for the corresponding manuscript, the authors acknowledge reference to the Fox Insight Study, which is funded by The Michael J. Fox Foundation for Parkinson's Research. The authors would also like to acknowledge and thank Dr. Milton Biagioni, of UCB Pharma, for his input into the later stages of this research and the thorough advice and review of the corresponding manuscript to ensure clinical meaningfulness; Irene de la Torre Arenas, of UCB Pharma, for her contribution to the development of the figures, and Jessica Mills, of Modus Outcomes, who facilitated the qualitative analysis. The authors would also like to thank Jessica Mills, Nadine McGale, of Modus Outcomes, and Debi Rennie and Rakhee Ghelani, formerly of Modus Outcomes, for conducting the interviews alongside Sophie Cleanthous. The authors would also like to acknowledge Paul Burns, patient expert, for his contributions to this study. Prof. Roger A. Barker is supported through the NIHR-funded Cambridge Biomedical Research Center.What is this summary about?: Clinical studies test whether a new treatment is safe and if the treatment works in people who have a particular condition. Most current questionnaires used in clinical studies investigating Parkinson's measure symptoms in people who have been diagnosed for many years. This means that these existing questionnaires may not be useful for people living with early-stage Parkinson's, where the symptoms experienced can be quite different to later stages, or may not show if a new treatment is helpful for them. The most common symptoms in Parkinson's are involuntary shaking of parts of the body (“tremor”), slow movement (“bradykinesia”) and stiff, inflexible muscles (“rigidity”), which worsen with time. Symptoms specific to early-stage Parkinson's are not fully understood and research is ongoing in this area. New measures are therefore needed to assess the symptoms affecting people living with early-stage Parkinson's, especially the symptoms that they find most troublesome. This study investigated which symptoms are of most importance to people in the earlier stages of their condition and which would be appropriate to measure in future clinical studies. Who was involved in the study?: The research team that led the study was made up of people living with Parkinson's, as well as technical experts and representatives from Parkinson's patient organizations (Parkinson's UK and the Parkinson's Foundation). The participants in the study were people living with early-stage Parkinson's and their care partners. What were the results?: Slowness of movement (called “bradykinesia”) was noted as a key symptom. “Functional slowness” was especially noted. This symptom caused people to feel slower during many daily tasks, such as brushing teeth, walking and cooking. The loss of ability to move easily and freely, termed “mobility”, was also a key symptom. It was noticeable in walking abnormalities and difficulties performing “fine motor skills”. These are tasks that require precision, dexterity and coordination. Other impactful symptoms were: tremor, rigidity/stiffness, feelings of exhaustion (fatigue), depression, sleeping problems and pain. What do the results of the study mean?: The personal views gathered in this study show the wide-ranging effects of early-stage Parkinson's. The study also identifies functional slowness and loss of mobility as key symptoms that would be appropriate to measure in future early-stage Parkinson's clinical studies to test if treatments are working or not

Development and early qualitative evidence of two novel patient-reported outcome instruments to assess daily functioning in people with early-stage Parkinson’s

Funder: UCB Pharma; doi: http://dx.doi.org/10.13039/100015661Background: Previous research on concepts that are important to people living with early-stage Parkinson’s indicated that ‘functional’ slowness, fine motor skills, and subtle gait abnormalities are cardinal concepts that are not comprehensively captured by existing patient-reported outcome (PRO) instruments that are used in clinical practice and research to assess symptoms and daily functioning within this patient population. We sought to develop novel PRO instruments to address this unmet need. Methods: PRO instrument development was led by a multidisciplinary research group, including people living with Parkinson’s (termed ‘patient experts’), as well as patient engagement and involvement, regulatory science, clinical, and outcome measurement experts. A first set of PRO instruments, termed Early Parkinson’s Function Slowness (42 items) and Early Parkinson’s Mobility (26 items), were drafted to capture ‘functional’ slowness, fine motor skills, and subtle gait abnormalities. These PRO instruments were used in cognitive debriefing interviews with people living with early-stage Parkinson’s (who were not involved with the multidisciplinary research group) to identify issues with relevance, clarity, ease of completion, conceptual overlap, or missing concepts. Results: Sixty people living with early-stage Parkinson’s were interviewed, which led to refining the items to 45 for the Early Parkinson’s Functional Slowness and 23 for the Early Parkinson’s Mobility PRO instruments. Refinement included rewording items to address clarity issues, merging or splitting items to address overlap issues, and adding new items to address missing concepts. The Early Parkinson’s Function Slowness PRO instrument resulted in a multidimensional instrument covering upper limb, complex/whole body, general activity, and cognitive functional slowness. The Early Parkinson’s Mobility PRO instrument resulted in comprehensive coverage of everyday mobility tasks, with a focus on gait concepts, plus complex/whole body, balance, and lower limb mobility. Conclusions: The Early Parkinson’s Function Slowness and Early Parkinson’s Mobility PRO instruments aim to address gaps in existing PRO instruments to measure meaningful symptoms and daily functioning in people living with early-stage Parkinson’s. Utilizing a meticulous study design led by a multidisciplinary research group that included patient experts helped to ensure that the PRO instruments were patient-centric, content valid, and meaningful from a clinical and measurement perspective

Development and early qualitative evidence of two novel patient-reported outcome instruments to assess daily functioning in people with early-stage Parkinson's.

Funder: UCB PharmaBACKGROUND: Previous research on concepts that are important to people living with early-stage Parkinson's indicated that 'functional' slowness, fine motor skills, and subtle gait abnormalities are cardinal concepts that are not comprehensively captured by existing patient-reported outcome (PRO) instruments that are used in clinical practice and research to assess symptoms and daily functioning within this patient population. We sought to develop novel PRO instruments to address this unmet need. METHODS: PRO instrument development was led by a multidisciplinary research group, including people living with Parkinson's (termed 'patient experts'), as well as patient engagement and involvement, regulatory science, clinical, and outcome measurement experts. A first set of PRO instruments, termed Early Parkinson's Function Slowness (42 items) and Early Parkinson's Mobility (26 items), were drafted to capture 'functional' slowness, fine motor skills, and subtle gait abnormalities. These PRO instruments were used in cognitive debriefing interviews with people living with early-stage Parkinson's (who were not involved with the multidisciplinary research group) to identify issues with relevance, clarity, ease of completion, conceptual overlap, or missing concepts. RESULTS: Sixty people living with early-stage Parkinson's were interviewed, which led to refining the items to 45 for the Early Parkinson's Functional Slowness and 23 for the Early Parkinson's Mobility PRO instruments. Refinement included rewording items to address clarity issues, merging or splitting items to address overlap issues, and adding new items to address missing concepts. The Early Parkinson's Function Slowness PRO instrument resulted in a multidimensional instrument covering upper limb, complex/whole body, general activity, and cognitive functional slowness. The Early Parkinson's Mobility PRO instrument resulted in comprehensive coverage of everyday mobility tasks, with a focus on gait concepts, plus complex/whole body, balance, and lower limb mobility. CONCLUSIONS: The Early Parkinson's Function Slowness and Early Parkinson's Mobility PRO instruments aim to address gaps in existing PRO instruments to measure meaningful symptoms and daily functioning in people living with early-stage Parkinson's. Utilizing a meticulous study design led by a multidisciplinary research group that included patient experts helped to ensure that the PRO instruments were patient-centric, content valid, and meaningful from a clinical and measurement perspective

Patient Experience in Early-Stage Parkinson's Disease: Using a Mixed Methods Analysis to Identify Which Concepts Are Cardinal for Clinical Trial Outcome Assessment.

Funder: UCB PharmaINTRODUCTION: Qualitative research on patient experiences in early-stage Parkinson's disease (PD) is limited. It is increasingly acknowledged that clinical outcome assessments used in trials do not fully capture the range of symptoms/impacts that are meaningful to people with early-stage PD. We aimed to conceptualize the patient experience in early-stage PD and identify, from the patient perspective, those cardinal symptoms/impacts which might be more useful to measure in clinical trials. METHODS: In a mixed-methods analysis, 50 people with early-stage PD and nine relatives were interviewed. Study design and results interpretation were led by a multidisciplinary group of patient, clinical, regulatory, and outcome measurements experts, and patient organization representatives. Identification of the cardinal concepts was informed by the relative frequency of reported concepts combined with insights from patient experts and movement disorder specialists. RESULTS: A conceptual model of the patient experience of early-stage PD was developed. Concept elicitation generated 145 unique concepts mapped across motor and non-motor symptoms, function, and impacts. Bradykinesia/slowness (notably in the form of "functional slowness"), tremor, rigidity/stiffness, mobility (particularly fine motor dexterity and subtle gait abnormalities), fatigue, depression, sleep/dreams, and pain were identified as cardinal in early-stage PD. "Functional slowness" (related to discrete tasks involving the upper limbs, complex mobility tasks, and general activities) was deemed to be more relevant than "difficulty" to patients with early-stage PD, who report being slower at completing tasks rather than encountering significant impairment with task completion. CONCLUSION: Patient experiences in early-stage PD are complex and wide-ranging, and the currently available patient-reported outcome (PRO) instruments do not evaluate many early-stage PD concepts such as functional slowness, fine motor skills, and subtle gait abnormalities. The development of a new PRO instrument, created in conjunction with people with PD, that fully assesses symptoms and the experience of living with early-stage PD, is required