Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients

Abstract Background Research about pediatric patients’ perspective on mucopolysaccharidosis type VI (MPS VI) and its impact on daily life is limited. We aimed to identify the disease concepts of interest that most impact function and day-to-day life of pediatric patients with MPS VI, and to consider...

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Autores principales: Beth Leiro, Dawn Phillips, Melanie Duiker, Paul Harmatz, Sharon Charles
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Publicado: BMC 2021
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spelling oai:doaj.org-article:c6d91072cc7f44da8bb9faffaabf22b12021-12-05T12:16:59ZMucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients10.1186/s13023-021-02113-81750-1172https://doaj.org/article/c6d91072cc7f44da8bb9faffaabf22b12021-12-01T00:00:00Zhttps://doi.org/10.1186/s13023-021-02113-8https://doaj.org/toc/1750-1172Abstract Background Research about pediatric patients’ perspective on mucopolysaccharidosis type VI (MPS VI) and its impact on daily life is limited. We aimed to identify the disease concepts of interest that most impact function and day-to-day life of pediatric patients with MPS VI, and to consider clinical outcome assessments (COAs) that may potentially measure meaningful improvements in these concepts. Methods Potential focus group participants were identified by the National MPS Society (USA) and invited to participate if they self-reported a clinician-provided diagnosis of MPS VI and were 4 to 18 years, receiving enzyme replacement therapy (ERT), and available to attend a 1-day focus group with their caregiver in Dallas, TX, USA. The focus group consisted of a series of polling and open-ended concept elicitation questions and a cognitive debriefing session. The discussion was audio recorded, transcribed verbatim, and analyzed to identify disease concepts of interest and functional impacts most relevant to participants. Results Overall, caregivers (n = 9) and patients with MPS VI (n = 9) endorsed that although their children/they receive ERT, residual symptoms exist and impact health-related quality of life. The key disease concepts of interest identified were impaired mobility, upper extremity and fine motor deficits, pain, and fatigue. Pain was unanimously reported by all patients across many areas of the body and impacted daily activity. Key disease concepts were mapped to a selection of pediatric COAs including generic measures such as PROMIS®, PODCI, CHAQ, and PedsQL™. Caregivers endorsed the relevance of PODCI and PROMIS Upper Extremity, Mobility, and Pain items and all patients completed the NIH Toolbox Pegboard Dexterity Test. Additional COAs that aligned with the disease concepts included range of motion, the 2- and 6-min walk tests, timed stair climbs, Bruininks-Oseretsky Test of Motor Proficiency, 2nd edition, grip strength, pain visual analog scale, and the Faces Pain Scale-Revised. Conclusion An MPS VI focus group of pediatric patients and their caregivers identified impaired mobility, upper extremity and fine motor deficits, pain, and fatigue as key disease concepts of interest. These disease concepts were mapped to existing pediatric COAs, which were provided to the group for endorsement of their relevance.Beth LeiroDawn PhillipsMelanie DuikerPaul HarmatzSharon CharlesBMCarticleClinical Outcome AssessmentFocus GroupsMucopolysaccharidosis VIPainPatient Reported Outcome MeasuresPediatricsMedicineRENOrphanet Journal of Rare Diseases, Vol 16, Iss 1, Pp 1-13 (2021)
institution DOAJ
collection DOAJ
language EN
topic Clinical Outcome Assessment
Focus Groups
Mucopolysaccharidosis VI
Pain
Patient Reported Outcome Measures
Pediatrics
Medicine
R
spellingShingle Clinical Outcome Assessment
Focus Groups
Mucopolysaccharidosis VI
Pain
Patient Reported Outcome Measures
Pediatrics
Medicine
R
Beth Leiro
Dawn Phillips
Melanie Duiker
Paul Harmatz
Sharon Charles
Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients
description Abstract Background Research about pediatric patients’ perspective on mucopolysaccharidosis type VI (MPS VI) and its impact on daily life is limited. We aimed to identify the disease concepts of interest that most impact function and day-to-day life of pediatric patients with MPS VI, and to consider clinical outcome assessments (COAs) that may potentially measure meaningful improvements in these concepts. Methods Potential focus group participants were identified by the National MPS Society (USA) and invited to participate if they self-reported a clinician-provided diagnosis of MPS VI and were 4 to 18 years, receiving enzyme replacement therapy (ERT), and available to attend a 1-day focus group with their caregiver in Dallas, TX, USA. The focus group consisted of a series of polling and open-ended concept elicitation questions and a cognitive debriefing session. The discussion was audio recorded, transcribed verbatim, and analyzed to identify disease concepts of interest and functional impacts most relevant to participants. Results Overall, caregivers (n = 9) and patients with MPS VI (n = 9) endorsed that although their children/they receive ERT, residual symptoms exist and impact health-related quality of life. The key disease concepts of interest identified were impaired mobility, upper extremity and fine motor deficits, pain, and fatigue. Pain was unanimously reported by all patients across many areas of the body and impacted daily activity. Key disease concepts were mapped to a selection of pediatric COAs including generic measures such as PROMIS®, PODCI, CHAQ, and PedsQL™. Caregivers endorsed the relevance of PODCI and PROMIS Upper Extremity, Mobility, and Pain items and all patients completed the NIH Toolbox Pegboard Dexterity Test. Additional COAs that aligned with the disease concepts included range of motion, the 2- and 6-min walk tests, timed stair climbs, Bruininks-Oseretsky Test of Motor Proficiency, 2nd edition, grip strength, pain visual analog scale, and the Faces Pain Scale-Revised. Conclusion An MPS VI focus group of pediatric patients and their caregivers identified impaired mobility, upper extremity and fine motor deficits, pain, and fatigue as key disease concepts of interest. These disease concepts were mapped to existing pediatric COAs, which were provided to the group for endorsement of their relevance.
format article
author Beth Leiro
Dawn Phillips
Melanie Duiker
Paul Harmatz
Sharon Charles
author_facet Beth Leiro
Dawn Phillips
Melanie Duiker
Paul Harmatz
Sharon Charles
author_sort Beth Leiro
title Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients
title_short Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients
title_full Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients
title_fullStr Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients
title_full_unstemmed Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): defining and measuring functional impacts in pediatric patients
title_sort mucopolysaccharidosis type vi (maroteaux-lamy syndrome): defining and measuring functional impacts in pediatric patients
publisher BMC
publishDate 2021
url https://doaj.org/article/c6d91072cc7f44da8bb9faffaabf22b1
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