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dc.contributor.authorElstein, Deborah
dc.contributor.authorBelmatoug, Nadia
dc.contributor.authorDeegan, Patrick
dc.contributor.authorGöker-Alpan, Özlem
dc.contributor.authorHughes, Derralynn A
dc.contributor.authorSchwartz, Ida Vanessa D
dc.contributor.authorWeinreb, Neal
dc.contributor.authorBonner, Nicola
dc.contributor.authorPanter, Charlotte
dc.contributor.authorFountain, Donna
dc.contributor.authorLenny, Andrew
dc.contributor.authorLongworth, Louise
dc.contributor.authorMiller, Rachael
dc.contributor.authorShah, Koonal
dc.contributor.authorSchenk, Jörn
dc.contributor.authorSen, Rohini
dc.contributor.authorZimran, Ari
dc.description.abstractBACKGROUND: Disease-specific patient-reported outcome measures (PROMs) are fundamental to understanding the impact on, and expectations of, patients with genetic disorders, and can facilitate constructive and educated conversations about treatments and outcomes. However, generic PROMs may fail to capture disease-specific concerns. Here we report the development and validation of a Gaucher disease (GD)-specific PROM for patients with type 1 Gaucher disease (GD1) a lysosomal storage disorder characterized by hepatosplenomegaly, thrombocytopenia, anemia, bruising, bone disease, and fatigue. RESULTS AND DISCUSSION: The questionnaire was initially developed with input from 85 patients or parents of patients with GD1 or GD3 in Israel. Owing to few participating patients with GD3, content validity was assessed for patients with GD1 only. Content validity of the revised questionnaire was assessed in 33 patients in the US, France, and Israel according to US Food and Drug Administration standards, with input from a panel of six GD experts and one patient advocate representative. Concept elicitation interviews explored patient experience of symptoms and treatments, and a cognitive debriefing exercise explored patients' understanding and relevance of instructions, items, response scales, and recall period. Two versions of the questionnaire were subsequently developed: a 24-item version for routine monitoring in clinical practice (rmGD1-PROM), and a 17-item version for use in clinical trials (ctGD1-PROM). Psychometric validation of the ctGD1-PROM was assessed in 46 adult patients with GD1 and re-administered two weeks later to examine test-retest reliability. Findings from the psychometric validation study revealed excellent internal consistency and strong evidence of convergent validity of the ctGD1-PROM based on correlations with the 36-item Short Form Health Survey. Most items were found to show moderate, good, or excellent test-retest reliability. CONCLUSIONS: Development of the ctGD1-PROM represents an important step forward for researchers measuring the impact of GD and its respective treatment.
dc.publisherSpringer Science and Business Media LLC
dc.rightsAttribution 4.0 International
dc.sourceessn: 1750-1172
dc.sourcenlmid: 101266602
dc.subjectContent validation
dc.subjectGaucher disease
dc.subjectLysosomal storage disorder
dc.subjectPatient-reported outcomes
dc.subjectPsychometric validation
dc.subjectGaucher Disease
dc.subjectPatient Reported Outcome Measures
dc.subjectQuality of Life
dc.subjectReproducibility of Results
dc.subjectSurveys and Questionnaires
dc.titleDevelopment and validation of Gaucher disease type 1 (GD1)-specific patient-reported outcome measures (PROMs) for clinical monitoring and for clinical trials.
prism.publicationNameOrphanet J Rare Dis
dc.contributor.orcidElstein, Deborah [0000-0001-7092-0126]

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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International