The Use of Patient-Reported Outcome Measures in Rare Diseases and Implications for Health Technology Assessment

Amanda Whittal (), Michela Meregaglia and Elena Nicod
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Amanda Whittal: SDA Bocconi School of Management
Michela Meregaglia: SDA Bocconi School of Management
Elena Nicod: SDA Bocconi School of Management

The Patient: Patient-Centered Outcomes Research, 2021, vol. 14, issue 5, No 5, 485-503

Abstract: Abstract Background Patient-reported outcome measures (PROMs) are used in health technology assessment (HTA) to measure patient experiences with disease and treatment, allowing a deeper understanding of treatment impact beyond clinical endpoints. Developing and administering PROMs for rare diseases poses unique challenges because of small patient populations, disease heterogeneity, lack of natural history knowledge, and short-term studies. Objective This research aims to identify key factors to consider when using different types of PROMs in HTA for rare disease treatments (RDTs). Methods A scoping review of scientific and grey literature was conducted, with no date or publication type restrictions. Information on the advantages of and the challenges and potential solutions when using different types of PROMs for RDTs, including psychometric properties, was extracted and synthesized. Results Of 79 records from PubMed, 32 were included, plus 12 records from the grey literature. PROMs for rare diseases face potential data collection and psychometric challenges resulting from small patient populations and disease heterogeneity. Generic PROMs are comparable across diseases but not sensitive to disease specificities. Disease-specific instruments are sensitive but do not exist for many rare diseases and rarely provide the utility values required by some HTA bodies. Creating new PROMs is time and resource intensive. Potential solutions include pooling data (multi-site/international data collection), using computer-assisted technology, or using generic and disease-specific PROMs in a complementary way. Conclusions PROMs are relevant in HTA for RDTs but pose a number of difficulties. A deeper understanding of the potential advantages of and the challenges and potential solutions for each can help manage these difficulties.

Date: 2021
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DOI: 10.1007/s40271-020-00493-w

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