Abstract
Objective: To develop a symptom-focused index to evaluate representative symptoms, treatment side effects, and emotional and functional well-being of patients with carcinoid syndrome (CS). Methods: The development of the Functional Assessment of Cancer Therapy-Carcinoid Syndrome Symptom Index (FACT-CSI) followed US Food and Drug Administration guidelines for the development of patient-reported outcome (PRO) measures and involved the following: (a) literature review; (b) interviews with 14 CS patients; (c) interviews with 9 clinicians; and (d) instrument development involving input from a range of PRO measure development and CS experts. The resulting draft instrument underwent cognitive interviews with 7 CS patients. Results: Forty-six CS sources were reviewed. Analysis of patient interviews produced 23 patient-reported symptoms. The most frequently endorsed physical symptoms were flushing, diarrhea, abdominal pain, fatigue, and food sensitivity/triggers. Seven priority CS emotional and functional themes were also identified by patients. Expert interviews revealed 12 unique priority symptoms - the most common being diarrhea, flushing, wheezing, edema, abdominal pain/cramping, fatigue, and 8 emotional and functional concerns. Through an iterative process of team and clinical collaborator meetings, data review, item reduction and measure revision, 24 items were selected for the draft symptom index representing symptoms, emotional concerns, global assessment of treatment side effects, and functional well-being. Cognitive interview results demonstrated strong content validity, including positive endorsement of item clarity (>86% across items), symptom relevance (>70% for most items), and overall measure content (86%). Conclusions: The FACT-CSI is a content-relevant, symptom-focused index reflecting the highest priority and clinically relevant symptoms and concerns of people with CS.
Original language | English (US) |
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Pages (from-to) | 850-862 |
Number of pages | 13 |
Journal | Neuroendocrinology |
Volume | 111 |
Issue number | 9 |
DOIs | |
State | Published - Aug 1 2021 |
Funding
S. Shaunfield received research funding from Ipsen, Daiichi Sankyo, Abbvie, Alexion, and EMD Serono. K.A.W. received research funding from AbbVie, is the director of communications for and part owner of FACIT.org and FACITTrans. K.K. received research funding from Ipsen, Alexion, and EMD Serono. G.J.G. received research funding from Ipsen. S.E.Y. received research funding from the American Thoracic Society Foundation. L.L. has no conflicts of interest to declare. A.B.B. serves as a consultant to Bayer, Genentech, & Novartis. D.M.H. received research funding from Genentech, Tarveda, Ipsen, Thermofisher Scientific, Advanced Accelerator Applications, and Novartis, and serves as a consultant to Lexicon, Advanced Accelerator Applications, Ipsen, Abbvie, and Novartis. J.C.Y. serves as a consultant to Novartis, Ipsen, Hutchinson MediPharma, Crinetics, Tarveda Therapeutics, and Merck Sharp & Dohme. S. Singh received honoraria from Ipsen and Novartis; received research funding from Novartis and EMD SErono. M.F. is a full-time employee of AbbVie and may own AbbVie stock or stock options. F.M. is a full-time employee of AbbVie. D.C. received research funding from Ipsen and serves as a consultant to Lexicon, Novartis, and Ipsen, and is president of FACIT.org.
Keywords
- Carcinoid syndrome
- Measure development
- Priority symptoms
- Qualitative methods
- Symptom index
ASJC Scopus subject areas
- Endocrine and Autonomic Systems
- Endocrinology
- Cellular and Molecular Neuroscience
- Endocrinology, Diabetes and Metabolism