F Siebenhaar1, E von Tschirnhaus1, K Hartmann2, A Rabenhorst3, P Staubach4, A Peveling-Oberhag4, N Wagner5, P Martus6, M C Carter7, D D Metcalfe7, M K Church1, M Maurer1, K Weller1. 1. Department of Dermatology and Allergy, Interdisciplinary Mastocytosis Center Charité, Charité - Universitätsmedizin Berlin, Berlin, Germany. 2. Department of Dermatology, University of Lübeck, Lübeck, Germany. 3. Department of Dermatology, University of Cologne, Cologne, Germany. 4. Department of Dermatology, University Medical Center Mainz, Mainz, Germany. 5. Department of Dermatology, Clinical Center Darmstadt, Darmstadt, Germany. 6. Department of Medical Biostatistics, Universitätsklinikum Tübingen, Tübingen, Germany. 7. Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
Abstract
BACKGROUND: Mastocytosis is a heterogeneous disease characterized by a clonal expansion of mast cells in various organs. The vast majority of patients affected suffer from signs and symptoms caused by mediator release from mast cells. Although the disease burden is high, there is currently no specific instrument to measure health-related quality of life (HRQoL) impairment in patients with mastocytosis. OBJECTIVE: The aim of this study was to develop and validate a disease-specific tool to assess HRQoL impairment in patients with cutaneous and indolent systemic mastocytosis, the Mastocytosis Quality of Life Questionnaire (MC-QoL). METHODS: Sixty-two potential MC-QoL items were developed in a combined approach consisting of semi-structured patient interviews, expert input and literature research. Item selection was performed by impact analysis with 76 patients and a final review for face validity. The resulting MC-QoL was tested for validity, reliability and influence factors. In parallel, an US American-English version of the MC-QoL was developed. RESULTS: A total of 158 patients (41 CM, 41 MIS and 76 ISM) took part in the MC-QoL validation study. The final 27-item questionnaire was found to have a four-domain structure ('symptoms', 'emotions', 'social life/functioning' and 'skin'), a valid total score and an excellent test-retest reliability. Multiple regression analysis revealed disease duration, but not age, gender or skin involvement to be a significant determinant of HRQoL impairment in mastocytosis. CONCLUSIONS: The MC-QoL is the first disease-specific HRQoL questionnaire for adult patients with cutaneous and indolent systemic mastocytosis. This short, validated and reliable instrument will serve as a valuable tool in future clinical studies and in routine patient care.
BACKGROUND:Mastocytosis is a heterogeneous disease characterized by a clonal expansion of mast cells in various organs. The vast majority of patients affected suffer from signs and symptoms caused by mediator release from mast cells. Although the disease burden is high, there is currently no specific instrument to measure health-related quality of life (HRQoL) impairment in patients with mastocytosis. OBJECTIVE: The aim of this study was to develop and validate a disease-specific tool to assess HRQoL impairment in patients with cutaneous and indolent systemic mastocytosis, the Mastocytosis Quality of Life Questionnaire (MC-QoL). METHODS: Sixty-two potential MC-QoL items were developed in a combined approach consisting of semi-structured patient interviews, expert input and literature research. Item selection was performed by impact analysis with 76 patients and a final review for face validity. The resulting MC-QoL was tested for validity, reliability and influence factors. In parallel, an US American-English version of the MC-QoL was developed. RESULTS: A total of 158 patients (41 CM, 41 MIS and 76 ISM) took part in the MC-QoL validation study. The final 27-item questionnaire was found to have a four-domain structure ('symptoms', 'emotions', 'social life/functioning' and 'skin'), a valid total score and an excellent test-retest reliability. Multiple regression analysis revealed disease duration, but not age, gender or skin involvement to be a significant determinant of HRQoL impairment in mastocytosis. CONCLUSIONS: The MC-QoL is the first disease-specific HRQoL questionnaire for adult patients with cutaneous and indolent systemic mastocytosis. This short, validated and reliable instrument will serve as a valuable tool in future clinical studies and in routine patient care.
Authors: Wolfgang R Sperr; Michael Kundi; Ivan Alvarez-Twose; Bjorn van Anrooij; Joanna N G Oude Elberink; Aleksandra Gorska; Marek Niedoszytko; Karoline V Gleixner; Emir Hadzijusufovic; Roberta Zanotti; Patrizia Bonadonna; Massimiliano Bonifacio; Cecelia Perkins; Anja Illerhaus; Chiara Elena; Serena Merante; Khalid Shoumariyeh; Nikolas von Bubnoff; Roberta Parente; Mohamad Jawhar; Anna Belloni Fortina; Francesca Caroppo; Knut Brockow; Alexander Zink; David Fuchs; Alex J Kilbertus; Akif Selim Yavuz; Michael Doubek; Hans Hägglund; Jens Panse; Vito Sabato; Agnes Bretterklieber; Dietger Niederwieser; Christine Breynaert; Karin Hartmann; Massimo Triggiani; Boguslaw Nedoszytko; Andreas Reiter; Alberto Orfao; Olivier Hermine; Jason Gotlib; Michel Arock; Hanneke C Kluin-Nelemans; Peter Valent Journal: Lancet Haematol Date: 2019-10-31 Impact factor: 18.959
Authors: Polina Pyatilova; Tameem Ashry; Yanyan Luo; Jiajun He; Hanna Bonnekoh; Qingqing Jiao; Sherezade Moñino-Romero; Man Hu; Jörg Scheffel; Stefan Frischbutter; Maud A W Hermans; Bradford A Youngblood; Marcus Maurer; Frank Siebenhaar; Pavel Kolkhir Journal: Front Immunol Date: 2022-07-26 Impact factor: 8.786