EmPHasis-10 health-related quality of life score predicts outcomes in patients with idiopathic and connective tissue disease-associated pulmonary arterial hypertension: results from a UK multicentre study.

Health-related quality of life (HRQoL) scores assess symptom burden in pulmonary arterial hypertension (PAH) but data regarding their role in prognostication and risk stratification are limited. We assessed these relationships using the emPHasis-10 HRQoL measure.1745 patients with idiopathic PAH (IPAH), drug-induced PAH (DPAH), heritable PAH (HPAH) (collectively "(I/D/H)PAH"), or connective tissue disease-associated PAH (CTD-PAH), who had completed emPHasis-10 questionnaires at one of six UK referral centres between 2014 and 2017, were identified. Correlations with exercise capacity and World Health Organization (WHO) functional class were assessed, and exploratory risk stratification thresholds were tested.Moderate correlations were seen between emPHasis-10 scores and 6-min walk distance (r=-0.546), incremental shuttle walk distance (r=-0.504) and WHO functional class (r=0.497) (all p<0.0001). Distribution of emPHasis-10 score differed significantly between each WHO functional class (all p<0.0001). On multivariate analysis, emPHasis-10 score, but not WHO functional class, was an independent predictor of mortality. In a risk stratification approach, scores of 0-16, 17-33 and 34-50 identified incident patients with 1-year mortality of 5%, 10% and 23%, respectively. Survival of patients in WHO functional class III could be further stratified using an emPHasis-10 score ≥34 (p<0.01). At follow-up, patients with improved emPHasis-10 scores had improved exercise capacity (p<0.0001) and patients who transitioned between risk groups demonstrated similar survival to patients originally in those risk groups.The emPHasis-10 score is an independent prognostic marker in patients with (I/D/H)PAH or CTD-PAH. It has utility in risk stratification in addition to currently used parameters. Improvement in emPHasis-10 score is associated with improved exercise capacity.

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Conflict of interest: R.A. Lewis reports non-financial support for meeting attendance from Actelion Pharmaceuticals, outside the submitted work. Conflict of interest: I. Armstrong has nothing to disclose. Conflict of interest: C. Bergbaum has nothing to disclose. Conflict of interest: M.J. Brewis has nothing to disclose. Conflict of interest: J. Cannon has nothing to disclose. Conflict of interest: A. Charalampopoulos reports grants, personal fees and non-financial support from Actelion Pharmaceuticals, personal fees and non-financial support from Novartis, and grants from Bayer and GSK, outside the submitted work. Conflict of interest: A.C. Church has nothing to disclose. Conflict of interest: J.G. Coghlan has nothing to disclose. Conflict of interest: R.J. Davies has nothing to disclose. Conflict of interest: K. Dimopoulos has nothing to disclose. Conflict of interest: C. Elliot reports personal fees for advisory board work and lectures from Actelion Pharmaceuticals, GlaxoSmithKline and Bayer, as well as grants from Pfizer, Actelion Pharmaceuticals and Bayer, outside the submitted work. Conflict of interest: J.S.R. Gibbs reports personal fees from Acceleron, Arena, Bayer, Complexa, Pfizer and GSK, as well as grants and personal fees from Actelion and United Therapeutics, outside the submitted work. Conflict of interest: W. Gin-Sing has nothing to disclose. Conflict of interest: G. Haji has nothing to disclose. Conflict of interest: A.G. Hameed has nothing to disclose. Conflict of interest: L.S. Howard has nothing to disclose. Conflict of interest: M.K. Johnson reports grants and personal fees for meeting attendance, lectures and advisory board work from Actelion and MSD, outside the submitted work. Conflict of interest: A. Kempny has nothing to disclose. Conflict of interest: D.G. Kiely reports grants, personal fees and non-financial support from Actelion, Bayer and GSK, as well as personal fees and non-financial support from MSD, outside the submitted work. Conflict of interest: F. Lo Giudice has nothing to disclose. Conflict of interest: C. McCabe has nothing to disclose. Conflict of interest: A.J. Peacock has nothing to disclose. Conflict of interest: O. Peleyeju has nothing to disclose. Conflict of interest: J. Pepke-Zaba has nothing to disclose. Conflict of interest: G. Polwarth has nothing to disclose. Conflict of interest: L. Price reports educational grants from Actelion J&J, during the conduct of the study. Conflict of interest: I. Sabroe reports grants and personal fees for advisory board work from AstraZeneca, as well as grants from GSK, outside the submitted work. Conflict of interest: B.E. Schreiber has nothing to disclose. Conflict of interest: K. Sheares reports educational support from Actelion, Bayer and GSK, as well as personal fees for lectures and consultancy from Actelion, outside the submitted work. Conflict of interest: D. Taboada reports fees for lectures and education and travel grants from Actelion, Bayer, GlaxoSmithKline, Lilly, MDS and Pfizer, outside the submitted work. Conflict of interest: A.A.R. Thompson reports grants from the British Heart Foundation (Intermediate Clinical Fellowship FS/18/13/3328), during the conduct of the study, as well as non-financial support for travel to meetings from Actelion Pharmaceuticals Ltd, outside the submitted work. Conflict of interest: M.R. Toshner has nothing to disclose. Conflict of interest: I. Wanjiku has nothing to disclose. Conflict of interest: S.J. Wort has nothing to disclose. Conflict of interest: J. Yorke has nothing to disclose. Conflict of interest: R. Condliffe reports grants, personal fees and non-financial support from Actelion Pharmaceuticals and Bayer, as well as grants from GSK, outside the submitted work.