Objective. To assess the utility of B-type natriuretic peptide (BNP) and N-terminal pro-BNP (NT-proBNP) in detecting and monitoring pulmonary hypertension (PH) in systemic sclerosis (SSc). Methods. PHAROS is a multicenter prospective cohort of SSc patients at high risk for developing pulmonary arterial hypertension (SSc-AR-PAH) or with a definitive diagnosis of SSc- PH. We evaluated 1) the sensitivity and specificity of BNP≥64 and NT-proBNP ≥ 210 pg/mL for the detection of SSc-PAH and/or SSc-PH in the SSc-ARPAH population; 2) baseline and longitudinal BNP and NT-proBNP levels as predictors of progression to SSc-PAH and/or SSc-PH; 3) baseline BNP≥180, NT-proBNP≥553 pg/mL, and longitudinal changes in BNP and NT-proBNP as predictors of mortality in SSc-PH diagnosed patients. Results. 172 SSc-PH and 157 SSc-ARPAH patients had natriuretic peptide levels available. Median BNP and NTproBNP were significantly higher in the SSc-PH versus SSc-AR-PAH group. The sensitivity and specificity for SSc- PAH detection using baseline BNP≥64 pg/mL was 71% and 59%; and for NTproBNP≥ 210 pg/mL, 73% and 78%. NT-proBNP showed stronger correlations with haemodynamic indicators of right ventricular dysfunction than BNP. Baseline creatinine, RVSP > 40 mmHg, and FVC%:DLCO% ratio ≥1.8 were associated with progression from SSc-ARPAH to SSc-PH but no association with individual or combined baseline BNP and NT-proBNP levels was observed. Baseline and follow-up BNP or NTproBNP levels were not predictive of death, however, a composite BNP/NTproBNP group predicted mortality (HR 3.81 (2.08-6.99), p < .0001). Conclusion. NT-proBNP may be more useful than BNP in the detection and monitoring of PAH in SSc patients, but additional studies are necessary.
|Original language||English (US)|
|Journal||Clinical and Experimental Rheumatology|
|State||Published - 2017|
Bibliographical noteFunding Information:
The PHAROS Registry was initially funded by Actelion, the Scleroderma Foundation and the Sibley Foundation, with ongoing funding by Gilead. However, the sponsors did not participate in the writing, study design, collection, analysis or interpretation of the data.
© Clinical and Experimental Rheumatology 2017.
- Pulmonary hypertension
- Systemic sclerosis