PMID- 32680480 OWN - NLM STAT- MEDLINE DCOM- 20210125 LR - 20210125 IS - 1471-2261 (Electronic) IS - 1471-2261 (Linking) VI - 20 IP - 1 DP - 2020 Jul 17 TI - Efficacy and safety of ambrisentan in Chinese patients with connective tissue disease-pulmonary arterial hypertension: a post-hoc analysis. PG - 339 LID - 10.1186/s12872-020-01591-1 [doi] LID - 339 AB - BACKGROUND: The efficacy and safety of ambrisentan has been previously evaluated in Chinese patients with pulmonary arterial hypertension (PAH). This post-hoc analysis assessed the efficacy and safety of ambrisentan in a subgroup of connective tissue disease (CTD) patients with PAH. METHODS: In this open-label, single-arm study, patients received ambrisentan 5 mg once daily for 12 weeks, followed by 12-week dose titration period (dose up to 10 mg). Efficacy endpoints included change from baseline in exercise capacity (measured by 6-min walk test [6MWT]), N-terminal pro B type natriuretic peptide (NT-proBNP) plasma levels, WHO Functional Class (FC) and Borg Dyspnoea Index (BDI) scores from baseline to weeks 12 and 24. Safety endpoints included time to clinical worsening and incidence of adverse events (AEs). RESULTS: In total, 71 Chinese patients with CTD-PAH were included in this analysis. Ambrisentan treatment significantly improved exercise capacity (6MWT) from baseline (mean: 366.4 m) to week 12 (63.8 m, p < 0.001) and week 24 (73.2 m, p < 0.001). A significant reduction in NT-proBNP levels was observed from baseline (mean: 1837.5 ng/L) to week 12 (- 1156.8 ng/L, p < 0.001) and week 24 (- 1095.5 ng/L, p < 0.001). BDI scores decreased significantly at week 12 (- 0.6, p < 0.001) and week 24 (- 0.4, p = 0.002) from baseline (mean: 2.7). The WHO FC improved in 29 (40.8%) and 34 (47.9%) patients at weeks 12 and 24, respectively. Adverse events were reported in 52 (73.2%) patients. One patient (1.4%) experienced clinical worsening at week 24. CONCLUSION: Ambrisentan showed significant improvement in exercise capacity and no clinical worsening in the majority of Chinese patients with CTD-PAH in the 24-week treatment period. The AEs observed in the CTD-PAH subgroup were consistent with the known safety profile of ambrisentan in the overall Chinese PAH population. TRIAL REGISTRATION: ClinicalTrial.gov Identifier, https://clinicaltrials.gov/, NCT01808313 Registration date (first time): February 28, 2013. FAU - Li, Mengtao AU - Li M AD - Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, National Clinical Research Center for Immunologic Diseases, Ministry of Science & Technology, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China. FAU - Jing, Zhi-Cheng AU - Jing ZC AD - Key Lab of Pulmonary Vascular Medicine & FuWai Hospital, State Key lab of Cardiovascular disease, National center for Cardiovascular disease, Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China. FAU - Li, Yang AU - Li Y AD - 2nd Affiliated Hospital of Harbin Medical University, Harbin, China. FAU - Huo, Yong AU - Huo Y AD - 1st Affiliated Hospital of Peking University, Beijing, China. FAU - Yu, Zaixin AU - Yu Z AD - Xiangya Hospital Central-South University, Changsha, Hunan, China. FAU - Zhang, Gangcheng AU - Zhang G AD - Wuhan Asia Heart Hospital, Wuhan, Hubei, China. FAU - Zhu, Ping AU - Zhu P AD - 1st Affiliated Hospital of the Fourth Military Medical University, Xi'an, Shaanxi, China. FAU - Liu, Jinming AU - Liu J AD - Shanghai Pulmonary Hospital, Tongji University, Shanghai, China. FAU - Ji, Qiushang AU - Ji Q AD - Qilu Hospital, Shandong University, Jinan, Shandong, China. FAU - Wu, Bingxiang AU - Wu B AD - 2nd Affiliated Hospital of Harbin Medical University, Harbin, China. FAU - Zhong, Jinhua AU - Zhong J AD - GlaxoSmithKline (China) R&D Company Limited, Shanghai, China. FAU - Wang, Pingping AU - Wang P AD - GlaxoSmithKline (China) R&D Company Limited, Shanghai, China. FAU - Zhu, Wenjing AU - Zhu W AD - GlaxoSmithKline (China) R&D Company Limited, Shanghai, China. FAU - Zeng, Xiaofeng AU - Zeng X AUID- ORCID: 0000-0002-3883-2318 AD - Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, National Clinical Research Center for Immunologic Diseases, Ministry of Science & Technology, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China. xiaofeng.zeng@cstar.org.cn. LA - eng SI - ClinicalTrials.gov/NCT01808313 PT - Clinical Trial, Phase III PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20200717 PL - England TA - BMC Cardiovasc Disord JT - BMC cardiovascular disorders JID - 100968539 RN - 0 (Antihypertensive Agents) RN - 0 (Biomarkers) RN - 0 (Endothelin A Receptor Antagonists) RN - 0 (Peptide Fragments) RN - 0 (Phenylpropionates) RN - 0 (Pyridazines) RN - 0 (pro-brain natriuretic peptide (1-76)) RN - 114471-18-0 (Natriuretic Peptide, Brain) RN - HW6NV07QEC (ambrisentan) SB - IM MH - Adult MH - Antihypertensive Agents/adverse effects/*therapeutic use MH - Beijing MH - Biomarkers/blood MH - Connective Tissue Diseases/*complications/diagnosis MH - Endothelin A Receptor Antagonists/adverse effects/*therapeutic use MH - Exercise Tolerance/drug effects MH - Female MH - Humans MH - Male MH - Middle Aged MH - Natriuretic Peptide, Brain/blood MH - Peptide Fragments/blood MH - Phenylpropionates/adverse effects/*therapeutic use MH - Pulmonary Arterial Hypertension/diagnosis/*drug therapy/*etiology/physiopathology MH - Pyridazines/adverse effects/*therapeutic use MH - Recovery of Function MH - Time Factors MH - Treatment Outcome MH - Young Adult PMC - PMC7367256 OTO - NOTNLM OT - Ambrisentan OT - Chinese OT - Exercise capacity COIS- Jinhua Zhong, Wenjing Zhu and Pingping Wang were employees of GSK during the conduct of this study and manuscript development. All other authors have nothing to disclose. EDAT- 2020/07/19 06:00 MHDA- 2021/01/26 06:00 PMCR- 2020/07/17 CRDT- 2020/07/19 06:00 PHST- 2019/05/29 00:00 [received] PHST- 2020/06/16 00:00 [accepted] PHST- 2020/07/19 06:00 [entrez] PHST- 2020/07/19 06:00 [pubmed] PHST- 2021/01/26 06:00 [medline] PHST- 2020/07/17 00:00 [pmc-release] AID - 10.1186/s12872-020-01591-1 [pii] AID - 1591 [pii] AID - 10.1186/s12872-020-01591-1 [doi] PST - epublish SO - BMC Cardiovasc Disord. 2020 Jul 17;20(1):339. doi: 10.1186/s12872-020-01591-1.