PMID- 26386921 OWN - NLM STAT- MEDLINE DCOM- 20160915 LR - 20181202 IS - 1874-1754 (Electronic) IS - 0167-5273 (Linking) VI - 202 DP - 2016 Jan 1 TI - FUTURE-2: Results from an open-label, long-term safety and tolerability extension study using the pediatric FormUlation of bosenTan in pUlmonary arterial hypeRtEnsion. PG - 52-8 LID - S0167-5273(15)30309-0 [pii] LID - 10.1016/j.ijcard.2015.08.080 [doi] AB - BACKGROUND: A novel formulation of bosentan was evaluated in children with pulmonary arterial hypertension (PAH) in FUTURE-1, which characterized its pharmacokinetic and clinical profile. The subsequent phase III, open-label, long-term extension study, FUTURE-2, aimed to provide long-term tolerability, safety and exploratory efficacy data. METHODS: Children (>/=2 and <12 years) with idiopathic or heritable PAH, who completed 12-week treatment in FUTURE-1 and for whom bosentan was considered beneficial were enrolled, and continued to receive bosentan 4 mg/kg twice-daily, which could be down-titrated to 2mg/kg if not tolerated. Safety and tolerability were evaluated via treatment-emergent adverse events (AEs), serious AEs, growth, and laboratory measurements. Exploratory efficacy endpoints included time to PAH worsening and long-term survival. All analyses were conducted on pooled data of both studies. RESULTS: 36 patients were enrolled in FUTURE-1 and 33 continued in FUTURE-2. The overall median duration of exposure to bosentan was 27.7 (range 1.9-59.6) months. Treatment-emergent AEs occurred in 32 (88.9%) patients; AEs considered treatment-related in 15 (41.7%) patients. Of 51 serious AEs, three were considered treatment-related: two incidences of reported PAH worsening and one of autoimmune hepatitis. Six deaths occurred; none were considered treatment-related. Kaplan-Meier event-free estimates of PAH worsening were 78.9% and 73.6% at 2 and 4 years, respectively. CONCLUSIONS: The pediatric bosentan formulation was generally well tolerated, its safety profile comparable to that of the adult formulation when used in children. The results are in line with the efficacy profile of bosentan in previous pediatric and adult PAH studies of shorter duration. CI - Copyright (c) 2015. Published by Elsevier Ireland Ltd. FAU - Berger, Rolf M F AU - Berger RM AD - Center for Congenital Heart Diseases, Department of Paediatric Cardiology, Beatrix Children's Hospital, University Medical Centre, Groningen, The Netherlands. Electronic address: r.m.f.berger@umcg.nl. FAU - Haworth, Sheila G AU - Haworth SG AD - Institute of Child Health, University College, London, UK. FAU - Bonnet, Damien AU - Bonnet D AD - M3C-Hospital Necker Enfants Malades, Department of Paediatric Cardiology, Universite Paris Descartes, Paris, France. FAU - Dulac, Yves AU - Dulac Y AD - Department of Paediatric Cardiology, Children's Hospital, Toulouse, France. FAU - Fraisse, Alain AU - Fraisse A AD - La Timone Children's Hospital, Department of Paediatric Cardiology, Marseille, France. FAU - Galie, Nazzareno AU - Galie N AD - Institute of Cardiology, University of Bologna, Bologna, Italy. FAU - Ivy, D Dunbar AU - Ivy DD AD - Children's Hospital Colorado, Department of Pediatric Cardiology, Denver, CO, USA. FAU - Jais, Xavier AU - Jais X AD - Bicetre Hospital, Department of Pneumology, Le Kremlin-Bicetre, France. FAU - Miera, Oliver AU - Miera O AD - Deutsches Herzzentrum Berlin, Berlin, Germany. FAU - Rosenzweig, Erika B AU - Rosenzweig EB AD - Columbia University, New York, NY, USA. FAU - Efficace, Michela AU - Efficace M AD - Actelion Pharmaceuticals srl, Department of Biostatistics, Imperia, Italy. FAU - Kusic-Pajic, Andjela AU - Kusic-Pajic A AD - Actelion Pharmaceuticals Ltd., Department of Clinical Science, Allschwil, Switzerland. FAU - Beghetti, Maurice AU - Beghetti M AD - Children's Hospital, Paediatric Cardiology Unit, University of Geneva, Geneva, Switzerland. LA - eng PT - Clinical Trial, Phase III PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20150809 PL - Netherlands TA - Int J Cardiol JT - International journal of cardiology JID - 8200291 RN - 0 (Biomarkers, Pharmacological) RN - 0 (Endothelin Receptor Antagonists) RN - 0 (Sulfonamides) RN - Q326023R30 (Bosentan) SB - IM EIN - Int J Cardiol. 2016 Nov 15;223:1072-1073. PMID: 27623401 MH - Administration, Oral MH - Adult MH - Biomarkers, Pharmacological/metabolism MH - Bosentan MH - Dose-Response Relationship, Drug MH - Drug Tolerance MH - Endothelin Receptor Antagonists/administration & dosage/pharmacokinetics MH - Familial Primary Pulmonary Hypertension/*drug therapy/metabolism/mortality MH - Female MH - Follow-Up Studies MH - Global Health MH - Humans MH - Male MH - Sulfonamides/*administration & dosage/pharmacokinetics MH - Survival Rate/trends MH - Time Factors MH - Treatment Outcome OTO - NOTNLM OT - Bosentan OT - Pediatric OT - Pulmonary arterial hypertension OT - Safety EDAT- 2015/09/21 06:00 MHDA- 2016/09/16 06:00 CRDT- 2015/09/21 06:00 PHST- 2015/02/19 00:00 [received] PHST- 2015/06/15 00:00 [revised] PHST- 2015/08/06 00:00 [accepted] PHST- 2015/09/21 06:00 [entrez] PHST- 2015/09/21 06:00 [pubmed] PHST- 2016/09/16 06:00 [medline] AID - S0167-5273(15)30309-0 [pii] AID - 10.1016/j.ijcard.2015.08.080 [doi] PST - ppublish SO - Int J Cardiol. 2016 Jan 1;202:52-8. doi: 10.1016/j.ijcard.2015.08.080. Epub 2015 Aug 9.