PMID- 25912697 OWN - NLM STAT- MEDLINE DCOM- 20160301 LR - 20221207 IS - 1347-4820 (Electronic) IS - 1346-9843 (Linking) VI - 79 IP - 6 DP - 2015 TI - Multicenter, Randomized, Double-Blinded, Placebo-Controlled Phase II Study of Serelaxin in Japanese Patients With Acute Heart Failure. PG - 1237-47 LID - 10.1253/circj.CJ-15-0227 [doi] AB - BACKGROUND: Serelaxin, a recombinant form of human relaxin-2, is in development for treating acute heart failure (AHF) and a Phase II study in Japanese AHF patients was conducted. METHODS AND RESULTS: A randomized, double-blind, placebo-controlled study of serelaxin at 10 and 30 microg.kg(-1).day(-1)continuous intravenous infusion for up to 48 h, added to standard care for Japanese AHF patients. Primary endpoints were adverse events (AEs) through Day 5, serious AEs (SAEs) through Day 14, and serelaxin pharmacokinetics. Secondary endpoints included changes in systolic blood pressure (SBP) and cardiorenal biomarkers. A total of 46 patients received the study drug and were followed for 60 days. The observed AE profile was comparable between the groups, with no AEs of concern. Dose-dependent increase in the serum concentration of serelaxin was observed across the 2 dose rates of serelaxin. A greater reduction in SBP was observed with serelaxin 30 microg.kg(-1).day(-1)vs. placebo (-7.7 [-16.4, 1.0] mmHg). A greater reduction in NT-proBNP was noted with serelaxin (-50.8% and -54.9% for 10 and 30 microg.kg(-1).day(-1), respectively at Day 2). CONCLUSIONS: Serelaxin was well tolerated in this study with Japanese AHF patients, with no AEs of concern and favorable beneficial trends on efficacy. These findings support further evaluation of serelaxin 30 microg.kg(-1).day(-1)in this patient population. FAU - Sato, Naoki AU - Sato N AD - Cardiology and Intensive Care Unit, Nippon Medical School Musashi-Kosugi Hospital. FAU - Takahashi, Wataru AU - Takahashi W FAU - Hirayama, Atsushi AU - Hirayama A FAU - Ajioka, Masayoshi AU - Ajioka M FAU - Takahashi, Naoto AU - Takahashi N FAU - Okishige, Kaoru AU - Okishige K FAU - Wang, XingLi AU - Wang X FAU - Maki, Akio AU - Maki A FAU - Maruyama, Hideki AU - Maruyama H FAU - Ebinger, Ursula AU - Ebinger U FAU - Yamaguchi, Masayuki AU - Yamaguchi M FAU - Pang, Yinuo AU - Pang Y FAU - Matsumoto, Hiroki AU - Matsumoto H FAU - Kawana, Masatoshi AU - Kawana M LA - eng PT - Clinical Trial, Phase II PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20150424 PL - Japan TA - Circ J JT - Circulation journal : official journal of the Japanese Circulation Society JID - 101137683 RN - 0 (Biomarkers) RN - 0 (Cardiovascular Agents) RN - 0 (Peptide Fragments) RN - 0 (Recombinant Proteins) RN - 0 (pro-brain natriuretic peptide (1-76)) RN - 0 (serelaxin protein, human) RN - 114471-18-0 (Natriuretic Peptide, Brain) RN - 9002-69-1 (Relaxin) SB - IM MH - Acute Disease MH - Aged MH - Aged, 80 and over MH - *Asian People MH - Biomarkers MH - Blood Pressure/drug effects MH - Cardiovascular Agents/therapeutic use MH - Comorbidity MH - Double-Blind Method MH - Drug Therapy, Combination MH - Dyspnea/etiology/prevention & control MH - Female MH - Heart Failure/complications/*drug therapy MH - Humans MH - Infusions, Intravenous MH - Japan MH - Male MH - Metabolic Clearance Rate MH - Middle Aged MH - Natriuretic Peptide, Brain/blood MH - Peptide Fragments/blood MH - Recombinant Proteins/adverse effects/blood/pharmacokinetics/therapeutic use MH - Relaxin/adverse effects/blood/pharmacokinetics/*therapeutic use MH - Treatment Outcome EDAT- 2015/04/29 06:00 MHDA- 2016/03/02 06:00 CRDT- 2015/04/28 06:00 PHST- 2015/04/28 06:00 [entrez] PHST- 2015/04/29 06:00 [pubmed] PHST- 2016/03/02 06:00 [medline] AID - 10.1253/circj.CJ-15-0227 [doi] PST - ppublish SO - Circ J. 2015;79(6):1237-47. doi: 10.1253/circj.CJ-15-0227. Epub 2015 Apr 24.