PMID- 30422390 OWN - NLM STAT- MEDLINE DCOM- 20200713 LR - 20200713 IS - 2160-7648 (Electronic) IS - 2160-763X (Linking) VI - 8 IP - 5 DP - 2019 Jul TI - A Randomized, Placebo-Controlled, Multiple-Ascending-Dose Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of the Soluble Guanylate Cyclase Stimulator Praliciguat in Healthy Subjects. PG - 564-575 LID - 10.1002/cpdd.627 [doi] AB - Nitric oxide (NO)-soluble guanylate cyclase (sGC)-cyclic guanosine monophosphate (cGMP) signaling is central to the regulation of several physiological processes, including blood flow and inflammation. Deficient NO signaling is implicated in multiple diseases. sGC stimulators are small molecules that enhance sGC activity, particularly in combination with NO. In a randomized, placebo-controlled phase 1 study, the safety, tolerability, pharmacokinetics, and pharmacodynamics of multiple ascending doses of the sGC stimulator praliciguat were assessed in 44 healthy adults. Four cohorts of 11 subjects (8 praliciguat, 3 placebo) received once-daily praliciguat for 14 days before up-titrating for 7 days (treatment sequences: 15/30 mg, 20/40 mg, 30/40 mg, and weight-based). All doses were tolerated. No serious or severe adverse events (AEs) were reported. The most common AEs in praliciguat recipients were headache and symptoms consistent with blood pressure (BP) lowering/vasodilation. There were no laboratory, vital sign, electrocardiographic, or platelet function findings indicative of a safety concern. Pharmacokinetics were dose proportional, with an effective half-life of 24-37 hours, supporting once-daily dosing. Praliciguat produced dose-related increases in plasma cGMP consistent with stimulation of sGC. Repeated once-daily dosing showed sustained decreases in BP. Results support evaluation of praliciguat for the treatment of conditions associated with deficient NO signaling. CI - (c) 2018 The Authors. Clinical Pharmacology in Drug Development Published by Wiley Periodicals, Inc. on behalf of The American College of Clinical Pharmacology. FAU - Hanrahan, John P AU - Hanrahan JP AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Wakefield, James D AU - Wakefield JD AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Wilson, Phebe J AU - Wilson PJ AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Mihova, Marina AU - Mihova M AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Chickering, Jennifer G AU - Chickering JG AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Ruff, Dennis AU - Ruff D AD - ICON Early Phase Services LLC, San Antonio, TX, USA. FAU - Hall, Michael AU - Hall M AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Milne, G Todd AU - Milne GT AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Currie, Mark G AU - Currie MG AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. FAU - Profy, Albert T AU - Profy AT AD - Ironwood Pharmaceuticals Inc., Cambridge, MA, USA. LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20181113 PL - United States TA - Clin Pharmacol Drug Dev JT - Clinical pharmacology in drug development JID - 101572899 RN - 0 (Pyrazoles) RN - 0 (Pyrimidines) RN - EC 4.6.1.2 (Soluble Guanylyl Cyclase) RN - H2D2X058MU (Cyclic GMP) RN - R1S0H458SA (praliciguat) SB - IM MH - Adult MH - Cross-Over Studies MH - Cyclic GMP/blood MH - Double-Blind Method MH - Female MH - Healthy Volunteers MH - Humans MH - Male MH - Middle Aged MH - *Pyrazoles/adverse effects/blood/pharmacokinetics/pharmacology MH - *Pyrimidines/adverse effects/blood/pharmacokinetics/pharmacology MH - *Soluble Guanylyl Cyclase MH - Young Adult OTO - NOTNLM OT - IW-1973 OT - cGMP OT - large volume of distribution OT - nitric oxide OT - phase 1b OT - praliciguat OT - soluble guanylate cyclase EDAT- 2018/11/14 06:00 MHDA- 2020/07/14 06:00 CRDT- 2018/11/14 06:00 PHST- 2018/05/04 00:00 [received] PHST- 2018/10/08 00:00 [accepted] PHST- 2018/11/14 06:00 [pubmed] PHST- 2020/07/14 06:00 [medline] PHST- 2018/11/14 06:00 [entrez] AID - 10.1002/cpdd.627 [doi] PST - ppublish SO - Clin Pharmacol Drug Dev. 2019 Jul;8(5):564-575. doi: 10.1002/cpdd.627. Epub 2018 Nov 13.