PMID- 27046445 OWN - NLM STAT- MEDLINE DCOM- 20171124 LR - 20181113 IS - 1557-7732 (Electronic) IS - 1080-7683 (Print) IS - 1080-7683 (Linking) VI - 32 IP - 8 DP - 2016 Oct TI - A Randomized Phase 1 Dose Escalation Study to Evaluate Safety, Tolerability, and Pharmacokinetics of Trabodenoson in Healthy Adult Volunteers. PG - 548-554 AB - PURPOSE: To investigate the safety, tolerability, and pharmacokinetics of trabodenoson, a highly selective adenosine mimetic targeting the adenosine A(1) receptor. METHODS: In Part 1, 60 healthy adult volunteers were randomized to 14 days of twice-daily topical monocular application of placebo or trabodenoson (200, 400, 800, 1,600, 2,400, or 3,200 mug). In Part 2, 10 subjects were randomized to placebo or 8 escalating doses of bilateral trabodenoson (total daily doses: 1,800-6,400 mug). RESULTS: The incidence of treatment-related adverse events in Part 1 was similar in the trabodenoson (27.8%) and placebo (25.0%) groups. Most were mild in intensity. The most common adverse events (AEs) for trabodenoson and placebo were headache (25.0% vs. 33%, respectively) and eye pain (11.1% vs. 4.2%, respectively). Ocular AEs were infrequent (16.7% and 17.9%, respectively), were self-limited, lasted <24 h, and were typically mild in intensity. The most common ocular AE was eye pain (9.5% and 3.6%, respectively), with a single observation of ocular hyperemia (200 mug trabodenoson). Trabodenoson was rapidly absorbed [median time to maximum concentration (t(max)): approximately 0.08 to 0.27 h] and eliminated (t((1/2)): 0.48-2.0 h), with no evidence of drug accumulation. Systemic exposure to topical trabodenoson was dose related but not dose proportional, with a plateau effect at doses >/=2,400 mg per eye. No clinically significant treatment-related systemic AEs were observed, and increasing systemic exposure had no effect on heart rate or blood pressure. CONCLUSIONS: Ocular doses of trabodenoson up to 3,200 mug per eye were safe and well tolerated in the eye and resulted in no detectable systemic effects in healthy adult volunteers. FAU - Laties, Alan AU - Laties A AD - 1 Scheie Eye Institute , Philadelphia, Pennsylvania. FAU - Rich, Cadmus C AU - Rich CC AD - 2 Inotek Pharmaceuticals Corporation , Lexington, Massachusetts. FAU - Stoltz, Randall AU - Stoltz R AD - 3 Covance Global Clinical Pharmacology , Evansville, Indiana. FAU - Humbert, Vernon AU - Humbert V AD - 4 Evansville Heart Center , Evansville, Indiana. FAU - Brickman, Chaim AU - Brickman C AD - 2 Inotek Pharmaceuticals Corporation , Lexington, Massachusetts. FAU - McVicar, William AU - McVicar W AD - 2 Inotek Pharmaceuticals Corporation , Lexington, Massachusetts. FAU - Baumgartner, Rudolf A AU - Baumgartner RA AD - 2 Inotek Pharmaceuticals Corporation , Lexington, Massachusetts. LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial DEP - 20160405 PL - United States TA - J Ocul Pharmacol Ther JT - Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics JID - 9511091 SB - IM MH - Adult MH - Aged MH - Dose-Response Relationship, Drug MH - Double-Blind Method MH - Eye/physiopathology MH - *Healthy Volunteers MH - Humans MH - Middle Aged MH - Ocular Hypertension/chemically induced PMC - PMC5069726 OTO - NOTNLM OT - Trabodenoson OT - adenosine OT - intraocular pressure OT - ocular hypertension OT - primary open angle glaucoma OT - trabecular meshwork COIS- Author Disclosure Statement A.L. is a consultant and member of the Inotek Scientific Advisory Board. C.C.R., C.B., W.M., and R.A.B. are or were employees of Inotek Pharmaceuticals during the conduct of the work reported herein and own stock and stock options. R.S. and V.H have no competing financial interests. EDAT- 2016/10/19 06:00 MHDA- 2017/11/29 06:00 PMCR- 2016/10/01 CRDT- 2016/04/06 06:00 PHST- 2016/10/19 06:00 [pubmed] PHST- 2017/11/29 06:00 [medline] PHST- 2016/04/06 06:00 [entrez] PHST- 2016/10/01 00:00 [pmc-release] AID - 10.1089/jop.2015.0147 [pii] AID - 10.1089/jop.2015.0147 [doi] PST - ppublish SO - J Ocul Pharmacol Ther. 2016 Oct;32(8):548-554. doi: 10.1089/jop.2015.0147. Epub 2016 Apr 5.