PMID- 34606332 OWN - NLM STAT- MEDLINE DCOM- 20211203 LR - 20220518 IS - 1098-6596 (Electronic) IS - 0066-4804 (Print) IS - 0066-4804 (Linking) VI - 65 IP - 12 DP - 2021 Nov 17 TI - Thorough QT Study To Evaluate the Effect of Zoliflodacin, a Novel Therapeutic for Gonorrhea, on Cardiac Repolarization in Healthy Adults. PG - e0129221 LID - 10.1128/AAC.01292-21 [doi] LID - e01292-21 AB - Zoliflodacin is a novel spiropyrimidinetrione antibiotic being developed as single oral dose treatment to address the growing global threat of Neisseria gonorrhoeae. To evaluate the cardiac safety of zoliflodacin, a thorough QT/QTc (TQT) study was performed in healthy subjects. In this randomized, double-blind, placebo-controlled, 4-period crossover study, 72 subjects in a fasted state received a single dose of zoliflodacin at 2 g (therapeutic), zoliflodacin at 4 g (supratherapeutic), placebo, and moxifloxacin at 400 mg as a positive comparator. Cardiac repolarization was measured by duration of the corrected QT interval by Fridericia's formula (QTcF). At each time point up to 24 h after zoliflodacin administration, the upper limit of the one-sided 95% confidence interval (CI) for the placebo-corrected change from the predose baseline in QTcF (DeltaDeltaQTcF) was less than 10 ms, indicating an absence of a clinically meaningful increase in QT prolongation. The lower limit of the one-sided multiplicity-adjusted 95% CI of DeltaDeltaQTcF for moxifloxacin was longer than 5 ms at four time points from 1 to 4 h after dosing, demonstrating adequate sensitivity of the QTc measurement. There were no clinically significant effects on heart rate, PR and QRS intervals, electrocardiogram (ECG) morphology, or laboratory values. Treatment-emergent adverse events (AEs) were mild or moderate in severity and transient. This was a negative TQT study according to regulatory guidelines (E14) and confirms that a single oral dose of zoliflodacin is safe and well tolerated. These findings suggest that zoliflodacin is not proarrhythmic and contribute to the favorable assessment of cardiac safety for a single oral dose of zoliflodacin. (This study has been registered at ClinicalTrials.gov under registration no. NCT03613649.). FAU - Newman, Lori M AU - Newman LM AUID- ORCID: 0000-0001-5464-5208 AD - National Institute of Allergy and Infectious Diseasesgrid.419681.3, Rockville, Maryland, USA. FAU - Kankam, Martin AU - Kankam M AD - Altasciences Clinical Kansas, Inc., Overland Park, Kansas, USA. FAU - Nakamura, Aya AU - Nakamura A AD - Emmes Company, LLC, Rockville, Maryland, USA. FAU - Conrad, Tom AU - Conrad T AD - Emmes Company, LLC, Rockville, Maryland, USA. FAU - Mueller, John AU - Mueller J AD - Entasis Therapeutics, Waltham, Massachusetts, USA. FAU - O'Donnell, John AU - O'Donnell J AD - Entasis Therapeutics, Waltham, Massachusetts, USA. FAU - Osborn, Blaire L AU - Osborn BL AD - National Institute of Allergy and Infectious Diseasesgrid.419681.3, Rockville, Maryland, USA. FAU - Gu, Kenan AU - Gu K AD - National Institute of Allergy and Infectious Diseasesgrid.419681.3, Rockville, Maryland, USA. FAU - Saviolakis, George A AU - Saviolakis GA AD - DynPort Vaccine Company, Frederick, Maryland, USA. LA - eng SI - ClinicalTrials.gov/NCT03613649 GR - HHSN272201500005C/AI/NIAID NIH HHS/United States GR - HHSN272201500005I/HHS | National Institutes of Health (NIH)/ PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Extramural DEP - 20211004 PL - United States TA - Antimicrob Agents Chemother JT - Antimicrobial agents and chemotherapy JID - 0315061 RN - 0 (Barbiturates) RN - 0 (Fluoroquinolones) RN - 0 (Isoxazoles) RN - 0 (Morpholines) RN - 0 (Oxazolidinones) RN - 0 (Spiro Compounds) RN - FWL2263R77 (zoliflodacin) SB - IM MH - Adult MH - Barbiturates MH - Cross-Over Studies MH - Dose-Response Relationship, Drug MH - Double-Blind Method MH - Electrocardiography MH - Fluoroquinolones MH - *Gonorrhea MH - Healthy Volunteers MH - Heart Rate MH - Humans MH - Isoxazoles MH - *Long QT Syndrome MH - Morpholines MH - Oxazolidinones MH - Spiro Compounds PMC - PMC8597722 OTO - NOTNLM OT - Neisseria gonorrhoeae OT - cardiac safety OT - gonorrhea OT - thorough QT study OT - zoliflodacin EDAT- 2021/10/05 06:00 MHDA- 2021/12/15 06:00 PMCR- 2022/05/17 CRDT- 2021/10/04 17:17 PHST- 2021/10/05 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/10/04 17:17 [entrez] PHST- 2022/05/17 00:00 [pmc-release] AID - 01292-21 [pii] AID - aac.01292-21 [pii] AID - 10.1128/AAC.01292-21 [doi] PST - ppublish SO - Antimicrob Agents Chemother. 2021 Nov 17;65(12):e0129221. doi: 10.1128/AAC.01292-21. Epub 2021 Oct 4.