Omadacycline for treatment of acute bacterial infections: a meta-analysis of phase II/III trials

Abstract

Objective This study aims to assess the clinical efficacy and safety of omadacycline for the treatment of acute bacterial infections. Methods A search of PubMed, Embase, Cochrane Library, and Clinical Trials was conducted up to July 1, 2022. We included only randomized controlled trials (RCTs), in which omadacycline and other antibiotics were evaluated for treating acute bacterial infections in adults. The primary outcomes were clinical response and microbiological response, whereas the secondary outcome was the risk of adverse events (AEs). Results A total of seven RCTs involving 2841 patients with acute bacterial infection were included. Overall, our study illustrated that the clinical cure ratio of omadacycline was similar to the comparators in the treatment of acute bacterial infections (OR = 1.18, 95%CI = 0.96, 1.46, I2 = 29%). Omadacycline had a microbiological eradication rate similar to comparators in the treatment of acute bacterial infections (OR = 1.02, 95%CI = 0.81, 1.29, I2 = 42%). No statistical differences were observed between omadacycline and the comparators in terms of infection caused by Staphylococcus aureus (OR = 1.14, 95%CI = 0.80, 1.63, I2 = 0%), methicillin-resistant S. aureus (MRSA, OR = 1.28, 95%CI = 0.73, 2.24, I2 = 0%), methicillin-susceptible S. aureus (MSSA, OR = 1.12, 95%CI = 0.69, 1.81, I2 = 0%), and Enterococcus faecalis (OR = 2.47, 95%CI = 0.36, 16.97, I2 = 7%). A significant difference was found between omadacycline and the comparators for the risk of any AEs and treatment related AEs. The risk of discontinuation of the study drug due to an AEs was lower for omadacycline than for the comparators. Conclusion Omadacycline is as good as comparators in terms of efficacy and tolerance in the treatment of acute bacterial infections in adult patients. Thus, omadacycline is an appropriate option for antibiotic therapy in adult patients with acute bacterial infections.

Efficacy of omadacycline in the treatment of Legionella pneumonia: a case report

“…Among the new generation tetracyclines, omadacycline has the highest concentration in lung tissue, and the concentration of omadacycline in alveolar macrophages (AM) and alveolar epithelial cell lining fluid (ELF) is higher than that of eravacycline and tigecycline, which makes it suitable for the treatment of lung infections ( Gotfried et al., 2017 ). Common adverse reactions to omadacycline include gastrointestinal symptoms and elevated transaminases ( Lin et al., 2023 ). In this case, the patient did not experience any of these adverse reactions during treatment under our care and observation.…”