Nabriva Publishes Data Demonstrating the Potent Anti-Inflammatory Properties of XENLETA® (lefamulin)
The nonclinical study, entitled “Anti-inflammatory activity of lefamulin versus azithromycin and dexamethasone in vivo and in vitro in a lipopolysaccharide-induced lung neutrophilia mouse model,” was published in the peer-reviewed journal, PLOS ONE.
XENLETA is the first intravenous and oral pleuromutilin approved for the systemic treatment of community acquired bacterial pneumonia (CABP) in adults. In this nonclinical study of inflammatory lung disease, XENLETA potently inhibited inflammation caused by the migration of neutrophils (a type of white blood cell) in the lungs of mice. Importantly, XENLETA also reduced pro-inflammatory cytokines comparable to that observed with dexamethasone (a potent corticosteroid) and greater than that of azithromycin, a macrolide antibiotic commonly utilized for its anti-inflammatory properties.
“Infection in the lung is associated with an acute inflammatory reaction that can complicate a patient’s clinical course and make treatment more difficult,” said
“These findings are important as they suggest lefamulin has anti-inflammatory properties, along with its proven anti-infective activity,” said Dr.
In this study, the anti-inflammatory effects of XENLETA were evaluated in a mouse model of lung inflammation induced by a toxin called lipopolysaccharide that simulates acute respiratory distress syndrome (ARDS) similar to that seen with SARS-CoV-2 infection. Single subcutaneous doses of lefamulin (10‒140mg/kg) resulted in reductions of several measurements of inflammation: dose-dependent reductions of bronchoalveolar lavage fluid neutrophil cell counts, pro-inflammatory cytokine (TNF-α, IL-6, IL-29 1β, and GM-CSF), chemokine (CXCL-1, CXCL-2, and CCL-2), and MMP-9 levels that were comparable to or more potent than single oral/intraperitoneal dexamethasone (0.5/1mg/kg) or subcutaneous azithromycin (10‒100mg/kg).
XENLETA® (lefamulin) is a first-in-class semi-synthetic pleuromutilin antibiotic for systemic administration in humans discovered and developed by the
Indication and Important Safety Information
XENLETA is a pleuromutilin antibacterial indicated for the treatment of adults with community-acquired bacterial pneumonia (CABP) caused by the following susceptible microorganisms: Streptococcus pneumoniae, Staphylococcus aureus (methicillin-susceptible isolates), Haemophilus influenzae, Legionella pneumophila, Mycoplasma pneumoniae, and Chlamydophila pneumoniae.
To reduce the development of drug-resistant bacteria and maintain the effectiveness of XENLETA and other antibacterial drugs, XENLETA should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria.
Important Safety Information
XENLETA is contraindicated in patients with known hypersensitivity to XENLETA or pleuromutilins.
XENLETA tablets are contraindicated for use with CYP3A4 substrates that prolong the QT interval.
WARNINGS AND PRECAUTIONS
XENLETA has the potential to prolong the QT interval. Avoid XENLETA in patients with known QT prolongation, ventricular arrhythmias, and patients receiving drugs that may prolong the QT interval.
Based on animal studies, XENLETA may cause fetal harm. Advise females of reproductive potential of the potential risk to the fetus and to use effective contraception.
Clostridioides difficile-associated diarrhea (CDAD) has been reported with nearly all systemic antibacterial agents, including XENLETA, with severity ranging from mild diarrhea to fatal colitis. Evaluate if diarrhea occurs.
The most common adverse reactions (≥2%) for (a) XENLETA Injection are administration site reactions, hepatic enzyme elevation, nausea, hypokalemia, insomnia, and headache and (b) XENLETA Tablets are diarrhea, nausea, vomiting, and hepatic enzyme elevation.
USE IN SPECIFIC POPULATIONS
In patients with severe hepatic impairment, reduce the dosage of XENLETA Injection to 150 mg infused over 60 minutes every 24 hours. XENLETA Tablets are not recommended in patients with moderate or severe hepatic impairment due to insufficient information to provide dosing recommendations.
Avoid XENLETA Injection and Tablets with concomitant strong or moderate CYP3A or P-gp inducers. Monitor for reduced efficacy of XENLETA.
Avoid XENLETA Tablets with strong CYP3A or P-gp inhibitors.
Monitor for adverse reactions of sensitive CYP3A substrates administered with XENLETA Tablets.
XENLETA has not been studied in pregnant women. Verify pregnancy status in females prior to initiating XENLETA and advise females to use contraception during treatment and for 2 days after the final dose. Lactating women should pump and discard milk for the duration of treatment with XENLETA and for 2 days after the final dose.
To report SUSPECTED ADVERSE REACTIONS, or administration during pregnancy, contact
Please see Full Prescribing Information for XENLETA.
About Nabriva Therapeutics plc
Any statements in this press release about future expectations, plans and prospects for Nabriva Therapeutics, including but not limited to statements about its ability to successfully commercialize XENLETA for the treatment of CABP, including the managed care coverage for XENLETA, the distribution and promotion of SIVEXTRO for the treatment of ABSSSI, the development of CONTEPO for Complicated Urinary Tract Infections (cUTI), the expansion of its commercial sales force, the clinical utility of XENLETA for CABP, SIVEXTRO for ABSSSI and of CONTEPO for cUTI, the impact on gross sales revenue from the recognition of SIVEXTRO sales in its results of operations, the impact of macro events on sales of SIVEXTRO and XENLETA, plans for and timing of the review of regulatory filings for XENLETA and CONTEPO, efforts to bring CONTEPO to market, the market opportunity for and the potential market acceptance of XENLETA for CABP, SIVEXTRO for ABSSSI and CONTEPO for cUTI, the development of XENLETA and CONTEPO for additional indications, the development of additional formulations of XENLETA and CONTEPO, plans for making lefamulin available in the European
Nabriva Therapeutics plc
Source: Nabriva Therapeutics US, Inc