Phase 3 Results of Bavarian Nordic’s Smallpox Vaccine Published in The New England Journal of Medicine |
Thursday, 14. November 2019 08:23 |
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COPENHAGEN, Denmark, November 14, 2019 – Bavarian Nordic A/S (OMX: BAVA, OTC: BVNRY) announced today that results from the pivotal Phase 3 efficacy trial of its smallpox vaccine, MVA-BN®, have been peer-reviewed and published in The New England Journal of Medicine (NEJM), one of the world’s leading medical journals. The Phase 3 trial was the final clinical study to support the registration of the vaccine, which was approved in September by the U.S. Food and Drug Administration. The vaccine, marketed as JYNNEOS™, is indicated for prevention of smallpox and monkeypox disease in adults 18 years of age and older. “We are very proud that our research has been acknowledged by The New England Journal of Medicine. The fact that the study results have been published by such an esteemed journal underpins the importance of the data to the medical community,” said Paul Chaplin, President and CEO of Bavarian Nordic. The study, which compared indicators of efficacy for Bavarian Nordic’s non-replicating smallpox vaccine, MVA-BN to ACAM2000®, the U.S. licensed, replicating smallpox vaccine, successfully achieved both co-primary endpoints, while also demonstrating an improved safety profile versus ACAM2000. The results demonstrated that peak neutralizing antibodies induced by MVA-BN were statistically higher (almost 2-fold higher on average) than those stimulated by ACAM2000 and that primary vaccination with MVA-BN resulted in a highly attenuated take (reduction in lesion size), and in fact prevented the vaccine take in the majority of subjects re-vaccinated with ACAM2000. Importantly, a single dose of MVA-BN induced neutralizing antibody titers comparable with ACAM2000 at Day 14, indicating the potential for use of the vaccine to protect the general population. The paper titled “Phase 3 Efficacy Trial of Modified Vaccinia Ankara as a Vaccine against Smallpox” was co-authored by Phillip R Pittman, MD, MPH, United States Army Medical Research Institute of Infectious Diseases (USAMRIID) who also led the Phase 3 trial in collaboration with the U.S. Defense Health Agency (DHA). The paper is available at: https://www.nejm.org/doi/full/10.1056/NEJMoa1817307. Federal funding acknowledgments About USAMRIID About JYNNEOS™ JYNNEOS is a suspension for subcutaneous injection (0.5 mL) based on a live, attenuated vaccinia virus (Modified Vaccinia Ankara, MVA-BN), incapable of replicating in the body, yet still capable of eliciting a potent immune response. Typical severe adverse reactions known for replicating vaccinia virus strains, such as myocarditis, encephalitis, generalized vaccinia or eczema vaccinatum, were not observed during the clinical development program of JYNNEOS. The approval of JYNNEOS for smallpox is based on a comprehensive development program, comprising a total of 7871 individuals aged 18 through 80 years who received at least 1 dose (7109 smallpox vaccine-naïve and 762 smallpox vaccine-experienced individuals) in 22 clinical trials, including two Phase 3 studies, the latter of which showed non-inferiority in terms of immunogenicity measured by plaque reduction neutralization test of JYNNEOS compared to ACAM2000, the U.S. licensed, replicating smallpox vaccine. The approval for monkeypox is based on survival data obtained in lethal monkeypox virus challenge studies in non-human primates. Overall survival in various models ranged from 80% to 100% of JYNNEOS-vaccinated animals compared to 0-40% in control animals. The safety of JYNNEOS was evaluated in smallpox vaccine-naïve healthy adults, in healthy adults previously vaccinated with a smallpox vaccine, in HIV-infected adults, and in adults with atopic dermatitis. The most common (>10%) adverse reactions associated with JYNNEOS were injection site reactions (pain, redness, swelling, induration, itching) and systemic adverse reactions such as muscle pain, headache, fatigue, nausea, myalgia and chills. Serious adverse reactions were reported in 0.05% of subjects who received JYNNEOS and included Crohn’s disease, sarcoidosis, extraocular muscle paresis and throat tightness. Cardiac adverse reactions of special interest were reported in 0.08% of subjects who received JYNNEOS and included tachycardia, electrocardiogram T wave inversion, electrocardiogram abnormal, electrocardiogram ST segment elevation, electrocardiogram T wave abnormal, and palpitations. For full Prescribing Information, visit http://www.jynneos.com. About Bavarian Nordic Contacts Graham Morrell Press Release Attachment |
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