Moderna Announces mRNA-1345 Phase 3 Results

Moderna, Inc. (NASDAQ: MRNA) has announced positive data from its ConquerRSV Phase 3 trial of mRNA-1345, an investigational mRNA vaccine that targets respiratory syncytial virus in older adults. Following review by an independent Data and Safety Monitoring Board (DSMB), the primary efficacy endpoints have been met, including vaccine efficacy (VE) of 83.7% (95.88% CI: 66.1%, 92.2%; p<0.0001) against RSV-associated lower respiratory tract disease (RSV-LRTD) as defined by two or more symptoms. Based on these results, Moderna intends to submit for regulatory approval in the first half of 2023.

“Today’s results represent an important step forward in preventing lower respiratory disease due to RSV in adults 60 years of age and older. These data are encouraging, and represent the second demonstration of positive phase 3 trial results from our mRNA infectious disease vaccine platform after, Spikevax, our COVID-19 vaccine. We look forward to publishing the full data set and sharing the results at an upcoming infectious disease medical conference,” said Stéphane Bancel, Moderna’s Chief Executive Officer. “Respiratory diseases are a major public health priority given they have a significant health impact and are a leading cause of hospitalization. For these reasons, in addition to our mRNA-1345 RSV vaccine candidate, we are committed to developing a portfolio of respiratory mRNA vaccines to target the most significant viruses causing respiratory disease, including COVID-19, influenza, and human metapneumovirus.”

“RSV significantly affects the health of older and high-risk adults, particularly those with comorbidities,” said Abdullah Baqui, a principal investigator for the study sites in Bangladesh and Professor, Department of International Health, Director, International Center for Maternal and Newborn Health, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University. “This trial will help to understand the role of severe acute respiratory infections in older adult populations and inform the future implementation of vaccines in adults in lower-resource areas.”

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