Moderna Highlights Publication of Antibody Persistence Data of its COVID-19 Vaccine out to 6 Months in the New England Journal of Medicine
Moderna, Inc. (Nasdaq: MRNA), a biotechnology company pioneering messenger RNA (mRNA) therapeutics and vaccines, today highlighted the publication of antibody persistence data out to 6 months following the second dose of the Moderna COVID-19 Vaccine in The New England Journal of Medicine.
“We are pleased that this new data shows antibody persistence through 6 months following the second dose of our COVID-19 vaccine,” said Stéphane Bancel, Chief Executive Officer of Moderna. “This gives us further confidence in the protection afforded by our COVID-19 vaccine. We remain committed to continuing to address the COVID-19 pandemic.”
This study analyzed 33 healthy adult participants in the NIH-led Phase 1 study of Moderna’s COVID-19 Vaccine at 6 months following the second 100 μg dose (day 209). As detected by three distinct serologic assays, antibodies elicited by the Moderna COVID-19 vaccine persisted through 6 months after the second dose. Antibody decay was estimated using two approaches and was consistent with published observations of convalescent patients with COVID-19 through 8 months after symptom onset.
Studies monitoring immune responses beyond 6 months are ongoing. Out of an abundance of caution, Moderna is also pursuing a clinical development strategy against emerging variants. Additionally, NIAID, part of the National Institutes of Health (NIH), will conduct a Phase 1 clinical trial to assess the monovalent and multivalent modified mRNA-1273 vaccines as a primary series in naïve individuals and as a booster vaccine in those previously vaccine with mRNA-1273.
About the Moderna COVID-19 Vaccine
The Moderna COVID-19 Vaccine is an mRNA vaccine against COVID-19 encoding for a prefusion stabilized form of the Spike (S) protein, which was co-developed by Moderna and investigators from the National Institute of Allergy and Infectious Diseases’ (NIAID) Vaccine Research Center. The first clinical batch, which was funded by the Coalition for Epidemic Preparedness Innovations, was completed on February 7, 2020 and underwent analytical testing; it was shipped to the National Institutes of Health (NIH) on February 24, 2020, 42 days from sequence selection. The first participant in the NIAID-led Phase 1 study of the Moderna COVID-19 Vaccine was dosed on March 16, 2020, 63 days from sequence selection to Phase 1 study dosing. On May 12, 2020, the U.S. FDA granted the Moderna COVID-19 Vaccine Fast Track designation. On May 29, 2020, the first participants in each age cohort were dosed in the Phase 2 study of the vaccine. On July 8, 2020, the Phase 2 study completed enrollment.
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