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Moderna Announces Positive Initial Booster Data Against SARS-CoV-2 Variants of Concern

Nachrichtenquelle: Business Wire (engl.)
05.05.2021, 22:01  |  109   |   |   

Moderna, Inc. (Nasdaq: MRNA), a biotechnology company pioneering messenger RNA (mRNA) therapeutics and vaccines, today announced initial data from its Phase 2 study showing that a single 50 µg dose of mRNA-1273 or mRNA-1273.351 given as a booster to previously vaccinated individuals increased neutralizing antibody titer responses against SARS-CoV-2 and two variants of concern, B.1.351 (first identified in South Africa) and P.1 (first identified in Brazil). A booster dose of mRNA-1273.351, the Company’s strain-matched booster, achieved higher neutralizing antibody titers against the B.1.351 variant of concern than a booster dose of mRNA-1273. A manuscript describing these preliminary results has been submitted as a preprint to bioRxiv and will be submitted for peer-reviewed publication upon completion of the multivalent mRNA-1273.211 booster arm.

“As we seek to defeat the ongoing pandemic, we remain committed to being proactive as the virus evolves. We are encouraged by these new data, which reinforce our confidence that our booster strategy should be protective against these newly detected variants. The strong and rapid boost in titers to levels above primary vaccination also clearly demonstrates the ability of mRNA-1273 to induce immune memory,” said Stéphane Bancel, Chief Executive Officer of Moderna. “Our mRNA platform allows for rapid design of vaccine candidates that incorporate key virus mutations, potentially allowing for faster development of future alternative variant-matched vaccines should they be needed. We look forward to sharing data on our multivalent booster candidate, mRNA-1273.211, which combines mRNA-1273 and mRNA-1273.351 in a single vaccine, when available. We will continue to make as many updates to our COVID-19 vaccine as necessary to control the pandemic.”

The initial data is from an ongoing Phase 2 study in which three strategies for boosting neutralizing titers in previously vaccinated participants are being evaluated: mRNA-1273.351, a booster candidate based on the B.1.351 variant first identified in the Republic of South Africa, mRNA-1273.211, a multivalent booster candidate which combines a 50-50 mix of mRNA-1273, Moderna’s authorized vaccine against ancestral strains, and mRNA-1273.351 in a single vaccine, and a 50 µg booster dose of mRNA-1273. Today’s update includes preliminary data two weeks following administration of a booster dose of mRNA-1273 or mRNA-1273.351. Evaluation of additional samples collected at later timepoints after the booster, the Company’s multivalent vaccine candidate, mRNA-1273.211, and a lower dose of mRNA-1273.351 are ongoing and data is expected shortly.

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Moderna Announces Positive Initial Booster Data Against SARS-CoV-2 Variants of Concern Moderna, Inc. (Nasdaq: MRNA), a biotechnology company pioneering messenger RNA (mRNA) therapeutics and vaccines, today announced initial data from its Phase 2 study showing that a single 50 µg dose of mRNA-1273 or mRNA-1273.351 given as a booster to …

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