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Valneva Announces Publication of Lyme Disease Phase 2 Trials in the Lancet Infectious Diseases


Saint-Herblain (France), June 3, 2024 Valneva SE (Nasdaq: VALN; Euronext Paris: VLA), a specialty vaccine company, today announced that the results of two Phase 2 clinical trials of Lyme disease vaccine candidate, VLA15, were published in the peer-reviewed medical journal, The Lancet Infectious Diseases. These trials, as well as a third Phase 2 trial in pediatric participants, supported the design of the current pivotal Phase 3 trial, ‘Vaccine Against Lyme for Outdoor Recreationists’ (VALOR).

Juan Carlos Jaramillo M.D., Chief Medical Officer of Valneva, said, “We are pleased that these results are now fully available to the broader infectious disease community. Lyme disease is the most prevalent vector-borne infectious disease in North America and Europe, and we are excited about the ongoing trials and progress towards potentially offering a vaccine against this unmet medical need.”

The article, titled “Optimization of Dose Level and Vaccination Schedule for the VLA15 Lyme Borreliosis Vaccine Candidate Among Healthy Adults: Two Randomized, Phase 2 Studies” provides a detailed analysis of the VLA15-201 and VLA15-202 trial results, which investigated different dose levels and vaccination schedules of VLA15, a hexavalent Lyme disease vaccine candidate targeting most prevalent Borrelia species (serotype 1-6) in North America and Europe.

VLA15 was shown to be immunogenic across all dose groups and vaccination schedules tested. Strongest antibody responses across all six serotypes were exhibited at the highest dose (180 µg) and broader vaccination intervals (Month 0,2,6). VLA15 has shown a favorable safety and tolerability profile across all trials to date. No safety concerns were observed by an independent Data Safety Monitoring Board (DSMB)1,2, in any treatment group.

Valneva and Pfizer entered into a collaboration agreement in April 2020 to co-develop VLA15, with updates to the terms within this agreement made in June 20223. The companies previously reported positive results for the booster phase of trial VLA15-2024 and a third Phase 2 trial, VLA15-2215, providing further evidence on VLA15’s safety profile and its potential to provide immunity against Lyme disease in adult, pediatric and adolescent populations. The companies also aim to publish these results in a peer-reviewed medical journal.

The Phase 3 clinical trial, VALOR, is currently ongoing to investigate the efficacy, safety and immunogenicity of VLA15 in participants five years of age and older in highly endemic regions in the United States, Canada and Europe. Enrollment of 9,437 participants for the trial was completed in December 2023.

Subject to positive data, Pfizer aims to submit a Biologic License Application to the Food and Drug Administration and Marketing Authorization Application to the European Medicines Agency in 2026.nown and unknown risks and uncertainties and other factors that may cause actual results, performance or achievements to be materially different from any future results, performance or achievement expressed or implied by these forward-looking statements. In particular, the expectations of Valneva could be affected by, among other things, uncertainties and delays involved in the development and manufacture of vaccines, unexpected clinical trial results, unexpected regulatory actions or delays, competition in general, currency fluctuations, the impact of the global and European credit crisis, and the ability to obtain or maintain patent or other proprietary intellectual property protection. Success in preclinical studies or earlier clinical trials may not be indicative of results in future clinical trials. In light of these risks and uncertainties, there can be no assurance that the forward-looking statements made during this presentation will in fact be realized. Valneva is providing the information in these materials as of this press release and disclaim any intention or obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.

1 Valneva and Pfizer Report Positive Phase 2 Pediatric Data for Lyme Disease Vaccine Candidate – Valneva
2 Valneva and Pfizer Report Six-Month Antibody Persistence Data in Children and Adults for Lyme Disease Vaccine Candidate – Valneva
3 Valneva and Pfizer Enter into an Equity Subscription Agreement and Update Terms of Collaboration Agreement for Lyme Disease Vaccine Candidate VLA15 – Valneva
4 Valneva and Pfizer Report Further Positive Phase 2 Results, Including Booster Response, for Lyme Disease Vaccine Candidate – Valneva
5 Valneva and Pfizer Report Positive Pediatric and Adolescent Phase 2 Booster Results for Lyme Disease Vaccine Candidate – Valneva
6 Stanek, et al. Lyme Borreliosis. 2012. The Lancet 379:461–473.
7 Burn L, et al. Incidence of Lyme Borreliosis in Europe from National Surveillance Systems (2005–2020). 2023. Vector Borne and Zoonotic Diseases. 23(4):156–171.
8 Kugeler KJ, et al. Estimating the frequency of Lyme disease diagnoses—United States, 2010-2018. 2021. Emergency Infectious Disease. 27(2).
9 Centers for Disease Control and Prevention. Lyme disease. Signs and Symptoms. Available from: Accessed September 2022.
10 Steere AC, Strle F, Wormser GP, et al. Lyme borreliosis. Nature Reviews Disease Primers. 2016;2:16090.
11 Centers for Disease Control and Prevention. Understanding Lyme and Other Tickborne Diseases. May 2022. Available from: Accessed April 2024.


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