Valneva to Present Lyme Disease and Chikungunya Vaccine Updates at R&D Investor Day in New York City on July 9th

Saint Herblain (France), June 11, 2019 – Valneva SE (“Valneva” or “the Company”), a biotech company developing and commercializing vaccines for infectious diseases with major unmet medical needs, today announced that it will host a Research & Development (R&D) Investor Day on Tuesday, July 9th, 2019 in New York City, from 8:30a.m. to 11:00a.m. Eastern Daylight Time (EDT).

Members of Valneva’s Management Board, including Thomas Lingelbach (Chief Executive Officer) and Wolfgang Bender (Chief Medical Officer), will give a full update on the Company’s two leading vaccine clinical development programs, VLA15 (Lyme disease) and VLA1553 (chikungunya).

Valneva’s vaccine candidate VLA15 is the only Lyme disease vaccine in clinical development worldwide, while the Company’s unique chikungunya vaccine candidate, VLA1553, has potential single-shot long-term efficacy.

R&D Investor Day Event Details

The event will be held on Tuesday, July 9th at the Parker Hotel in New York City. Doors will open at 7.45a.m. for registration and breakfast, and the event will end around 11:00a.m. The live event is open to institutional investors, financial analysts, and business development professionals only or by invitation from the Company. Registration for the event can be found at http://events.constantcontact.com/register/event?llr=mlhnstzab&oeidk=a07egdvisy78c47d7fd.

Webcast

A live webcast of the event will be available starting at 8.30am at http://lifesci.rampard.com/20190709. It will also be available, post-event, in the Investor section of the Company’s website atwww.valneva.com.

About Lyme Disease

Lyme disease is a systemic infection caused by Borrelia bacteria transmitted to humans by infected Ixodes ticks1. It is considered the most common vector borne illness in the Northern Hemisphere. According to the US Centers for Disease Control and Prevention (CDC),

approximately 300,000 Americans2 are diagnosed with Lyme disease each year with at least a further 200,000 cases in Europe3. Early symptoms of Lyme disease (such as a gradually expanding erythematous rash called Erythema migrans or more unspecific symptoms like fatigue, fever, headache, mild stiff neck, arthralgia or myalgia) are often overlooked or misinterpreted. Left untreated, the disease can disseminate and cause more serious complications affecting the joints (arthritis), the heart (carditis) or the nervous system. The medical need for vaccination against Lyme disease is steadily increasing as the disease footprint widens4.

About VLA15

Valneva’s vaccine candidate, VLA15, is currently the only active vaccine program in clinical development against Lyme disease. The program was granted Fast Track designation by the U.S. Food and Drug Administration (FDA) in July 20175 and Valneva reported positive interim Phase 1 results in March 20186. VLA15 showed a favourable safety profile and was immunogenic in all doses and formulations tested with good OspA-specific IgG antibody responses against all OspA serotypes.

VLA15 is a multivalent, protein subunit vaccine that targets the outer surface protein A (OspA) of Borrelia. It is designed for prophylactic, active immunization against Lyme disease aiming for protection against the majority of human pathogenic Borrelia species. VLA15 is designed to confer protection by raising antibodies that prevent Borrelia from migrating from ticks to humans after a bite. The safety profile is expected to be similar to other vaccines using the same technology that have been approved for active immunization in adults and children.

The target population includes individuals at risk above 2 years of age living in endemic areas, people planning to travel to endemic areas to pursue outdoor activities and people at risk who have a history of Lyme disease (as infection with Borrelia does not confer protective immunity against all pathogenic Borrelia species).

Vaccination with OspA was already proven to work in the 1990s and VLA15 pre-clinical data showed that the vaccine has the potential to provide protection against the majority of the Borrelia species pathogenic for humans7.

About Chikungunya

Chikungunya is a mosquito-borne viral disease caused by the chikungunya virus (CHIKV), a Togaviridae virus, transmitted by Aedes mosquitoes. Clinical symptoms include acute onset of fever, debilitating joint and muscle pain, headache, nausea and rash, potentially developing into long-term, serious health impairments. Chikungunya virus causes clinical illness in 72-92% of infected humans around 4 to 7 days after an infected mosquito bite. Complications resulting from the disease include visual, neurological, heart and gastrointestinal manifestations; fatalities have been reported (case fatality rates of 0.1% to 4.9% from epidemics)8 in elderly patients at higher risk. Chikungunya outbreaks have been reported in Asia, Africa, the Americas and

recently (2017) in Europe. As of 2017, there have been more than one million reported cases in the Americas9 and the economic impact is considered to be significant (e.g. Colombia outbreak 2014: $73.6m10). The medical and economic burden is expected to grow as the CHIKV primary mosquito vectors continue to further spread geographically. There are no preventive vaccines or effective treatments available and, as such, chikungunya is considered to be a major public health threat.

About VLA1553

VLA1553 is a monovalent, single dose, live-attenuated vaccine candidate for protection against chikungunya and was granted Fast Track designation by the U.S. Food and Drug Administration (FDA) in December 201811. The vaccine candidate is designed for prophylactic, active, single-dose immunization against chikungunya in humans over one year old. The vaccine targets long-lasting protection and an anticipated safety profile similar to licensed vaccines for active immunization in adults and children. The target population segments are travelers, military personnel and individuals at risk living in endemic regions. The global market for vaccines against chikungunya is estimated at up to €500 million annually12.

VLA1553 is based on an infectious clone (CHIKV LR2006-OPY1) attenuated by deleting a major part of the gene encoding the non-structural replicase complex protein nsP3, aiming for protection against various chikungunya virus outbreak phylogroups and strains13.

In pre-clinical development, a single-vaccine shot was shown to be highly immunogenic in vaccinated Non-Human Primates (NHP) (cynomolgus macaques) and showed no signs of viremia after challenge14. In NHPs, VLA1553 induced a strong, long lasting (more than 300 days) neutralizing antibody response comparable to wild-type CHIKV infections, combined with a good safety profile.

About Valneva SE

Valneva is a biotech company developing and commercializing vaccines for infectious diseases with major unmet needs. Valneva’s portfolio includes two commercial vaccines for travelers: IXIARO®/JESPECT® indicated for the prevention of Japanese encephalitis and DUKORAL®

indicated for the prevention of cholera and, in some countries, prevention of diarrhea caused by ETEC. The Company has various vaccines in development including a unique vaccine against Lyme disease. Valneva has operations in Austria, Sweden, the United Kingdom, France, Canada and the US with approximately 480 employees. More information is available at www.valneva.com.

Valneva Investor and Media Contacts

Laetitia Bachelot-Fontaine Global
Head of Investor Relations & Corporate Communications
M +33 (0)6 4516 7099
investors@valneva.com  

Teresa Pinzolits
Corporate Communications Specialist
T +43 (0)1 20620 1116
communications@valneva.com