Business Wire

Medicago and GSK Announce Positive Phase 3 Efficacy and Safety Results for Adjuvanted Plant-Based COVID-19 Vaccine Candidate

Share

Medicago, a biopharmaceutical company headquartered in Quebec City, and GlaxoSmithKline (GSK) today announce positive efficacy and safety results from the global Phase 3 placebo-controlled efficacy study of Medicago’s plant-based COVID-19 vaccine candidate in combination with GSK’s pandemic adjuvant, conducted in over 24,000 subjects, adults 18 years and above, across six countries.

Vaccine efficacy was demonstrated in an environment dominated by SARS-CoV-2 variants, unlike most published Phase 3 efficacy trials for currently licensed COVID-19 vaccines that were conducted when only the ancestral virus was circulating, making direct comparisons impossible. The overall vaccine efficacy rate against all variants of SARS-CoV-2 was 71% (95% Confidence Interval: CI 58.7, 80.0; Per Protocol Analysis: PP). The corresponding number for people with an initial seronegative status indicating no previous exposure to COVID-19 was 75.6% (95% CI: 64.2-83.7; PP). The vaccine candidate demonstrated efficacy of 75.3% (95% CI: 52.8, 87.9; PP) against COVID-19 of any severity for the globally dominant Delta variant. Efficacy was 88.6% (95% CI: 74.6, 95.6; PP) against the Gamma variant. Although only a small number of severe cases occurred in this study, none occurred in the vaccinated group. No cases of the Alpha, Lambda and Mu variants were observed in the vaccinated group while 12 cases were observed in the placebo group. The Omicron variant was not circulating during the study.

During the study, no related serious adverse events were reported and reactogenicity was generally mild to moderate and transient; symptoms lasting on average only 1 to 3 days. To date, the Phase 3 results have confirmed the safety profile is consistent with Phase 2 results. The frequency of mild fever was low (<10%), even after the second dose.

Full results of the Phase 3 study will be released in a peer-reviewed publication as soon as possible.

Based on these results, Medicago will imminently seek regulatory approval from Health Canada as part of its rolling submission. The vaccine candidate is not approved yet by any regulatory authorities.

“This is an incredible moment for Medicago and for novel vaccine platforms. The results of our clinical trials show the power of plant-based vaccine manufacturing technology. If approved, we will be contributing to the world’s fight against the COVID-19 pandemic with the world’s first plant-based vaccine for use in humans,” said Takashi Nagao, CEO and President at Medicago. “I want to thank everyone who participated in our clinical trials, our collaborators at clinical trial sites, our partners at GSK, the Government of Canada and Government of Quebec, Mitsubishi Tanabe Pharma Corporation, and all of our employees and our shareholders, for their commitment to advancing vaccine science when the world needs it.”

Thomas Breuer, GSK’s global COVID-19 adjuvanted vaccines lead and Chief Global Health Officer, said, “These are encouraging results given data were obtained in an environment with no ancestral virus circulating. The global COVID-19 pandemic is continuing to show new facets with the current dominance of the Delta variant, upcoming Omicron, and other variants likely to follow. The combination of GSK’s established pandemic adjuvant with Medicago’s plant-based vaccine technology has significant potential to be an effective, refrigerator-stable option to help protect people against SARS-CoV-2.”

Medicago has been developing its plant-based technology for the past 20 years, using unique technology to produce Virus-Like Particles (VLP) for its protein vaccines. VLPs are designed to mimic the native structure of viruses, allowing them to be easily recognized by the immune system. Because the VLPs lack core genetic material, they are non-infectious and unable to replicate. VLP vaccines developed by other technologies, have traditionally been used worldwide for more than 30 years.

“I am pleased to see our vaccine candidate moving forward and bringing to the world the first plant-based vaccine against COVID-19, diversifying the pool of vaccines available to help improve public health and protect more people,” said Yosuke Kimura, Chief Scientific Officer at Medicago.

Medicago has initiated the regulatory filing process for the adjuvanted plant-based COVID-19 vaccine candidate with FDA and MHRA. Preliminary discussion is underway with the WHO for preparation of the submission. Medicago has also initiated Phase 1/2 trial in Japan where it plans to submit for regulatory approval in combination with the Phase 2/3 global study results next spring.

About the Phase 2/3 study

The Phase 2/3 study has a multi-portion design to confirm that the chosen formulation and dosing regimen of the vaccine candidate (two doses of 3.75 µg of antigen combined with GSK's pandemic adjuvant given 21 days apart) has an acceptable vaccine profile in healthy adults 18-64 years of age, elderly subjects aged 65 and over and adults with comorbidities.

The Phase 2 portion of the trial was a randomized, observer-blind, placebo-controlled study to evaluate the safety and immunogenicity of the adjuvanted recombinant COVID-19 plant-based vaccine candidate in subjects aged 18 and above. It was conducted in multiples sites in Canada and the United States in a population composed of healthy adults (18-64y), elderly adults (over 65y) and adults with comorbidities. Each age group enrolled up to 306 subjects randomized 5:1 to receive the adjuvanted vaccine candidate: placebo and with 2:1 stratification in older adults (65-74 and ≥75). All subjects are being followed for a period of 12 months after the last vaccination for assessment of safety and the durability of the immune responses which will be the final analysis.

The Phase 3 portion of the trial was launched on March 16th, 2021, and was an event-driven, randomized, observer-blinded, crossover placebo-controlled design that evaluated the efficacy and safety of the vaccine candidate formulation, compared to placebo, in over 24,000 subjects across Canada, United States, United Kingdom, Mexico, Argentina, and Brazil.

The data communicated are Per-Protocol, meaning only data from participants who followed the protocol throughout the study are included. A parallel Intention to Treat (ITT) analysis that considers the treatment received by all participants, without regard to protocol adherence yielded very similar results.

The vaccination regimen calls for two doses (3.75 microgram of antigen in combination with GSK’s pandemic adjuvant) given intramuscularly 21 days apart. The vaccine is stored at 2 °C to 8 °C, enabling the use of traditional vaccine supply and cold chain channels.

About Medicago

Medicago is on a mission to improve global public health using the power of plants. Founded in 1999 with the belief that innovative approaches and rigorous research would bring new solutions in healthcare, Medicago is a pioneer in plant-based therapeutics. We are proudly rooted in Quebec, with manufacturing capacity in both Canada and the US. Our passionate and curious team of over 500 scientific experts and employees are dedicated to using our technology to provide rapid responses to emerging global health challenges, and to advancing therapeutics against life-threatening diseases worldwide. Medicago is an affiliated company of Mitsubishi Tanabe Pharma Corporation.

For more information: www.medicago.com

About GSK and its commitment to tackling COVID-19

GSK is a science-led global healthcare company with a special purpose: to help people do more, feel better, live longer. For further information please visit www.gsk.com/about-us.

GSK is collaborating with companies and research groups across the world working on promising COVID-19 vaccine candidates through the use of our innovative vaccine adjuvant technology. The use of an adjuvant is of particular importance in a pandemic situation since it may reduce the amount of vaccine protein required per dose, allowing more vaccine doses to be produced and therefore contributing to protecting more people. GSK does not expect to profit from COVID-19 vaccines during the pandemic phase and will invest any short-term profit in coronavirus related research and long-term pandemic preparedness, either through GSK internal investments or with external partners.

About Mitsubishi Tanabe Pharma Corporation

Mitsubishi Tanabe Pharma Corporation (MTPC) Group, the majority parent company of Medicago, is one of the large Japanese pharmaceutical companies, with its headquarters in Osaka, Japan. It positions vaccines as one of its key R&D areas under its Medium-Term Management Plan 21-25 and is also working to develop new modalities of vaccines. MTPC Group will further contribute to the prevention of infectious diseases which is one of the world’s important social issues, by delivering a new option of plant-based VLP vaccine as a new type of vaccine. For further information please visit https://www.mt-pharma.co.jp/e/.

To view this piece of content from cts.businesswire.com, please give your consent at the top of this page.

Contact information

Medicago media contact (English):
Tanvir Janmohamed (North America)
+1 613 404 3611 (Toronto)
media.en@medicago.com

Gabby Koumis (UK/Global)
+44 (0) 78 3328 6784 (London)
media.en@medicago.com

GSK enquiries:
Media enquiries:

Simon Moore +44 (0) 20 8047 5502 (London)
Kathleen Quinn +1 202 603 5003 (Washington DC)

Analyst/Investor enquiries:

James Dodwell +44 (0) 20 8047 2406 (London)
Jeff McLaughlin +1 215 751 7002 (Philadelphia)

About Business Wire

For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.

Subscribe to releases from Business Wire

Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.

Latest releases from Business Wire

Feeling ’22: Mary Kay Inc. Announces Awards, Milestones, and Accomplishments From First Half of the Year28.7.2022 20:02:00 EEST | Press release

Mary Kay Inc. is feeling ’22. Throughout the first half of the year, the iconic global entrepreneurship company has furthered its innovations in skin science, continued its social impact efforts, and garnered several prestigious awards for its business and leadership. It’s a thing of beauty—and the nearly 60-year-old brand is just getting started. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20220728005228/en/ Mary Kay logo (Graphic: Mary Kay Inc.) 2022 AWARDS & HIGHLIGHTS 30 total awards for business excellence, social impact and sustainability 10 employer awards recognizing Mary Kay as a great place to work and for operational excellence 7 awards for Mary Kay’s c-suite and senior leadership 17 self-released reports reinforcing Mary Kay’s operational and philanthropic efforts supporting its sustainability commitments for its Enriching Lives Today for a Sustainable Tomorrow strategy 3 mentions in annual reports from social i

Asaf Ashkenazi Named CEO of Verimatrix28.7.2022 19:00:00 EEST | Press release

Regulatory News: Verimatrix (Euronext Paris: VMX) (Paris:VMX), today announced the appointment of Asaf Ashkenazi as Chief Executive Officer effective Monday, August 1st, 2022. Amedeo D’Angelo, Chairman and Chief Executive Officer since 2015, remains Executive Chairman of Verimatrix effective the same day. Asaf Ashkenazi joined Verimatrix in 2018 and currently serves as Chief Operating Officer. He will lead the company’s ongoing business model transformation announced last year that focuses on recurring subscription-based revenue sources and new products. “This evolution and reinforcement of the Verimatrix governance structure aligns well with the company’s needs as we further the progression of our business model,” Amedeo D’Angelo said. “I look forward to working closely with Asaf in his newly expanded role as CEO during this strategic development of Verimatrix.” Previously leading the company’s R&D, product, sales and marketing operations, Asaf Ashkenazi will continue to harness his d

GUESS Heads to Granada for the 2022 Fall/Winter Advertising Campaign28.7.2022 18:00:00 EEST | Press release

The new GUESS Fall-Winter 2022 advertising campaign sees the brand off to explore the history-steeped streets of Granada, Spain. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20220728005098/en/ GUESS Heads to Granada for the 2022 Fall/Winter Advertising Campaign (Photo: Business Wire) The FW22 campaign is immortalized through the lens of fashion photographer Tatiana Gerusova, under the guidance of GUESS?, Inc.’s Chief Creative Officer, Paul Marciano. The new campaign features a sizzling lineup: German-born, Polish fashion model Kim Dammer, Serbian model Nina Kostić, Spanish model Lidia Santos, Italian model Mario Ermito, and French model Xavier Grey. GUESS Women The campaign showcases an enticing array of GUESS pieces, highlighting must-have accessories and elevated animal and botanical prints. The collection brings a fresh and youthful breeze of contemporary color and style to grey winter days. Against the alluring continent

Innovaderm Bolsters European Presence With Two Newly-Established Operations Hubs (Spain & Poland)28.7.2022 17:00:00 EEST | Press release

Innovaderm announced today that its strategic European expansion initiative has reached a major milestone with the launch of two key centres of operations in Poland and Spain. Biotechnology and pharmaceutical companies can officially partner with the CRO’s team of experts in Europe to manage clinical trials in psoriasis, acne, atopic dermatitis and other dermatology indications. This includes adherence to stringent regulatory requirements, patient recruitment, site selection, clinical monitoring and protocol writing. “To date, we have successfully completed more than 500 clinical trials at 2,900 sites,” says Dave Selkirk, Innovaderm’s Chief Operating Officer. “The presence of two operations hubs in Europe will allow us to go one step further and accelerate the development of promising therapies that have the potential to transform lives. As we look to the future, our goal is to continue supporting innovation in research and the increasing number of patients with skin conditions worldwi

Echosens Partners with World Hepatitis Alliance on World Hepatitis Day, July 28, Urges Importance of Testing and Treatment28.7.2022 16:07:00 EEST | Press release

Echosens, a high-technology company offering liver diagnostic solutions, establishes its support of World Hepatitis Day (WHD), July 28 by partnering with the World Hepatitis Alliance as a bronze sponsor. The commemoration calls for greater awareness of the 357 million people who live with viral hepatitis but are unaware of it. The campaign’s theme “I can’t wait” highlights the need to accelerate the fight against viral hepatitis and the importance of testing and treatment for the real people who need it. “Echosens recognizes that every 30 seconds, someone in the world dies from a hepatitis-related illness, and we join hands with organizations throughout the world to advance increased vigilance around liver health,” says Dominque Legros, Echosens Group CEO. “It is gratifying to see that this year's theme for World Hepatitis Day aligns with our mission for early detection that can result in more effective intervention, treatment and better outcomes.” Viral hepatitis is an inflammation of

In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.

Visit our pressroom