Euglena and Leave a Nest, OMR,
We constructed and verified an antibody test system for the new coronavirus infection (COVID-19) under joint development.

Euglena Co., Ltd.
Leave a Nest Co., Ltd.
Made-to-order Medical Research Co., Ltd.

Euglena Co., Ltd. (President: Mitsuru Izumo), Leave a Nest Co., Ltd. (Vice President and CTO: Jyo Inoue), and Custom-made Medical Research Co., Ltd. (President: Yasufumi Murakami) are jointly developing an antibody test system. We built it and verified it * 1.
* 1 The start of joint development was announced on June 15, 2020 https://www.euglena.jp/news/20200615-2/

We confirmed the accuracy of the constructed antibody test system using clinical samples (hereinafter referred to as samples) that have obtained informed consent provided by medical institutions.

As a result of performing an antibody test constructed on the samples that received a positive test in the PCR test, a positive test was obtained in all 75 samples collected after 11 days from the onset. This shows that the sensitivity is 100% in the test.
Similarly, in the antibody test performed on 36 samples that had a negative PCR test, all the samples were negative. This result shows that the specificity is 100% for both sensitivity under the conditions of the test * 2.

Regarding the antibody test system constructed through joint development, based on the above test results, those who have antibodies against the new coronavirus are correctly identified, and those who do not have antibodies are erroneously determined to be positive. It was suggested that it may be possible to carry out an accurate test that is never done. This result is an important progress in the practical application of a highly accurate test system, and we will proceed with research and development with the aim of establishing a more reliable antibody test system in the future.
* 2 The specificity and sensitivity percentages obtained this time indicate the degree of agreement with the PCR test.

<About Euglena Co., Ltd.>
In 2005, we succeeded in establishing the world's first edible outdoor mass culture technology for the Euglena A company listed on the First Section of the Tokyo Stock Exchange that develops and sells functional foods and cosmetics that utilize the Euglena produced on Ishigaki Island, and conducts research and development for biofuel production. https://euglena.jp

<About Leave a Nest Co., Ltd.>
Based on the philosophy of "realizing the development of science and technology and contributing to the earth," we focus on science education, human resource development, research and development, and the creation of new businesses. Work on a typical project. https://lne.st/

<About Custom-made Medical Research Co., Ltd.>
Professor Yasufumi Murakami of Tokyo University of Science launched and established the LIMAXYS method, an innovative antibody production technology. An antibody drug venture that has made it possible to produce membrane protein antibodies, which was difficult to produce until now. https://www.omr.co.jp/

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Euglena Co., Ltd. Corporate Communication Division