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Roche announced that it has launched a high-throughput SARS-CoV-2 antigen test as an aid in the diagnosis of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infections, in markets accepting the CE Mark. Roche has also filed for Emergency Use Authorisation (EUA) from the U.S. Food and Drug Administration.
The Elecsys® SARS-CoV-2 Antigen test is a highly accurate laboratory immunoassay for the in vitro qualitative detection of the nucleocapsid antigen of SARS?CoV?2. In clinical studies, the Elecsys SARS-CoV-2 Antigen test showed a 94.5% sensitivity across 200 PCR confirmed symptomatic individuals* and a 99.9% specificity across 2747 PCR negative symptomatic and screening individuals. It is planned to ramp up production to have a double-digit million number of tests per month, in early 2021, depending on the demand of healthcare systems, globally. The test is performed by healthcare professionals and uses nasopharyngeal or oropharyngeal swab samples from patients with symptoms suggestive of COVID-19, or people with either known or suspected exposure to SARS-CoV-2. A widely available, laboratory-based automated antigen assay allows for cost and error reduction due to removal of manual handling as well as fast turn-around times and high test throughput.
“Healthcare systems remain under significant pressure to deliver robust testing options, with a sufficient number of tests available”, said Thomas Schinecker, CEO Roche Diagnostics. “The launch of our high-throughput antigen test will provide additional testing capacity to reliably support healthcare systems in diagnosing SARS-CoV-2 infection, as a supplement to PCR testing.”
About the Elecsys SARS-CoV-2 Antigen test
Roche’s Elecsys SARS-CoV-2 Antigen test is an immunoassay intended for the qualitative detection of SARS-CoV-2 present in the respiratory tract including nasopharynx and oropharynx. The Elecsys SARS-CoV-2 Antigen test is performed by healthcare professionals and could be used as an alternative or in conjunction with PCR testing. This is highly beneficial where reliable laboratory PCR testing is limited or not available. In symptomatic individuals, a positive result with the Elecsys SARS-CoV-2 Antigen test indicates an active SARS-CoV-2 infection with a likelihood of 94.5%. A negative result may require to be confirmed with a PCR test or repeated (antigen test) after one to two days, if other clinical indications point to a SARS-CoV-2 infection.
The Elecsys SARS-CoV-2 Antigen immunoassay runs on all cobas e immunochemistry analysers which are widely available around the world and allow for these test to be run alongside other COVID-19 infectious diseases diagnostic markers available from Roche, which run on the cobas e systems. These fully automated systems can provide test results in 18 minutes for a single test (excluding time for sample collection, transport, and preparation), with a throughput of up to 300 tests per hour from a single analyser, depending on the analyser.
About antigen testing
An antigen test detects proteins which are structural or functional components of a pathogen and are thus very specific to that pathogen.2 In this case, the test would provide a qualitative “yes/no” answer on the presence of the pathogen in the patient sample. If the target antigen is present in sufficient concentrations in the sample, it will bind to specific antibodies and generate a positive result, indicating an active infection.
In general, antigen tests have a high specificity, though are not as sensitive as PCR tests that amplify the target viral DNA or RNA sequence in order to generate a quantifiable signal to indicate the presence of the virus in a sample. Therefore, to make up for the potential decrease in sensitivity of an antigen test, negative results should be analysed together with additional patient factors, such as COVID-19 exposure history, clinical symptoms, additional test results to help guide the diagnosis and subsequent treatment of the patient.
About Roche
Roche is a global pioneer in pharmaceuticals and diagnostics focused on advancing science to improve people’s lives. The combined strengths of pharmaceuticals and diagnostics under one roof have made Roche the leader in personalised healthcare – a strategy that aims to fit the right treatment to each patient in the best way possible.
Roche is the world’s largest biotech company, with truly differentiated medicines in oncology, immunology, infectious diseases, ophthalmology and diseases of the central nervous system. Roche is also the world leader in in vitro diagnostics and tissue-based cancer diagnostics, and a frontrunner in diabetes management.
Founded in 1896, Roche continues to search for better ways to prevent, diagnose and treat diseases and make a sustainable contribution to society. The company also aims to improve patient access to medical innovations by working with all relevant stakeholders. More than thirty medicines developed by Roche are included in the World Health Organization Model Lists of Essential Medicines, among them life-saving antibiotics, antimalarials and cancer medicines. Moreover, for the twelfth consecutive year, Roche has been recognised as one of the most sustainable companies in the Pharmaceuticals Industry by the Dow Jones Sustainability Indices (DJSI).
The Roche Group, headquartered in Basel, Switzerland, is active in over 100 countries and in 2019 employed about 98,000 people worldwide. In 2019, Roche invested CHF 11.7 billion in R&D and posted sales of CHF 61.5 billion. Genentech, in the United States, is a wholly owned member of the Roche Group. Roche is the majority shareholder in Chugai Pharmaceutical, Japan.
