TP research note1 May 2020 10:25
Avacta Group plc
Avacta has announced its second partnership to exploit the recently generated Affimer binders to the SARS-COV-2 virus in a high-throughput COVID-19 antigen test. This follows the Group’s stated intention to partner its SARS-COV-2 spike protein Affimer reagents with several select companies in order to support antigen test development on multiple diagnostic platforms. This is expected to contribute most effectively to the urgent need for rapid antigen tests to diagnose this coronavirus infection, such that it can be mass produced for rapid, professional screening of large populations and, potentially for self-testing by consumers themselves. This is crucial to limiting and tracking the spread of this disease. The two companies are aiming to have a BAMSTM test ready for clinical validation, regulatory approval and manufacturing in June. Although the full terms of business have not been disclosed, Avacta will receive a royalty on the sales of Adeptrix test kits. As such this represents another important step forward, not only in terms of development of a reputation-building, high- profile new product of global significance, but also in terms of Avacta maximising the near and longer-term commercial opportunities for its platform.
Following on from the Avacta/Cytiva Partnership announced just five weeks ago, this new collaboration with Adeptrix (Beverly, MA, USA) is to develop a high throughput COVID-19 antigen test using Adeptrix’s proprietary bead-assisted mass spectrometry (‘BAMSTM’) platform. The two companies will collaborate in order to develop and manufacture an Affimer-based BAMS coronavirus antigen test that will provide clinicians with a significant expansion of the available testing capacity for COVID-19 infection in hospitals.
Adeptrix’s novel BAMS platform combines enrichment of the sample to improve sensitivity with the power of mass-spectrometry to improve specificity. Hundreds of samples per day can be analysed by a single technician using BAMS, exceeding the capacity of single PCR machine and thereby making it a very attractive high-throughput technique for COVID-19 screening in the clinical setting. The diagnostic test will allow hospitals around the world to utilise their existing installed base of mass spectrometers that are not currently used for COVID-19 testing, thus contributing significantly to the increase in global testing capacity. Significantly also, mass spectrometry can enhance the diagnostic utility of immunoassays, as it is capable of monitoring both existing and emerging viral strains by accurately measuring the molecular components of the virus. BAMS thus provides an ideal multiplexing platform to obtain higher specificity for monitoring COVID-19 infection. Avacta’s own recently developed Affimer reagents that bind the SARS-COV-2 spike protein, will be used to provide the capture and enrichment of the virus particle from the sample which could be saliva, nasopharyngeal swabs or serum.