Is this the soluble ACE2 mentioned?
https://www.clinicaltrialsarena.com/news/ubc-apeiron-biologi...
https://pipelinereview.com/index.php/2020022673884/Proteins-...
https://connect.myesr.org/course/novel-coronavirus-outbreak-...
It was initially discovered and developed during the SARS epidemic - https://www.nature.com/articles/nm1267