Reports of multiple new variants of the SARS-CoV-2 virus have emerged, raising questions about the efficacy of vaccines, but also regarding the utility of diagnostic and other tests. The U.S. FDA’s Tim Stenzel said single-target tests are thus at a greater risk of returning a false negative result, adding that these developers “should consider this carefully” in surveillance of their tests.

Cognito Therapeutics Inc. has revealed that its lead product has received breakthrough device designation from the U.S. FDA for the treatment of cognitive and functional symptoms associated with Alzheimer’s disease. The offering is a noninvasive neurostimulation device using gamma frequency technology and is the initial candidate in the company’s pipeline of digital therapeutics for neurodegenerative diseases and other chronic indications.

The U.S. FDA has issued an action plan for regulation of artificial intelligence and machine learning (AI, ML), which includes issuance of a draft guidance for change control for adaptive algorithms. There is no guarantee a final guidance will emerge before 2022, however, leaving developers with another year – perhaps longer – of uncertainty as to how to handle change control for their algorithms.

LONDON – The U.K. has launched a nationwide free testing program to diagnose COVID-19 in people who are asymptomatic, in the latest attempt to stem the tide of infection. Through the program, all local authorities will provide rapid testing using lateral flow devices. In addition, companies will be provided with free tests to set up workplace screening. Initially, the focus of both strands will be on getting people who cannot work from home to come forward for regular checks.

Helix Opco LLC, a company specializing in population genomics, has received de novo marketing authorization from the U.S. FDA for its whole exome sequencing platform, which covers roughly 20,000 genes. The San Mateo, Calif.-based company also picked up 510(k) clearance from the FDA for the first test to run on the Helix Laboratory Platform, a genetic health risk application for late-onset Alzheimer’s disease. That test has been cleared for over-the-counter use in conjunction with the Helix Laboratory Platform.