The run on at-home COVID-19 tests may be for naught. The FDA warned that the popular rapid antigen tests recommended to keep New Year’s Eve revelers, relatives visiting elderly grandparents and workers exposed to the coronavirus from spreading COVID-19 are less likely to detect the Omicron variant than earlier strains of the virus. “Early data suggest that antigen tests do detect the Omicron variant but may have reduced sensitivity,” the agency said in an update on Dec. 29. Despite the higher rate of false negatives, the FDA said individuals should continue to use the tests. Those experiencing symptoms or with a high likelihood of infection based on exposure should follow-up with a molecular test if their antigen test returns a negative result.

The Verifying Accurate Leading-edge IVCT Development (VALID) Act seems poised for passage in 2022, a bit of welcome relief for those stuck in the regulatory twilight world of the lab-developed test (LDT). However, Carly McWilliams, director of regulatory policy for North America for Roche Inc., said recently at the recent Food and Drug Law Institute enforcement meeting that the VALID Act is likely to leave the question of a user fee schedule for a future Congress, given that the associated rulemaking, guidance development and compliance activities are likely to consume the better part of, if not the entirety of, the next five years.

In a move that will substantially expand the number of livers available for transplantation, the FDA granted premarket approval to Organox Ltd.’s Metra normothermic machine perfusion device for both donors after brain death (DBD) and donors after circulatory death (DCD). The approval allows preservation of organs by Metra for up to 12 hours.

Some U.S. FDA warning letters are mostly about documentation, but the key consideration in the widely publicized Dec. 9 FDA warning letter to Dublin-based Medtronic plc seems to be whether Medtronic had a proper understanding of the risk created by malfunctioning infusion pump retainer rings. That difference of opinion regarding risk took a significant bite out of the company’s shares and boosted the fortunes of its rivals in the diabetes space, a cautionary tale regarding the hazards associated with a failure to understand how the FDA sees the risk of device malfunction. The FDA had reported in October 2021 a pair of recalls of Medtronic’s Minimed insulin pumps, although one of the issues cited was related to cybersecurity concerns. The two recalls affected nearly half a million units combined, and could have significantly affect access for some patients.

The FDA has delivered on a final guidance for non-clinical and clinical investigations of devices used for treatment of benign prostatic hyperplasia (BPH), needing only a year and a half to convert the draft guidance into a final version. The final guidance retains the draft’s recommendation that pivotal studies follow patients for at least a year, a provision some in the med-tech industry saw as unnecessary in some instances. The scope of the July 2020 draft included non-clinical testing, a novelty compared to previous guidance on the topic. The scope of this latest guidance includes four product codes, including KNS for endoscopic electrosurgical instruments, and the FDA included several specific suggestions for the use of thermotherapy and permanent prostatic stents as treatments for BPH.

Privately held Leo Pharma Inc. has worked its way through a complete response letter issued in April to see the FDA approve Adbry (tralokinumab-ldrm) for treating moderate to severe atopic dermatitis in adults. The CRL noted FDA requests for additional data related to the device component, a prefilled syringe of tralokinumab, but it did not request new efficacy or safety data related to the drug product formulation. In April and on Dec. 28, the company did not provide details on the device-related data that were requested.

French remote monitoring and software startup Implicity SAS won FDA clearance for its ILR ECG Analyzer, a medical algorithm that analyzes electrocardiogram data from implantable loop recorders (ILRs). The company plans to launch the artificial intelligence (AI)-powered algorithm, which also is CE marked, in both the U.S. and Europe beginning next month.

Novartis AG’s FDA go-ahead for Leqvio (inclisiran), the first and only small interfering RNA therapy to lower LDL-C, “should come as a relief, given fears that the pandemic could again limit FDA's ability to conduct manufacturing-site inspections,” Jefferies analyst Peter Welford said. PCSK9-targeting Leqvio’s Dec. 22 approval, which came slightly ahead of the Jan. 1, 2022, PDUFA date, landed after a complete response letter about a year ago, citing unresolved facility inspection-related conditions. The drug is dosed twice per year, unlike competitors in the space.

Device makers have been making use of computational modeling and simulation (CMS) for device design for a number of years, and the FDA has released a draft guidance for how agency reviewers will assess the credibility of those models. However, the agency said there is a paucity of analytical methods for evaluating these tools, a factor that may add drag to the agency’s review of industry’s use of products and data thus developed.