The Biden administration may have jumped ahead of the FDA review when it announced last month that it planned to roll out COVID-19 boosters by Sept. 20, but that’s not likely to happen when it comes to the timing of vaccines for young children.
LONDON – Conflicting data from around the world on the extent to which the Delta variant of SARS-CoV-2 is reducing the effectiveness of vaccines is generating uncertainty over the need, or not, for booster programs.
The Biden administration’s plan to roll out COVID-19 boosters by Sept. 20 could get pushed back – pending the outcome of an FDA advisory committee meeting and how quickly the FDA acts on the adcom’s recommendation. Peter Marks, director of the FDA's Center for Biologics Research and Evaluation, announced Sept. 1 that the agency will convene its Vaccines and Related Biological Products Advisory Committee for a virtual meeting Sept. 17.
In another cautionary tale for JAK inhibitors, the U.S. FDA is requiring updated boxed warnings for three drugs in the class that are approved to treat inflammatory conditions – Pfizer Inc.’s Xeljanz/Xeljanz XR (tofacitinib), Eli Lilly and Co.’s Olumiant (baricitinib) and Abbvie Inc.’s Rinvoq (upadacitinib).
The race to develop better antivirals for COVID-19 is heating up after Pfizer Inc. and Merck & Co. Inc. pushed ahead with clinical development of late-stage candidates, while Rigel Pharmaceuticals Inc. announced encouraging midstage data.
Pfizer Inc. reported on Aug. 30, 2021, that its JAK inhibitor, abrocitinib, beat Dupixent (dupilumab, Regeneron Pharmaceuticals Inc./Sanofi SA) in a head-to-head study of patients with moderate to severe atopic dermatitis. In the JADE DARE study, a higher percentage of patients taking abrocitinib had a 4-point improvement in the severity of Peak Pruritus Numerical Rating Scale (PP-NRS4) from baseline to week two compared to Dupixent.
Higher antibody titer levels were found in participants receiving two doses of Moderna Inc.’s COVID-19 vaccine compared to those receiving the Pfizer Inc.-Biontech SE vaccine, according to a research letter published in JAMA.
The CDC’s Advisory Committee on Immunization Practices (ACIP) heard a safety update on COVID-19 vaccines, took up the matter of booster shots, and voted on whether to recommend the vaccine from Pfizer Inc. and Biontech SE for people 16 and older, now that it’s fully licensed. Under an emergency use authorization, the vaccine can be given to people 12-15 years old.
Johnson & Johnson has announced new data supporting use of its COVID-19 vaccine as a booster shot, after separate trial data from the U.K. showed effects of several vaccines waned after six months.
As many lower and middle-income countries continue to scramble for COVID-19 vaccine doses, which are largely being manufactured in Europe and the U.S., their own regulatory rules may be getting in the way in some instances.
