Respiratory syncytial virus, which puts millions of otherwise healthy infants in the hospital each year, could soon face a new foe. Top-line results from a phase III test of the extended half-life monoclonal antibody nirsevimab, developed by Astrazeneca plc and Sanofi SA, found it reduced lower respiratory tract infections requiring medical attention due to the virus in both healthy preterm and term infants.
As part of a U.S. FDA evaluation of confirmatory trials for anti-PD-1/PD-L1 antibodies, the agency’s Oncologic Drugs Advisory Committee (ODAC) is being asked this week to consider whether three blockbuster biologics should continue to be available for certain cancer indications for which they received accelerated approval. At question is whether the data from the confirmatory trials for the Roche Group’s Tecentriq (atezolizumab), Merck & Co. Inc.’s Keytruda (pembrolizumab) and Bristol Myers Squibb Co.’s Opdivo (nivolumab) has proved sufficient benefit in particular indications and, if not, whether alternative or ongoing trials could do so.
DUBLIN – The European Medicines Agency (EMA) has reiterated its support for Astrazeneca plc’s Vaxzervia COVID-19 vaccine, following an interim analysis of a data review, which the agency’s Committee on Human Medicinal Products (CHMP) has conducted over the past two weeks.
LONDON – A large scale U.K. study looking at the impact of COVID-19 vaccinations on antibody responses and new infections in 373,402 people in the general population has shown a single dose of vaccine cut infections by 65%. Symptomatic infections fell by 74% and infections with no reported symptoms by 57%, 21 days after receiving the first dose of either Astrazeneca plc’s or Pfizer Inc./Biontech SE’s vaccine.
In addition to safety questions about its COVID-19 vaccine, Johnson & Johnson is facing manufacturing challenges as a key partner, Emergent Biosolutions Inc., has yet to get FDA approval to manufacture or distribute the vaccine or its components in the U.S. That approval could be awhile in coming. On April 21, a day after completing its onsite inspection of Emergent’s Bayview plant in Baltimore, Md., the FDA released Form 483 from its inspection, revealing nine observations related to cross-contamination issues, lack of employee training and poorly designed and maintained facilities.
LONDON – The EMA’s safety committee has concluded that unusual blood clots with low blood platelets are a rare side effect of Johnson & Johnson Inc.’s COVID-19 vaccine and that a warning should be added to the label. The decision is based on all available evidence, which currently consists of eight reports from the U.S. of serious cases of thrombosis, one of which was fatal. All cases were in people under 60 years of age, and within three weeks after vaccination, the majority in women. One case occurred during the clinical trials.
As COVID-19 deaths across the globe top 3 million, with more than 1 million in Europe alone, the global demand is increasing for mRNA vaccines, even as sponsors of adenovirus vaccines push back against ongoing safety concerns. Last week, the World Health Organization’s (WHO) Regional Office for Europe reported that the confirmed COVID-19 death toll for the region had surpassed 1 million, with 1.6 million new cases being reported every week. More than 171 million doses of COVID-19 vaccines have been administered in the region, translating to nearly 13% of the European population receiving one dose and close to 6% completing both doses of the vaccines.
DUBLIN – A newly published retrospective analysis of the electronic health care records of more than 500,000 COVID-19 patients has found that infection with SARS-CoV-2 carries “a significantly and substantially” greater risk of cerebral venous thrombosis (CVT) than does either one of the two approved mRNA COVID-19 vaccines or infection with influenza virus.
The current pause on administering Johnson & Johnson’s (J&J) one-dose COVID-19 vaccine likely will continue in the U.S. after the CDC’s Advisory Committee on Immunization Practices (ACIP) declined to make a recommendation on a path forward April 14.
LONDON – The U.K. is moving on to the next phase of testing mixed dosing schedules for COVID-19 vaccines, launching a study in which it will assess the effect of using Moderna Inc. or Novavax Inc.’s products as the second dose in a heterologous prime boost trial.
