• UK approval for molnupiravir comes ahead of U.S. decision
  • UK and NHS to confirm deployment plans in due course
  • UK secured just under half a million courses last month
  • Drug will be given to higher risk patients
  • Approval comes as UK struggles to tame infections

Nov 4 (Reuters) – Britain on Thursday became the first country in the world to approve a potentially game-changing COVID-19 antiviral pill jointly developed by U.S.-based Merck & Co Inc (MRK.N) and Ridgeback Biotherapeutics, in a boost to the fight against the pandemic.

Britain’s Medicines and Healthcare products Regulatory Agency (MHRA) recommended the drug, molnupiravir, for use in people with mild to moderate COVID-19 and at least one risk factor for developing severe illness, such as obesity, older age diabetes, and heart disease.

It will be administered as soon as possible following a positive COVID-19 test and within five days of the onset of symptoms, the regulator said, citing clinical data.

The green light is the first for an oral antiviral treatment for COVID-19 and the first for a COVID-19 drug that will be administered widely in the community. U.S. advisers will meet on Nov. 30 to review the drug’s safety and efficacy data and vote on whether molnupiravir should be authorized. Read more

The pill, which will be branded as Lagevrio in Britain, is designed to introduce errors into the genetic code of the coronavirus that causes COVID-19 and is taken twice a day for five days.

Drugs in the same class as molnupiravir have been linked to birth defects in animal studies. Merck, known as MSD outside of the United States and Canada, has said animal testing shows that molnupiravir is safe, but the data have not yet been made public.

Treatments to tackle the pandemic, which has killed more than 5.2 million people worldwide, have so far focused mainly on vaccines. Other options, including Gilead’s (GILD.O) infused antiviral remdesivir and generic steroid dexamethasone, are generally only given after a patient has been hospitalised.

Merck’s Molnupiravir has been closely watched since data last month showed it could halve the chances of dying or being hospitalised for those most at risk of developing severe COVID-19 when given early in the illness. read more

Professor Stephen Powis, national medical director for the National Health Service (NHS) in England, said the drug would be administered to patients at higher risk of complications as Britain heads into one of the most challenging winters ever.

A wider rollout will follow if it is clinically and cost effective in reducing hospitalisations and death, he added.

Many other big economies, including Germany, France and Israel, have either retained some basic COVID-19 measures like mask mandates or reintroduced them in response to rising cases.

The UK government has said its focus remains on administering vaccine boosters and inoculating 12- to 15-year-olds.

“With no compromises on quality, safety and effectiveness, the public can trust that the MHRA has conducted a robust and thorough assessment of the data (on molnupiravir),” MHRA chief June Raine said in a statement.

Last month, Britain agreed a deal with Merck to secure 480,000 courses of molnupiravir.

Professor Penny Ward, an independent pharmaceutical physician, welcomed the approval, but said the NHS needed to outline its plans for rollout and cautioned that supplies were likely to be tight given the strong global demand.

“Comments made by Mr Javid today suggest that it may be made available via a clinical trial, presumably to investigate its effectiveness in vaccinated patients with breakthrough infections, as the original study incorporated unvaccinated adults,” she said.

If given to everyone becoming unwell, the nearly half a million courses would not last very long given the more than 40,000 current daily case rate, she said.

“We are now working across government and the NHS to urgently get this treatment to patients initially through a national study so we can collect more data on how antivirals work in a mostly vaccinated population,” UK vaccines minister Maggie Throup told parliament.

Pressures

The speedy approval in Britain, which was also the first Western country to approve a COVID-19 vaccine, comes as it struggles to tame soaring infections.

Britain has about 40,000 daily cases of COVID-19, according to the latest seven-day average. That is second only to the roughly 74,000 a day in the United States, which has five times more people, and has fuelled criticism of the government’s decision to abandon most pandemic-related restrictions

Data released on Wednesday night showed COVID-19 prevalence in England hit its highest level on record last month, led by a high number of cases in children and a surge in the south-west of the country. read more

Pressure is growing on the government to implement its “Plan B” aimed at protecting the NHS from unsustainable demands, involving mask mandates, vaccine passes and work-from-home orders.

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