The FDA on Wednesday signed off on Pfizer’s Covid-19 pills, which are meant to help keep people out of the hospital.
The news comes at a crucial moment, as the Omicron variant has taken over Delta as the prominent strain in the US, and as monoclonal antibody infusions will likely be in very short supply as two of the three currently marketed are ineffective against Omicron.
Pfizer will see early supply constraints of their pills, meaning doctors will have to be very careful on how they’re doled out. And if Merck’s pill is authorized soon too, there may be more options, although there’s also a drastic difference in efficacy between the two.
‘I don’t think you would find anyone who would prefer the Merck pill to the Pfizer pill, given the data evident so far,’ Walid Gellad, a professor of medicine at the University of Pittsburgh, told Endpoints News.
Merck’s pill saw its efficacy plummet between interim and final analyses in its pivotal trial — from a 50% relative reduction in hospitalizations and deaths at the interim to just 30% in the final results — meaning that more doctors will likely rely on the Pfizer pill. There are also questions about how Merck’s pill works, which led France’s experts to reject it.
Pfizer, meanwhile, recently said that its pill, known commercially as Paxlovid, proved to reduce the relative risk of hospitalization or death by 89% (within three days of symptom onset) and 88% (within five days of symptom onset) compared to placebo in a trial of more than 2,000 people.
But Gellad warned that the ‘benefit of the pills definitely goes down in vaccinated people, and the magnitude of that reduction in benefit is still not clear. We only got preliminary data in the press release about impact on high-risk vaccinated people in the non-completed trial. There will be some benefit, but presumably not nearly the impact as on unvaccinated.’
The Pfizer pill is authorized for those over 12 years of age, weighing at least 88 pounds, with positive results of direct SARS-CoV-2 testing, and who are at high risk for progression to severe Covid, including hospitalization or death. But there are certain restrictions, with FDA saying Paxlovid is not recommended in patients with severe kidney or severe liver impairment, adding:
Because Paxlovid works, in part, by inhibiting a group of enzymes that break down certain drugs, Paxlovid is contraindicated with certain drugs that are highly dependent on those enzymes for metabolism and for which elevated concentrations of certain drugs are associated with serious and/or life-threatening reactions. Paxlovid is also contraindicated with drugs that, conversely, strongly induce those same enzymes, leading to the faster breakdown of nirmatrelvir or ritonavir, as reduced concentrations of nirmatrelvir or ritonavir may be associated with potentially losing virologic response and developing viral resistance. Paxlovid cannot be started immediately after discontinuing such medications because the effects of those medications remain after discontinuation.
But with very limited supplies of each, it remains unknown who exactly may get access. The US may have about 400,000 courses of Merck’s pill available in the next few days, and 65,000 courses of Pfizer’s pill, according to a Bloomberg report from this morning.
But by the end of January, the US government expects to have about 3 million courses of Merck’s pill and 250,000 of Pfizer’s.
Also by the end of January, the US will have about 300,000 courses of the GlaxoSmithKline and Vir mAb treatment, and another 55,000 doses were shipped out this week.
CALQUENCE is a registered trademark of the AstraZeneca group of companies.
At the 2021 American Society of Hematology (ASH) Annual Meeting & Exposition, blood cancer researchers from around the world gathered virtually to discuss the progress that has been made in the field of hematology. Over the past decade, that progress has been tremendous. We’ve seen not only breakthrough approaches to care, but also significant improvement upon existing novel treatments and exploring combinations within those medicines.1 These advances have transformed expectations of what a blood cancer diagnosis now means for patients. While we’ve come a long way, I believe the most exciting scientific discovery is yet to come, and that future advances will truly transform patient care.
Angie You and Volker Schellenberger, Amunix
Sanofi is crashing the year-end M&A party with a deal of its own.
Immuno-oncology is the name of the game as it swallows Mountain View, CA-based Amunix for $1 billion upfront and up to $225 million in biobucks, tagging a suite of T cell engagers and cytokine therapies as well as a tech platform for making ‘conditionally activated biologics.’
‘The Amunix technology platform utilizes a next generation smart biologics approach to precisely tailor-deliver medicines to become active only in tumor tissues while sparing normal tissues,’ said Sanofi R&D chief John Reed, ‘thus bringing the promise of more effective and safer treatment options for cancer patients.’
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Khurem Farooq, Gyroscope CEO
Christmas is coming early for Gyroscope.
In its latest gene therapy gambit, Novartis is paying $800 million upfront to acquire the Syncona-backed biotech, with another $700 million reserved for milestones.
Novartis has been diving deep into retinal disorders, and Gyroscope’s lead candidate adds a potential one-time treatment for geographic atrophy — a leading cause of blindness — to the pipeline.
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Christophe Weber (Miho Takahashi/The Yomiuri Shimbun via AP Images)
Takeda CEO Christophe Weber thought he had a win in the bag for TAK-721 — one of the experimental drugs spotlighted in the company’s $62 billion Shire acquisition — and went so far as to announce a brand name after snagging priority review last year. But months after missing its PDUFA date, the FDA’s now saying better luck next time.
Regulators handed TAK-721 a complete response letter for the treatment of eosinophilic esophagitis (EoE), a chronic inflammatory disease of the esophagus, Takeda revealed on Tuesday. While the pharma company didn’t share much information on the FDA’s reasoning behind the rejection, execs shared that the agency has recommended an additional clinical study ‘in order to help resolve FDA feedback.’
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Alzheimer’s disease researchers along with medical professors from Harvard and Johns Hopkins issued a formal statement Monday asking the FDA to quickly pull Biogen’s Aduhelm from the market.
‘An accelerated withdrawal would mitigate some of the harm of its unwarranted accelerated approval,’ they wrote to FDA, explaining how Aduhelm ‘did not meet the FDA’s own criteria for accelerated approval based on surrogate markers because amyloid plaque does not correlate well with symptoms, severity of disease or progression.’
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As the FDA is poised to authorize the new Pfizer and Merck pills to treat those with Covid-19 who haven’t been hospitalized, Bloomberg reports that the US will only have limited supplies of each pill initially.
US officials said Americans should have nearly 400,000 courses of Merck’s pill available upon its authorization and 65,000 courses of Pfizer’s pill. By the end of January, the government expects 3 million Merck courses — its entire order — and 250,000 Pfizer courses. Merck’s pill has been shown to be less effective in early trials than Pfizer’s, although Merck did not test its pill head-to-head against Pfizer.
Graphic: Alexander Lefterov for Endpoints News
Drug pricing reform has been a political football for years, with both Donald Trump and Joe Biden championing changes during their presidencies. Little has moved the needle on Capitol Hill, however, thanks in part to the drug industry’s powerful lobbyists.
In the most recent example, Democrats tried to allow Medicare to negotiate drug prices — an immediate non-starter for biopharma proponents. After months of negotiation, the measure fell apart in favor of provisions on a small subset of drugs that passed the House but marked a far cry from Biden’s promises and what many activists had hoped for. The bill, included as part of Biden’s broad social policy agenda, now appears dead after Democrats failed to secure 50 votes in the Senate.
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Right as the new Omicron variant is poised to increase rapidly across the US, the federal government has effectively run out of the only monoclonal antibody treatment that works against it, and at least one major hospital system is now halting all mAb infusions.
Late last month, the federal government paused shipments of GlaxoSmithKline and Vir’s mAb treatment sotrovimab in order to conserve supplies of the only treatment that might work against the Omicron variant. Last week, however, HHS told Endpoints News that the move to hold back sotrovimab was unrelated to Omicron, and due to a surplus of Eli Lilly mAbs, which aren’t effective against Omicron.
Another bad week for Biogen and its Tokyo-based partners at Eisai was extended on Wednesday with news that a panel review of their controversial Alzheimer’s drug aducanumab earned a pushback from the health ministry in Japan.
According to overnight news reports, their panel concluded that inconsistent Phase III data and lack of clinical significance in reducing amyloid plaque in patients made it difficult to determine if the therapy worked, but offered to review it again once the 2 partners lined up more data.
https://endpts.com/breaking-fda-authorizes-the-first-at-home-pills-from-pfizer-to-treat-covid-19/