US government stops distribution of Eli Lilly Covid-19 antibody treatment due to spread of coronavirus variants

US government stops distribution of Eli Lilly Covid-19
antibody treatment due to spread of coronavirus variants 1
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The government stopped distributing the treatment on Tuesday.
Last week, the US Food and Drug Administration updated guidance to say the therapy on its own may not work as well against variants. FDA Acting Commissioner Janet Woodcock had said that the US had stopped shipping bamlanivimab to Arizona, California and Nevada due to the variants, and the FDA asked the companies to assess their therapies against the variants.
Bamlanivimab can still be used with etesevimab, another monoclonal antibody treatment developed by Eli Lilly. In combination, the two Eli Lilly treatments seem to work against coronavirus variants.
Operation Warp Speed invested heavily in the treatment throughout its development, and in December, the US government spent $812.5 million to buy 650,000 additional doses of bamlanivimab. The government has sent out nearly 800,000 doses of bamlanivimab as of March 2. The updated guidance says that if health care providers want to use their existing supply of bamlanivimab, they can.
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“We recognize the U.S. government has made the decision to no longer allow direct ordering of bamlanivimab alone due to concerns about the prevalence of the California (B.1.427/B.1.429) and New York (B.1.526) variants of SARS-CoV-2,” Eli Lilly said in a statement Thursday; last week, the US Centers for Disease Control and Prevention said the California strains are officially “variants of concern,” as they may be more transmissible and Covid-19 treatments may be less effective against them.
“The U.S. government has enabled direct ordering of bamlanivimab and etesevimab together as well as etesevimab alone, to pair with bamlanivimab that sites of care have on hand,” Lilly said in the statement. “We believe that sites with access to bamlanivimab and etesevimab for administration together should use that therapy over bamlanivimab alone. We remain committed to ensuring patients who need access to neutralizing antibody therapy can get it.”
Clinical trials have shown that etesevimab and bamlanivimab combination treatment and an antibody therapy made by Regeneron seem to significantly reduce hospitalization and deaths among Covid-19 patients who are treated early in the course of their disease. Regeneron’s antibody cocktail also seems to work against variants in circulation in the US.
In May, Dan Skovronsky, Lilly’s senior vice president and chief science officer told CNN that even early on, it was investigating several antibodies for additional versions of its Covid-19 treatments.
Eli Lilly went with the single antibody approach in its first treatment because the one antibody seemed potent enough. When a treatment requires more antibodies mixed together at higher doses, “the more difficult it is to manufacturer” Skovronsky said; at the time, there wouldn’t have been enough capacity to make all the doses needed.
“The optimal scenario was one antibody at a relatively low dose, but if it has to be two antibodies, higher doses or even three antibodies mixed together at higher doses, we’ll do whatever it takes to make effective medicine for patients,” Skovronsky said in May.
Lilly is currently working with Amgen to scale up the manufacturing of etesevimab.

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