The New England Journal of Medicine issued an "expression of concern" Tuesday on a study it published May 1 that suggested widely used blood pressure medicines were not raising the risk of death for people with COVID-19.
The same database by the Chicago company Surgisphere Corp., was used in an observational study of nearly 100,000 patients published in Lancet that tied the malaria drugs hydroxychloroquine and chloroquine to a higher risk of death in hospitalized patients with the virus.
Lancet issued a similar expression of concern about its study on Tuesday, saying it was aware “important scientific questions†had been raised.
“I had accepted the Lancet paper on its face" because the journal and lead author are highly regarded, and because the results are consistent with prior research — 13 studies have found no benefit from hydroxychloroquine for coronavirus, Topol said
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