Expression of concern: Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: a multinational registry analysis
Important scientific questions have been raised about data reported in the paper by Mandeep Mehra et al—Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: a multinational registry analysis1
—published in The Lancet on May 22, 2020. Although an independent audit of the provenance and validity of the data has been commissioned by the authors not affiliated with Surgisphere and is ongoing, with results expected very shortly, we are issuing an Expression of Concern to alert readers to the fact that serious scientific questions have been brought to our attention. We will update this notice as soon as we have further information.
https://www.thelancet.com/journals/l...290-3/fulltext
Expression of Concern: Mehra MR et al. Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19. N Engl J Med. DOI: 10.1056/NEJMoa2007621.
On May 1, 2020, we published “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19,”1 a study of the effect of preexisting treatment with angiotensin-converting enzyme (ACE) inhibitors and angiotensin-receptor blockers (ARBs) on Covid-19. This retrospective study used data drawn from an international database that included electronic health records from 169 hospitals on three continents. Recently, substantive concerns have been raised about the quality of the information in that database. We have asked the authors to provide evidence that the data are reliable. In the interim and for the benefit of our readers, we are publishing this Expression of Concern about the reliability of their conclusions.
Studies of ACE inhibitors and ARBs in Covid-19 can play an important role in patient care. We encourage readers to consult two other studies we published on May 1, 2020, that used independent data to reach their conclusions.2
https://www.nejm.org/doi/full/10.1056/NEJMe2020822
A mysterious company’s coronavirus papers in top medical journals may be unraveling
https://www.sciencemag.org/news/2020...-be-unraveling