A scientific journal published by Elsevier has reportedly posted a stunning 101 expressions of concern on studies connected to Didier Raoult, a disgraced French microbiologist who gained international prominence amid the pandemic by promoting, with little evidence, that the malaria drug hydroxychloroquine could treat COVID-19—a claim that has now been firmly debunked.
According to Retraction Watch, the journal New Microbes and New Infections posted 101 expressions of concern on Raoult’s works recently, including a 2023 study that drew sharp criticism. The study involved giving hydroxychloroquine to tens of thousands of COVID-19 patients after data indicated that it wasn’t effective and the French government rescinded permission for its use against COVID-19. An op-ed in the major French newspaper Le Monde described the study as “the largest ‘wild’ therapeutic trial known to date.”
The expressions of concern also come as Raoult saw his tenth study retracted, Retraction Watch noted.
While Raoult’s unfounded claims about hydroxychloroquine drew initial attention to his COVID-19-related work—with critics quickly noting flaws and weaknesses in his studies—his high-profile claims led critics and sleuths to dive deeper into his extensive publication record. There, they claim they found evidence of long-standing and egregious ethics violations, which were recently laid out in an investigative report by Science Magazine.
Essentially, critics claim Raoult and the institute that he led until 2021, the Hospital Institute of Marseille Mediterranean Infection (IHU), conducted hundreds of studies on humans without appropriate ethical approval or oversight or adequate consent from all participants, the Science investigation found. The IHU work spanned a wide variety of research topics, which involved collecting a variety of biological samples from patients, including vaginal swabs, feces, blood, urine, and breast milk.
However, critics noted 248 IHU studies that reused the same ethical approval code, “09-022,” despite being very different studies that included different kinds of sampling. The critics claim that the studies required separate ethical approvals and additional oversight. They also found that at least 17 studies relied on vulnerable populations, including refugees and people living in homeless shelters, raising serious questions about consent. Some of the studies were also conducted in African countries, where evidence of local ethical approval was either absent or incomplete.
Raoult told the magazine that his research groups had the appropriate ethical approval and said that his critics, whom he described as stalkers and cyber harassers, did not understand how French biomedical laws work.
In Elsevier’s expressions of concern and a linked “Publisher’s Note” from November, the publisher said that the concern was over “the articles’ adherence to Elsevier’s publishing ethics policies and the appropriate conduct of research involving human participants.” Elsevier is still investigating the matter but indicated that the expressions of concern are added “if it is deemed that there is a particular need to alert readers to serious concerns while [the] investigation is ongoing.”
Raoult has had nearly 50 studies likewise flagged over ethical concerns in PLOS journals, Retraction Watch noted. The latest of his studies to be retracted was in the journal Scientific Reports, with the editors there also stating it was due to a lack of ethical oversight. “The paper cites approval from an institutional ethics committee in France, but samples used in this study were also sourced from Algeria, Saudi Arabia, and Niger,” the retraction notice says. “The Authors were not able to provide documentation of approval from ethics committees in these countries or of compliance with local regulations regarding the use of such samples in research.”
Raoult is currently under criminal investigation in France.
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