January 24, 20254 min readTrump Abruptly Cancels Crucial Science Reviews at NIH, Worlds Largest Public Funder of Biomedical ResearchPresident Trump has placed an indefinite suspension on research grant reviews and travel at the National Institutes of Health and appears to have erased diversity programming pages at the agencys websiteBy Max Kozlov & Nature magazine A vaccine research centre on the campus of the National Institutes of Health in Bethesda, Maryland. Grandbrothers/Alamy Stock PhotoConfusion and anxiety is rippling through the US health-research community this week following Donald Trump taking office as the 47th US president. His administration has abruptly cancelled research-grant reviews, travel and trainings for scientists inside and outside the National Institutes of Health (NIH), the worlds largest public biomedical funder. Adding to the worry: the Trump team appears to have deleted entire webpages about diversity programmes and diversity-related grants from the agencys site.The cancelling of meetings and travel is part of a pause in external communications issued on 21 January by the NIHs parent organization, the US Department of Health and Human Services (HHS). Researchers who spoke to Nature say that although a short, daylong pause in communications at US agencies has occurred in the past when new administrations have started, to reorient strategy, the reach and length of the Trump teams it is set to last until at least 1 February is unprecedented. Without advisory-committee meetings, the NIH cannot issue research grants, temporarily freezing 80% of the agencys US$47-billion budget that funds research across the country and beyond.Ive never seen anything like this before, says Carole LaBonne, a developmental biologist at Northwestern University in Evanston, Illinois, who has received funding from the agency for more than 20 years. The uncertainty caused by the pause will be devastating for the scientific community, particularly for early-career researchers, LaBonne adds.On supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.The pause includes mass communications and public appearances that are not directly related to emergencies or critical to preserving health, according to an NIH spokesperson. This is a short pause to allow the new team to set up a process for review and prioritization.NIH and HHS spokespeople did not respond to queries about whether grant-review panels were considered public appearances and why they were cancelled, or about concerns from researchers that the pause will hinder the agencys mission.A mission under threat?Typically, the NIH awards research grants after two separate panels of independent specialists in a particular scientific field have reviewed project proposals. On Wednesday, reports emerged on the social-media platforms X and Bluesky that grant-review panels scheduled prior to 2 February had been cancelled without any indication of when they would be rescheduled.These panels, called study sections and advisory councils, are sometimes scheduled a year in advance and can include more than 30 participating researchers, so it will take time to reschedule and might result in a domino effect of cancellations. Researchers awaiting a grant-review decision may be laid off or forced to seek employment elsewhere if funding is uncertain or delayed, LaBonne says. Early-career researchers are particularly at risk, as it can mean missing research milestones and jeopardize hiring, promotion and tenure decisions, she adds.Harold Varmus, a former NIH director who is now a cancer researcher at Weill Cornell Medicine in New York City, says that putting a hold on communications of new policies when theres a new presidential administration can make sense. But the extensive remit of the current pause is counter to the agencys mission, he says. The US Congress allocates budget money to the NIH for funding research, he adds, so the will of Congress will be challenged if we dont change what is going on.Esther Choo, an emergency-medicine physician at the Oregon Health & Science University in Portland, wrote on Bluesky on 22 January that a study section she was supposed to participate in was cancelled this week. As a reviewer on grant proposals, she said, you constantly read ideas for research projects that could be a game changer in health. She added: I hope we get back on track soon. There are real people, real lives waiting on the science.The communications pause also includes the NIHs sibling agencies, including the US Centers for Disease Control and Prevention (CDC), which helps to protect the health of people in the United States. Today, the CDC did not publish its weekly digest on disease statistics and research, called the Morbidity and Mortality Weekly Report, that scientists and health practitioners around the world rely on the first time in the digests 60-year history. Three reports about the emerging H5N1 avian-flu outbreak were supposed to be published in this weeks edition, according to The Washington Post.Diversity goalsAdding to the uncertainty among researchers, the Trump administration also seems to have erased all materials relating to structural racism and diversity from the NIH website. The NIH has been criticized by the research community over the years for a lack of racial and ethnic diversity in those who win grants from the agency critiques that are warranted and urgent as the United States and its scientists become more diverse, Varmus says.These deletions are likely the result of Trumps Day 1 executive order to end what he calls radical and wasteful government diversity programmes and to suspend the employment of anyone working in those roles.Now missing from the NIH website is application information regarding grants called diversity supplements, which provide early-career researchers with up to $125,000 and a maximum of five years of training and mentorship opportunities. Also gone are materials from the agencys Office of Diversity, Equity and Inclusion and an agency-wide initiative called UNITE that aimed to tackle structural racism in the biomedical workforce.The community has struggled to diversify the scientific workforce theres only been modest progress, LaBonne says. And now its been erased with the stroke of a pen.This article is reproduced with permission and was first published on January 23, 2025.