Peter Marks, the highest Meals and Drug Administration official who oversaw vaccines, gene therapies, and the blood provide, resigned Friday after being advised by Trump administration officers he could be fired if he didn’t step down, in line with folks conversant in the state of affairs.
In his resignation letter, which was obtained by STAT, Marks mentioned that he had tried to reply the considerations of Well being and Human Providers Secretary Robert F. Kennedy Jr., relating to the protection of widespread childhood vaccinations.
“As you might be conscious, I used to be prepared to work to handle the Secretary’s considerations relating to vaccine security and transparency by listening to from the general public and implementing quite a lot of totally different public conferences and engagements with the Nationwide Academy of Sciences, Engineering, and Drugs,” Marks wrote. “Nevertheless, it has turn out to be clear that fact and transparency should not desired by the Secretary, however fairly he needs subservient affirmation of his misinformation and lies.”
The information was first reported by The Wall Avenue Journal.
Former FDA commissioners, in addition to specialists in public well being, oncology, and the apply of medical analysis immediately criticized the transfer.
“His letter raises uniquely severe considerations for the group who care in regards to the well being of our folks,” mentioned Robert Califf, who served as FDA commissioner underneath two presidents. “I hope the biomedical group will communicate with conviction. I don’t use the phrase uniquely frivolously. This can be a level in American historical past that’s really distinctive.”
Scott Gottlieb, who served as FDA commissioner throughout the first Trump Administration, advised the Washington Submit that Marks deserved explicit credit score for his work in regulating gene remedy.

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“Peter has presided over a unprecedented interval of medical progress, spearheading breakthroughs in cell and gene remedy that helped rework the therapy of pediatric leukemia, sickle cell illness, and sure types of blindness,” Gottlieb mentioned.
The general public’s speedy concern is not going to be Marks’ lengthy work in gene remedy, however the questions he raised in his resignation letter in regards to the integrity of the U.S. course of for regulating vaccines.
Within the month and a half since he was sworn in as HHS secretary, Kennedy has moved swiftly to enact his anti-vaccine agenda. A gathering of the Facilities for Illness Management and Prevention’s knowledgeable vaccine panel, the Advisory Committee on Immunization Practices, was postponed and a gathering of the FDA’s vaccine advisers, the Vaccines and Associated Organic Merchandise Advisory Committee, was canceled.
Kennedy demanded {that a} new examine searching for a hyperlink between vaccines and autism be performed, work CDC scientists initially thought they have been to conduct. However the company was as a substitute advised to share the uncooked knowledge of 4 beforehand printed research with HHS. A stalwart of the anti-vaccine motion, David Geier, has been employed as a “senior knowledge analyst” working within the workplace of the secretary. Geier, who has solely a bachelor’s diploma, was as soon as disciplined for practising medication with out a license.
And on Thursday, Kennedy introduced in an interview on Information Nation that he was creating an company inside the CDC to review vaccine accidents.
In his resignation letter, Marks raised considerations in regards to the burgeoning measles outbreaks within the nation, which have already claimed two lives. The CDC reported Friday that there have been almost 500 confirmed instances to this point in 19 states; specialists imagine many dad and mom should not looking for assessments for contaminated kids and the precise determine could also be significantly increased.
In regular instances, measles outbreaks set off robust and frequent calls from public well being leaders for folks of unvaccinated kids to get their kids inoculated. However Kennedy, who believes there’s a hyperlink between vaccinations and autism, regardless of mountains of proof disproving the declare, has solely mentioned that vaccination is a private alternative. Relatively than urging dad and mom to assist their kids keep away from an infection, he has emphasised questionable approaches to treating kids whereas they’re in poor health; some dad and mom have given such excessive doses of the vitamin A that Kennedy espouses to forestall measles that their kids have incurred liver harm.
“Undermining confidence in well-established vaccines which have met the excessive requirements for high quality, security, and effectiveness which were in place for many years at FDA is irresponsible, detrimental to public well being, and a transparent hazard to our nation’s well being, security. and safety,” Marks wrote in his resignation letter.
Some well being leaders known as for an investigation into Marks’ departure. Richard Pan, a pediatrician and former California state senator who pushed for tighter guidelines on vaccine exemptions after a 2014 measles outbreak within the state, advised STAT he thought physicians in Congress ought to demand that Kennedy and new FDA Commissioner Marty Makary testify on why Marks was compelled out.

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Jesse Goodman, who beforehand served within the function at FDA that Marks held advised STAT: “I fear that his loss to FDA, and, extra usually, meddling with the US authorities’s most proficient scientific leaders and employees, will gradual the supply of latest cures, harm our economic system, put public security in danger, and discourage scientists from careers in public service the place they’re so wanted.” Goodman is at the moment the director of the Heart on Medical Product Entry, Security and Stewardship at Georgetown College.
Marks was one of many architects of Operation Warp Velocity, the $18 billion U.S. effort to hurry improvement of Covid-19 vaccines. The endeavor was one of many signature accomplishments of the primary Trump administration, resulting in the deployment of two vaccines inside a mere 11 months of the publication of the primary genetic sequence of the brand new virus.
John Crowley, president and CEO of the Biotechnology Innovation Group, mentioned in a press release Saturday that the group was “deeply involved that the lack of skilled management on the FDA will erode scientific requirements and broadly affect the event of latest, transformative therapies to struggle illnesses for the American folks.” The assertion from the biotechnology business’s largest commerce group added that it’s dedicated to working with the brand new commissioner and the administration to “help and allow a strengthened and modernized FDA.”
John Maraganore, a enterprise capitalist who was the longtime CEO of Alnylam Prescription drugs mentioned he was disillusioned to see Peter “pushed out for not towing the road with RFK and his anti-vaccine agenda.” He added: “That’s deeply regarding for my part. These assaults on science want to come back to an finish. They’re not good for the American public, they’re not good for Trump. I hope all of them come to an finish.”
In an interview with STAT shortly earlier than the election, Marks made clear his views that vaccines have been protected, rigorously examined, and crucial to make sure public well being. “There is no such thing as a skimping on security within the vaccine world,” he mentioned.
In November, shortly after President Trump was elected, Marks spoke at a well being care convention in London and mentioned he thought the scientific group must make the case for the worth of vaccines to the incoming anti-vaccine administration, however mentioned, “I’ve to imagine that a point of moderation will prevail.”
He mentioned he knew there was dialogue to come back however mentioned, “My hope is that by an open dialogue, we are going to get to the correct place.”
He made it clear he hoped to maintain his job, saying: “I’ll keep round so long as I’m thought-about to be welcome to remain round.” That turned out to be simply over two months.
The resignation was met with disappointment by researchers engaged on new most cancers immunotherapies comparable to CAR T-cell remedy. “That is so extremely unhappy for most cancers and particularly cell and gene remedy,” Krishna Komanduri, physician-in-chief on the Helen Diller Complete Most cancers on the College of California, San Francisco, posted on Bluesky in response to Marks’ departure. “CAR-T therapies wouldn’t be the place they’re with out his efforts.”
Bob Kocher, a enterprise capitalist at Venrock who labored within the Obama White Home, described Marks as a hero. “His work throughout Covid saved 1000’s of lives getting mRNA vaccines to market shortly and safely. He is a good scientist, inspirational chief, and public servant who has devoted his profession to serving to others,” Kocher advised STAT.

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Eric Topol, chair of the division of translational medication at Scripps Analysis was blunt: “An enormous loss for FDA,” he posted on Bluesky shortly after the information broke.
Even some conservatives have been involved about Marks’ resignation. Peter Pitts, a former FDA affiliate commissioner underneath President George W. Bush, advised STAT: “Peter Marks was prepared to work with the brand new Administration — however there was no urge for food on the a part of Mr. Kennedy to comply with disagree. Dangerous resolution. Get your vaccinations and maintain on to your rules.”
Ashish Jha, dean of the college of public well being at Brown College and Biden’s Covid czar, considers Marks “one of the vital good, devoted scientists and public servants,” he mentioned in a publish on X. “This isn’t,” he mentioned, “how we make America wholesome.”
Adam Feuerstein contributed reporting to this text.