Macchiarini Retracts Another Paper

The embattled thoracic surgeon blames his former employer, the Karolinska Institute, for losing data related to the retracted research.

Written byBob Grant
| 2 min read

Register for free to listen to this article
Listen with Speechify
0:00
2:00
Share

YOUTUBE, ANNEWSPaolo Macchiarini, the thoracic surgeon and artificial organ researcher beset by allegations of misconduct, has assented to retracting another paper from the scientific literature. This time, it’s a 2014 Nature Communications article reporting the results of experiments in which Macchiarini and colleagues transplanted artificial esophagi into rats. The journal published an editorial expression of concern regarding the paper last year.

As Retraction Watch reported, the Karolinska Institute (KI), which employed Macchiarini when the research was conducted, asked that the paper be retracted after finding four of its coauthors guilty of research misconduct. All of those authors, including Macchiarini, agreed with the retraction.

But when asked by Retraction Watch why he consented to the retraction, Macchiarini cited the letter he sent to the editors of Nature Communications regarding the situation. “Given the pressure on you created by KI’s decision to cast us as guilty of scientific misconduct, I can see that retraction is possibly the only option available to you,” he wrote. “. . . The fact that Karolinska Institutet lost some of the animal house records when moving the facility, including some of the original ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to more than 35 years of archives, as well as TS Digest, digital editions of The Scientist, feature stories, and much more!
Already a member? Login Here

Related Topics

Meet the Author

  • From 2017 to 2022, Bob Grant was Editor in Chief of The Scientist, where he started in 2007 as a Staff Writer. Before joining the team, he worked as a reporter at Audubon and earned a master’s degree in science journalism from New York University. In his previous life, he pursued a career in science, getting a bachelor’s degree in wildlife biology from Montana State University and a master’s degree in marine biology from the College of Charleston in South Carolina. Bob edited Reading Frames and other sections of the magazine.

    View Full Profile
Share
February 2026

A Stubborn Gene, a Failed Experiment, and a New Path

When experiments refuse to cooperate, you try again and again. For Rafael Najmanovich, the setbacks ultimately pushed him in a new direction.

View this Issue
Human-Relevant In Vitro Models Enable Predictive Drug Discovery

Advancing Drug Discovery with Complex Human In Vitro Models

Stemcell Technologies
Redefining Immunology Through Advanced Technologies

Redefining Immunology Through Advanced Technologies

Ensuring Regulatory Compliance in AAV Manufacturing with Analytical Ultracentrifugation

Ensuring Regulatory Compliance in AAV Manufacturing with Analytical Ultracentrifugation

Beckman Coulter Logo
Conceptual multicolored vector image of cancer research, depicting various biomedical approaches to cancer therapy

Maximizing Cancer Research Model Systems

bioxcell

Products

Sino Biological Logo

Sino Biological Pioneers Life Sciences Innovation with High-Quality Bioreagents on Inside Business Today with Bill and Guiliana Rancic

Sino Biological Logo

Sino Biological Expands Research Reagent Portfolio to Support Global Nipah Virus Vaccine and Diagnostic Development

Beckman Coulter

Beckman Coulter Life Sciences Partners with Automata to Accelerate AI-Ready Laboratory Automation

Refeyn logo

Refeyn named in the Sunday Times 100 Tech list of the UK’s fastest-growing technology companies