US Surgeons Transplant Pig Heart Into Human Patient

In a medical first, medical doctors transplanted a pig coronary heart right into a affected person in a last-ditch effort to avoid wasting his life and a Maryland hospital stated Monday that he’s doing properly three days after the extremely experimental surgical procedure.

While it’s too quickly to know if the operation actually will work, it marks a step within the decades-long quest to at some point use animal organs for life-saving transplants. Doctors on the University of Maryland Medical Center say the transplant confirmed {that a} coronary heart from a genetically modified animal can perform within the human physique with out instant rejection.

The affected person, David Bennett, 57, knew there was no assure the experiment would work however he was dying, ineligible for a human coronary heart transplant and had no different choice, his son advised The Associated Press.

“It was either die or do this transplant. I want to live. I know it’s a shot in the dark, but it’s my last choice,” Bennett stated a day earlier than the surgical procedure, in keeping with an announcement offered by the University of Maryland School of Medicine.

There’s an enormous scarcity of human organs donated for transplant, driving scientists to strive to determine how one can use animal organs as a substitute. Last 12 months, there have been simply over 3,800 coronary heart transplants within the U.S., a file quantity, in keeping with the United Network for Organ Sharing, which oversees the nation’s transplant system.

“If this works, there will be an endless supply of these organs for patients who are suffering,” stated Dr. Muhammad Mohiuddin, scientific director of the college’s animal-to-human transplant program.

But prior makes an attempt at such transplants ― or xenotransplantation ― have failed, largely as a result of sufferers’ our bodies quickly rejected the animal organ. Notably, in 1984, Baby Fae, a dying toddler, lived 21 days with a baboon coronary heart.

The distinction this time: The Maryland surgeons used a coronary heart from a pig that had undergone gene-editing to take away a sugar in its cells that’s answerable for that hyper-fast organ rejection.

“I think you can characterize it as a watershed event,” Dr. David Klassen, UNOS’ chief medical officer, stated of the Maryland transplant.

Still, Klassen cautioned that it’s solely a primary tentative step into exploring whether or not this time round, xenotransplantation would possibly lastly work.

The Food and Drug Administration, which oversees xenotransplantation experiments, allowed the surgical procedure below what’s referred to as a “compassionate use” emergency authorization, obtainable when a affected person with a life-threatening situation has no different choices.

Just final September, researchers in New York carried out an experiment suggesting these sorts of pigs would possibly supply promise for animal-to-human transplants. Doctors quickly connected a pig’s kidney to a deceased human physique and watched it start to work.

The Maryland transplant takes their experiment to the subsequent stage, stated Dr. Robert Montgomery, who led that experiment at NYU Langone Health.

In this photo provided by the University of Maryland School of Medicine, members of the surgical team show the pig heart for transplant into patient David Bennett in Baltimore on Friday, Jan. 7, 2022. On Monday, Jan. 10, 2022 the hospital said that he's doing well three days after the highly experimental surgery. (Mark Teske/University of Maryland School of Medicine via AP)
In this picture offered by the University of Maryland School of Medicine, members of the surgical group present the pig coronary heart for transplant into affected person David Bennett in Baltimore on Friday, Jan. 7, 2022. On Monday, Jan. 10, 2022 the hospital stated that he is doing properly three days after the extremely experimental surgical procedure. (Mark Teske/University of Maryland School of Medicine through AP)

through Associated Press

“This is a truly remarkable breakthrough,” he stated in an announcement. “As a heart transplant recipient, myself with a genetic heart disorder, I am thrilled by this news and the hope it gives to my family and other patients who will eventually be saved by this breakthrough.”

It shall be essential to share the information gathered from this transplant earlier than opening the choice to extra sufferers, stated Karen Maschke, a analysis scholar on the Hastings Center, who helps develop ethics and coverage suggestions for the primary medical trials below a grant from the National Institutes of Health.

“Rushing into animal-to-human transplants without this information would not be advisable,” Maschke stated.

The surgical procedure final Friday took seven hours on the Baltimore hospital.

“He realizes the magnitude of what was done and he really realizes the importance of it,” David Bennett Jr. stated of his father. “He could not live, or he could last a day, or he could last a couple of days. I mean, we’re in the unknown at this point.”

AP Medical Writer Lauran Neergaard contributed.

The Associated Press Health and Science Department receives help from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely answerable for all content material.


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