Man who got pig heart transplant dies after 2 months

In a medical first, US surgeons transplant pig heart into human — This handout photo released by the University of Maryland School of Medicine on January 10, 2022 shows surgeon Dr Bartley Griffith (L) with patient David Bennett, Sr., who received a heart implant from a genetically modified pig, in Baltimore, Maryland, in January 2022. (R) Surgeons performing the transplant in Baltimore, Maryland, on January 7, 2022. Photo: UNIVERSITY OF MARYLAND SCHOOL OF MEDICINE/AFP

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The first person to receive a heart transplant from a pig has died, two months after the groundbreaking experiment, the Maryland hospital that performed the surgery announced recently.

David Bennett, 57, died Tuesday at the University of Maryland Medical Center. Doctors didn’t give an exact cause of death, saying only that his condition had begun deteriorating several days earlier.

Bennett’s son praised the hospital for offering the last-ditch experiment, saying the family hoped it would help further efforts to end the organ shortage.

“We are grateful for every innovative moment, every crazy dream, every sleepless night that went into this historic effort,” David Bennett Jr. said in a statement released by the University Of Maryland School Of Medicine. “We hope this story can be the beginning of hope and not the end.”

Doctors for decades have sought to one day use animal organs for life-saving transplants. Bennett, a handyman from Hagerstown, Maryland, was a candidate for this newest attempt only because he otherwise faced certain death — ineligible for a human heart transplant, bedridden and on life support, and out of other options.

After the Jan. 7 operation, Bennett’s son told The Associated Press his father knew there was no guarantee it would work.

Prior attempts at such transplants — or xenotransplantation — have failed largely because patients’ bodies rapidly rejected the animal organ. This time, the Maryland surgeons used a heart from a gene-edited pig: Scientists had modified the animal to remove pig genes that trigger the hyper-fast rejection and add human genes to help the body accept the organ.

At first the pig heart was functioning, and the Maryland hospital issued periodic updates that Bennett seemed to be slowly recovering. Last month, the hospital released a video of him watching the Super Bowl from his hospital bed while working with his physical therapist.

Bennett survived significantly longer with the gene-edited pig heart than one of the last milestones in xenotransplantation — when Baby Fae, a dying California infant, lived 21 days with a baboon’s heart in 1984.

“We are devastated by the loss of Mr. Bennett. He proved to be a brave and noble patient who fought all the way to the end,” Dr. Bartley Griffith, who performed the surgery at the Baltimore hospital, said in a statement.

Other transplant experts praised the Maryland team’s landmark research and said Bennett’s death shouldn’t slow the push to figure out how to use animal organs to save human lives.