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How a pig’s kidney gave a N.H. man his life again


Tim Andrews leans again in a chair and pulls up the underside of his t-shirt, revealing a pale pink scar on the correct facet of his stomach. Beneath it sits the kidney of a genetically modified pig that surgeons transplanted into his physique six weeks in the past.

Dr. Leonardo Riella squirts a chilly gel on Andrews’ stomach, and presses an ultrasound wand into his pores and skin to verify how the kidney is performing. Just a few bursts of pink seem on the display.

“That’s the blood move within the kidney,” Riella says. “It’s nice.”

Dr. Leonardo Riella makes use of ultrasound to view Tim Andrews’ transplanted pig kidney throughout a post-surgery checkup. (Jesse Costa/WBUR)

The pictures counsel the kidney is working. Andrews’ important indicators look good, too. His clean restoration is a supply of hope to sufferers with kidney illness who face lengthy waits for organ transplants. Many die on dialysis remedy every year earlier than they get the possibility at surgical procedure.

Andrews is the second affected person at Massachusetts Common Hospital to endure this experimental process, and certainly one of solely two folks on this planet at present strolling round with an organ that got here from a pig. Medical doctors hope this process — generally known as a xenotransplant — quickly will probably be obtainable to many extra sufferers.

Dr. Leonardo Riella shows pig kidney recipient Tim Andrews the pig socks he is wearing at the start of Andrews' checkup at Mass General in Boston. (Jesse Costa/WBUR)
Dr. Leonardo Riella exhibits pig kidney recipient Tim Andrews the pig socks he’s sporting at first of Andrews’ checkup at Mass Common in Boston. (Jesse Costa/WBUR)

Andrews is amazed at how a lot better he feels. As an alternative of utilizing a wheelchair, he’s strolling on his personal once more. And he’s smiling.

“I’ve power!” he says. “I am unable to even imagine the power I’ve. It was like I turned from 66 to 40.”


Earlier than illness slowed him down, Andrews lived an lively life. He labored in supermarkets for 3 many years, and later as an aide to dementia sufferers. He loved fishing, searching and faucet dancing.

Two years in the past, Andrews was identified with end-stage kidney illness and started dialysis. The remedy stored him alive however made him depressing: too drained to stroll, too nauseous to get pleasure from meals.

“I didn’t wish to eat, I used to be throwing up,” Andrews stated. “All types of unhealthy stuff.”

What he actually wanted was a kidney transplant. However the watch for a human kidney was seven years. Andrews needed to grapple with a stark actuality.

“That is it,” he recollects considering. “I’m going to get weaker and weaker and weaker, after which I’m going to die.”

He was able to strive absolutely anything to regain some energy and spend extra time together with his grandchildren. An internet search led him to Mass Common’s work within the subject of pig-to-human organ transplants.

MGH nephrologist Leonardo Riella and surgeon Tatsuo Kawai talk with reporters about Massachusetts General Hospital's second transplant of a genetically edited pig kidney into a living human recipient. (Robin Lubbock/WBUR)
MGH nephrologist Leonardo Riella and surgeon Tatsuo Kawai speak with reporters about Massachusetts Common Hospital’s second transplant of a genetically edited pig kidney right into a residing human recipient. (Robin Lubbock/WBUR)

Final March, surgeons at Mass Common carried out the first-ever pig kidney transplant in a residing human, 62-year-old Richard Slayman of Weymouth. Slayman’s restoration started nicely, however he died of coronary heart issues lower than two months later.

Nonetheless, Andrews needed to provide it a strive. He reasoned that even when the surgical procedure didn’t assist him, it might advance the analysis and assist others with kidney illness.

“There’s so many individuals on the market on dialysis, and so lots of them are going to die earlier than they also have a option to get a human kidney,” Andrews stated. “So for them, I used to be like, ‘Let’s simply do it.’

“If I die they usually study one thing, so be it.”

His spouse, Karen Andrews, was extra hesitant. “I assumed, ‘Oh boy, I do not know. We have to discuss this extra.’ However he was simply so enthusiastic about it,” she stated.

Her husband satisfied her and his medical doctors that he was prepared. He began exercising on the gymnasium and misplaced weight to organize for the operation.


A Cambridge-based biotech firm referred to as eGenesis has been experimenting with Yucatan minipigs, modifying their genetic make-up to make their organs safer and extra appropriate with people.

On Jan. 25, surgeons from Mass Common drove to a facility an hour away to acquire a kidney from a kind of genetically modified pigs. They introduced it again to the hospital on ice, and through a two-and-a-half-hour surgical procedure, connected it to the blood vessels inside Andrews’ stomach.

Inside two minutes, the kidney began making urine, identical to a wholesome human organ.

The pig kidney in the operating room at Mass General on Jan. 25. (Courtesy of Kate Flock/Massachusetts General Hospital)
The pig kidney within the working room at Mass Common on Jan. 25. (Courtesy of Kate Flock/Massachusetts Common Hospital)

“That is essentially the most vital step of the entire surgical procedure,” stated Riella, Mass Common’s medical director of kidney transplantation. “Immediately, his kidneys have been doing one of the best we might anticipate.”

Andrews is certainly one of solely 4 folks on this planet who’ve ever obtained pig kidneys. And he’s certainly one of simply two nonetheless residing. The opposite is Towana Looney, an Alabama lady who obtained a pig kidney transplant at NYU Langone Well being in November.

Andrews stated he referred to as Looney earlier than his surgical procedure. “He can say scientifically what’s going to occur,” Andrews stated, gesturing towards his physician, “however she’s acquired one in her.”

Surgeons at Massachusetts General Hospital perform a pig kidney transplant operation on Tim Andrews on Jan. 25. (Courtesy of Kate Flock/Massachusetts General Hospital)
Surgeons at Massachusetts Common Hospital carry out a pig kidney transplant operation on Tim Andrews on Jan. 25. (Courtesy of Kate Flock/Massachusetts Common Hospital)

Work within the subject of xenotransplantation is transferring quick, though it has critics who elevate questions concerning the ethics of elevating animals for organs, and the chance of spreading illnesses to people.

Mass Common is planning two extra pig-to-human kidney transplants this yr, as a part of a federally authorized examine. A number of different hospitals and personal firms are additionally working to resolve the human organ scarcity by means of xenotransplants.

“We wish to study as a lot as we will,” Riella stated. “If there are issues that we have to regulate or change, we’ll do this. And we hope that in a couple of years, it is going to be a remedy that we will take into account for sufferers who do not have an choice of a human kidney in a well timed style.”


Andrews makes the 70-mile journey from his residence in Harmony, N.H., to the transplant clinic at Mass Common twice per week, so medical doctors can monitor his restoration. They verify his blood stress, hearken to his respiration, regulate his medicines and examine his urine.

Dr. Leonardo Riella, center, reviews the weekly medications Tim Andrews needs to take with him and his wife, Karen. (Jesse Costa/WBUR)
Dr. Leonardo Riella, heart, evaluations the weekly medicines Tim Andrews must take with him and his spouse, Karen. (Jesse Costa/WBUR)

They don’t know the way lengthy his new kidney will final. Experiments in monkeys counsel not less than two years. However Andrews — who turns 67 this month — is planning for the long run. He needs to get again to fishing and faucet dancing, strolling his canine and taking part in together with his grandkids.

“ I’ve seen extra life in him up to now month than I’ve within the final two-and-a-half years,” his spouse stated.

Subsequent yr, if medical doctors give the go-ahead, Andrews wish to take her to Italy.

“We’ve all the time talked about it however by no means accomplished it,” he stated. “And now I’m within the mode of: Let’s do it now, whereas there’s time.”

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