Genital Transplants: Is Science Going Too Far, Too Fast?
Thanks to the remarkable evolution of organ transplantation, it's now possible to replace genitals that don't work properly or have been injured. Surgeons have been transplanting ovarian tissue for more than a decade, and they're now successfully transplanting penises and wombs too.
Rules and regulations aren't keeping up with the rapid rise of genital transplants.
Earlier this year, an American soldier whose genitals were injured by a bomb in Afghanistan received the first-ever transplant of a penis and scrotum at Johns Hopkins Medicine.
Rules and regulations aren't keeping up with the rapid rise of genital transplants, however, and there's no consensus about how society should handle a long list of difficult and delicate questions.
Are these expensive transplants worth the risk when other alternatives exist? Should men, famously obsessed with their penises, be able to ask for a better model simply because they want one? And what happens when transplant technology further muddles the concept of biological parenthood?
"We need to remember that the human body is not a machine with interchangeable parts," says bioethicist Craig M. Klugman of DePaul University. "These are complicated, difficult and potentially dangerous surgeries. And they require deep consideration on a physical, psychological, spiritual, and financial level."
From Extra Testicles to Replacement Penises
Tinkering with human genitalia -- especially the male variety -- is hardly a new phenomenon. A French surgeon created artificial penises for injured soldiers in the 16th century. And a bizarre implant craze swept the U.S. in the 1930s when a quack physician convinced men that, quite literally, the more testicles the merrier – and if the human variety wasn't available, then ones from goats would have to do.
Now we're more sophisticated. Modern genital transplants are designed to do two things: Treat infertility (in women) and restore the appearance and function of genitals (in men).
In women, surgeons have successfully transplanted ovarian tissue from one woman to another since the mid-2000s, when an Alabama woman gave birth after getting a transplant from her identical twin sister. Last year, for the first time in the U.S., a young woman gave birth after getting a uterus transplant from a living donor.
"Where do you draw the line? Is pregnancy a privilege? Is it a right?"
As for men, surgeons in the U.S. and South Africa have successfully transplanted penises from dead men into four men whose genitals were injured by a botched circumcision, penile cancer or a wartime injury. One man reportedly fathered a child after the procedure.
The Johns Hopkins procedure was the first to include a scrotum. Testicles, however, were not transplanted due to ethical concerns. Surgeons have successfully transplanted testicles from man-to-man in the past, but this procedure isn't performed because the testes would produce sperm with the donor's DNA. As a result, the recipient could father a baby who is genetically related to the donor.
Are Transplants Worth the Expense and Risk?
Genital transplants are not simple procedures. They're extremely expensive, with a uterus transplant estimated to cost as much as $250,000. They're dangerous, since patients typically must take powerful drugs to keep their immune systems from rejecting their new organs. And they're not medically necessary. All have alternatives that are much less risky and costly.
Dr. Hiten D. Patel, a urologist at Johns Hopkins University, believes these types of factors make penis transplants unnecessary. As he wrote in a 2018 commentary in the journal European Urology, "What in the world are we doing?"
There are similar questions about female genital transplants, which allow infertile women to become pregnant instead of turning to alternatives like adoption or surrogacy. "This is not a life-saving transplant. A woman can very well live without a uterus," says McGill University's Dr. Jacques Balayla, who studies uterine transplantation. "Where do you draw the line? Is pregnancy a privilege? Is it a right? You don't want to cause harm to an individual unless there's an absolute need for the procedure."
But Johns Hopkins urologist Dr. Arthur L. Burnett II, who served on the surgical team that performed the penis-and-scrotum procedure, says penis transplants can be appropriate when other alternatives – like a "neophallus" created from forearm skin and tissue – aren't feasible.
It's also important to "restore normalcy," he says. "We want someone to be able to have sense of male adequacy and a normal sense of bodily well-being on both physical and psychological levels."
Surgical team members who performed the penis transplant, including W. P. Andrew Lee, director of the department of plastic and reconstructive surgery, center.
As for the anonymous recipient, he's reportedly doing "very well" five months after the transplant. An update on Johns Hopkins' website states that "he has normal urinary functions and is beginning to regain sensation in the transplanted tissues."
When the Organ Donors Do It Live
Some peculiar messages reached Burnett's desk after his institution announced it would begin performing penis transplants. Several men wanted to donate their own organs. But for now, transplanted penises are only coming from dead donors whose next of kin have approved the donation.
Burnett doesn't expect live donors to enter the penis transplant picture. But there are no guidelines or policies to stop surgeons from transplanting a penis from a live donor or, for that matter, a testicle.
Live women have already donated wombs and ovarian tissue, forcing them to face their own risks from transplant surgery. "You're putting the donor at risk because she has to undergo pretty expensive surgery for a procedure that is not technically lifesaving," McGill University's Balayla says.
When it comes to uterus transplants, the risk spreads even beyond donor and recipient. Balayla notes there's a third person in the equation: The fetus. "Immunosuppressant medication may harm the baby, and you're feeding the baby with a [uterine] blood vessel that's not natural, held together by stitches," he says.
It's up to each medical institution that performs the procedures to set its own policies.
Bioethicists are talking about other issues raised by genital transplants: How should operations for transgender people fit in? Should men be able to get penis transplants for purely cosmetic reasons? And then there's the looming question of genetic parenthood.
It's up to each medical institution that performs the procedures to set its own policies.
Let's say a woman gets a transplant of ovarian tissue, a man gets a testicle transplant, and they have a baby the old-fashioned way.* The child would be genetically linked to the donors, not the parents who conceived him or her.
Call this a full-employment act not just for bioethicists but theologians too. "Catholicism is generally against reproductive technologies because it removes God from the nature of the procreative act. This technology, though, could result in conception through the natural act. Would their concern remain?" DePaul University's Klugman asked. "Judaism is concerned with knowing a child's parentage, would a child from transplanted testes be the child of the donor or the recipient? Would an act of coitus with a transplanted penis be adultery?"
Yikes. Maybe it's time for the medical field or the law to step in to determine what genital transplants surgeons can and can't -- or shouldn't -- do.
So far, however, only uterus transplants have guidelines in place. Otherwise, it's up to each medical institution that performs the procedures to set its own policies.
"I don't know if the medical establishment is in the position to do the best job of self-regulation," says Lisa Campo-Engelstein, a bioethicist with Albany Medical College. "Reproductive medicine in this country is a huge for-profit industry. There's a possibility of exploitation if we leave this to for-profit fertility companies."
And, as bioethicist Klugman notes, guidelines "aren't laws, and people can and do violate them with no effect."
He doesn't think laws are the solution to the ethical issues raised by genital transplants either. Still, he says, "we do need a national conversation on these topics to help provide guidance for doctors and patients."
[Correction: The following sentence has been updated: "Let's say a woman gets a transplant of ovarian tissue, a man gets a testicle transplant, and they have a baby the old-fashioned way." The original sentence mistakenly read "uterus transplant" instead of "ovarian tissue."]
Few things are more painful than a urinary tract infection (UTI). Common in men and women, these infections account for more than 8 million trips to the doctor each year and can cause an array of uncomfortable symptoms, from a burning feeling during urination to fever, vomiting, and chills. For an unlucky few, UTIs can be chronic—meaning that, despite treatment, they just keep coming back.
But new research, presented at the European Association of Urology (EAU) Congress in Paris this week, brings some hope to people who suffer from UTIs.
Clinicians from the Royal Berkshire Hospital presented the results of a long-term, nine-year clinical trial where 89 men and women who suffered from recurrent UTIs were given an oral vaccine called MV140, designed to prevent the infections. Every day for three months, the participants were given two sprays of the vaccine (flavored to taste like pineapple) and then followed over the course of nine years. Clinicians analyzed medical records and asked the study participants about symptoms to check whether any experienced UTIs or had any adverse reactions from taking the vaccine.
The results showed that across nine years, 48 of the participants (about 54%) remained completely infection-free. On average, the study participants remained infection free for 54.7 months—four and a half years.
“While we need to be pragmatic, this vaccine is a potential breakthrough in preventing UTIs and could offer a safe and effective alternative to conventional treatments,” said Gernot Bonita, Professor of Urology at the Alta Bro Medical Centre for Urology in Switzerland, who is also the EAU Chairman of Guidelines on Urological Infections.
The news comes as a relief not only for people who suffer chronic UTIs, but also to doctors who have seen an uptick in antibiotic-resistant UTIs in the past several years. Because UTIs usually require antibiotics, patients run the risk of developing a resistance to the antibiotics, making infections more difficult to treat. A preventative vaccine could mean less infections, less antibiotics, and less drug resistance overall.
“Many of our participants told us that having the vaccine restored their quality of life,” said Dr. Bob Yang, Consultant Urologist at the Royal Berkshire NHS Foundation Trust, who helped lead the research. “While we’re yet to look at the effect of this vaccine in different patient groups, this follow-up data suggests it could be a game-changer for UTI prevention if it’s offered widely, reducing the need for antibiotic treatments.”
MILESTONE: Doctors have transplanted a pig organ into a human for the first time in history
Surgeons at Massachusetts General Hospital made history last week when they successfully transplanted a pig kidney into a human patient for the first time ever.
The recipient was a 62-year-old man named Richard Slayman who had been living with end-stage kidney disease caused by diabetes. While Slayman had received a kidney transplant in 2018 from a human donor, his diabetes ultimately caused the kidney to fail less than five years after the transplant. Slayman had undergone dialysis ever since—a procedure that uses an artificial kidney to remove waste products from a person’s blood when the kidneys are unable to—but the dialysis frequently caused blood clots and other complications that landed him in the hospital multiple times.
As a last resort, Slayman’s kidney specialist suggested a transplant using a pig kidney provided by eGenesis, a pharmaceutical company based in Cambridge, Mass. The highly experimental surgery was made possible with the Food and Drug Administration’s “compassionate use” initiative, which allows patients with life-threatening medical conditions access to experimental treatments.
The new frontier of organ donation
Like Slayman, more than 100,000 people are currently on the national organ transplant waiting list, and roughly 17 people die every day waiting for an available organ. To make up for the shortage of human organs, scientists have been experimenting for the past several decades with using organs from animals such as pigs—a new field of medicine known as xenotransplantation. But putting an animal organ into a human body is much more complicated than it might appear, experts say.
“The human immune system reacts incredibly violently to a pig organ, much more so than a human organ,” said Dr. Joren Madsen, director of the Mass General Transplant Center. Even with immunosuppressant drugs that suppress the body’s ability to reject the transplant organ, Madsen said, a human body would reject an animal organ “within minutes.”
So scientists have had to use gene-editing technology to change the animal organs so that they would work inside a human body. The pig kidney in Slayman’s surgery, for instance, had been genetically altered using CRISPR-Cas9 technology to remove harmful pig genes and add human ones. The kidney was also edited to remove pig viruses that could potentially infect a human after transplant.
With CRISPR technology, scientists have been able to prove that interspecies organ transplants are not only possible, but may be able to successfully work long term, too. In the past several years, scientists were able to transplant a pig kidney into a monkey and have the monkey survive for more than two years. More recently, doctors have transplanted pig hearts into human beings—though each recipient of a pig heart only managed to live a couple of months after the transplant. In one of the patients, researchers noted evidence of a pig virus in the man’s heart that had not been identified before the surgery and could be a possible explanation for his heart failure.
So far, so good
Slayman and his medical team ultimately decided to pursue the surgery—and the risk paid off. When the pig organ started producing urine at the end of the four-hour surgery, the entire operating room erupted in applause.
Slayman is currently receiving an infusion of immunosuppressant drugs to prevent the kidney from being rejected, while his doctors monitor the kidney’s function with frequent ultrasounds. Slayman is reported to be “recovering well” at Massachusetts General Hospital and is expected to be discharged within the next several days.