AAAS: "Hello kitty, goodbye kittens? Gene therapy spays cats without surgery." Spaying or neutering cats + dogs has the added benefit of protecting against mammary cancer + other disorders. Globally, more than half of the approimately 1.5 billion dogs + cats are homeless. "Many die on the streets, victims of cars or disease; others are killed in mass culling campaigns that seek to protect wildlife or prevent the spread of rabies." Spay/neuter surgeries casn help, but large-scle sterilization of often feral animals is infeasible. 'David Pépin, a reproductive biologist at Massachusetts General Hospital, spent his early career researching antimüllerian hormone (AMH), which is produced by follicles in the ovary that give rise to eggs.' Pépin + colleagues inserted the AMH gene with a harmless virus often used to ferry replacement genes into cells with an injection into thigh muscles. The treated cats failed to ovulate, while the sham-injected controls remained fertile. One cat followed over 5 yrs continued to exhibit elevated AMH. A meeting is planned next month with the U.S. Food and Drug Administration to map out larger safety + efficacy studies, but a commercial product will probably not be available for 5 yrs. Having far fewer unsupervised cats in the world would protect many birds + ecosystems.
#spayandneuter #genetherapies #overpopulation