A Gene-Edited Pig Liver Was Attached to a Person—and Worked for 3 Days

That has led researchers to genetically alter pigs in an attempt to make their organs a better match. The biotech company that bred the pig for the Penn study, eGenesis of Cambridge, Massaschetts, is aiming to do that with gene editing. Scientists at the company used Crispr to make a total of 69 genetic edits … Read more

Gene Editing Needs to Be for Everyone

At the end of 2023, we witnessed an important moment in the history of medicine: For the first time, the US Food and Drug Administration approved a therapy that uses Crispr gene editing. This new therapy was developed by Crispr Therapeutics and Vertex Pharmaceuticals to treat sickle cell disease, an ailment caused by a single-letter … Read more

The First Crispr Medicine Is Now Approved in the US

Casgevy uses the Nobel Prize–winning technology Crispr to modify patients’ cells so that they produce healthy hemoglobin instead. The Crispr system has two parts: a protein that cuts genetic material and a guide molecule that tells it where in the genome to make the cut. To do this, a patient’s stem cells are taken out … Read more

The Second Person to Get a Pig Heart Transplant Just Died

Lawrence Faucette, the 58-year-old patient with terminal heart disease who was the second person to receive a genetically engineered pig heart, died on October 30, according to a statement from the University of Maryland Medical Center in Baltimore, where the transplant was performed. Faucette received the transplant on September 20 and lived for six weeks—less … Read more

These Gene-Edited Chickens Were Made to Resist Bird Flu

The gene edit also helped limit the spread of the virus. Four ordinary chickens were placed in the same incubator with the gene-edited birds that had already been exposed to high levels of the virus. Out of the four, only one became infected. Researchers monitored the gene-edited birds over the course of two years and … Read more