Scientists have created lab-grown penises and expect a clinical trial to be conducted within the "next four to five years," with the Armed Forces Institute of Regenerative Medicine providing additional funding for the project. Wake Forest researchers were able to first grow penile erectile tissues in 2009 for rabbits, and exploring possible human tests were considered.
Researchers rely on a donated penis organ that is broken down to its structural cells, with medical patient cells used to help grown prior to a surgery. The surgery requires a patient's own penile cells, so it will not work for transgender men trying to undergo confirmation surgery - but could help men with erectile dysfunction, penile cancer, or congenital abnormalities.
"Think of it like a building," said Dr. James Yoo, a collaborator on the project, in a statement to The Guardian. "If you remove all the furniture and the people, you're still left with the main structure of the building. Then you replace the tenants with new ones. That's the whole idea. It's just that the building is a penis and the tenants are cells."