Imagine you are Martin Birchall, laryngologist and ENT surgeon, star of regenerative medicine at UCL and trachea transplant enthusiast. You and your business partner Videregen need to explain to EU bureaucrats why your technology of decellurised cadaveric trachea is perfectly safe, what with all the dead patients of yours and your former best friend Paolo Macchiarini. Preclinical animal tests? Good idea indeed, though you have already published some very shady pig studies with Macchiarini in 2010, after you operated your first human patient in 2008 (whom you keep parading as success story of your stem cell magic superpowers, despite heavy complications which almost killed your research subject).
To distance yourself from that horrid Macchiarini, you do new preclinical tests. Enter three more pigs, which you decide transplant with a cadaveric decellurised human trachea. One trachea turns out to have been dirty not just with human “stem” cells, but also with pathogenic bacteria. So that one piggy got lucky and was set free. The unlucky other two: dead “of respiratory compromise”, one already after 12 days, the other suffered for a whole month after trachea transplant. You now have 100% preclinical mortality rate, and you still manage to convince the bureaucrats that the method works and 48 human patients must experience same, in the EU-funded phase 2 clinical trial TETRA. Thing is, that trachea transplant trial was supposed to help tracheal stenosis patients, by ridding them of burdensome stents and bronchoscopies, and not to euthanise them. Continue reading “Birchall’s two dead pigs to prove trachea transplants are safe”