An Australian government panel has issued draft guidelines authorizing
clinical trials to proceed on transplantation of organs and cells
from genetically modified pigs into humans.
The National Health and Medical Research Council working group
said it had concluded that the benefits of proceeding with strictly
controlled trials of
animal-to-human transplants (xenotransplantation) outweigh the
risks.
"The tentative
conclusion of the working party, ahead of community consultation,
is to allow clinical research to proceed cautiously under centrally
administered guidelines," Dr. Kerry Breen, chairman of the
working group.
The draft guidelines
now are open to public comment, and are expected to be hotly debated
by medical, patient and animal welfare groups.
The working group indicated,
however, that it believes any "theoretical risk" of
an animal virus crossing the species barrier can be contained.