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Two people who received genetically engineered pig kidneys have now gone on to receive human donor organs, a result that suggests a temporary animal transplant does not block a conventional one later.
A xenograft, the medical term for a transplant between different species, had functioned as a bridge rather than a barrier.
eGenesis, a biotech company working to develop interspecies transplants, announced the outcome on Thursday evening. One of the central concerns in this field has been the immune response.
When a patient receives an organ from another species, the question is whether their body will generate antibodies, proteins the immune system produces to identify and attack foreign material, that could then complicate a human transplant later.
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