Replies to post #4625 on GTC Biotherapeutics (fka GTCB)

[DewDiligence]

>wouldn't it be antibodies to random goat antigens, not ATryn?<

This is not a consequential distinction, IMO. Since the active ingredient in ATryn (antithrombin) does not cause an immune response, the only component of ATryn that could cause an immune response is an impurity.