The correct question would be in theory is there enough of a difference between producing antithrombin Vs FVIII and FIX to make production of antithrombin by PER.C6® cell line impossible or not economically feasible?
One could understand the emphasis on FVIII and FIX since those drugs have a well-established market.
Is there any reason antithrombin couldn't also be produced by this PER.C6® platform?