GGTA1 and Thrombocytopenia: Although the survival time of the pig cardiac xenograft with six-gene modifications (GGTA1-/-/hCD46/hCD55/hTBM/hCD39/hEPCR or GGTA1-/-/hCD46/hCD55/hEPCR/hCD47/hTFPI) in the baboon was only 200 days, no significant coagulopathy or consumptive thrombocytopenia was observed in the six-transgene cohort (36).