(1) cleaved~RIPK1@TNFRSF1 receptor complex -> RIPK1*@TNFRSF1 receptor complex (2) RIPK1@TNFRSF1 receptor complex - cleaved~CASP8 - HTRA2 - cleaved~CASP2 -> cleaved~RIPK1@TNFRSF1 receptor complex