Genetic cocktail — psychopathy genetic markers

DRD2 A1, DRD4 7-repeat, 5HTTLPR/rs25531, COMPT (or COMT) Met108/158, MAOA-L (corrections welcome).

So, . . .which one, if any of these, is the no fellow-human-feeling, no empathy, no guilt gene, . . .where do full-genetic-dose psychopaths such as Stacey Castor or Michael Swango fall on this (actually they are not full spectrum full dose psychopaths — they did have the capacity to exercise restraint and to strategize, but on the other-humans-are-just-bugs continuum they are full dose)?