Wehavereviewedthegenetherapyingastrointestinaldiseases^[1].GastriccanceriscommoninChina^(2-20),anditsearlydiagnosisandtreatmentarestilldifficultuptonow^(13-36).Theex-pressionofanexogenousgeneintroducedbygenetherapyintopa-tientswithgliomascanbemonitorednon-invasivelybypositron-emissiontornography^[4].