MAOA and autism: Third, among genetically modified rodents—whose neuromodulating system is comparable with the human one, MAOA-KO mice exhibit high correspondence to ASD core symptoms, which warrants its status of “animal model of autism.” In human, the very rare mutation of MAOA responsible for the BS has only been linked to autism 20 years after the former discovery of a family with serious behavioral troubles (Piton et al., 2014).