Because the CYP2C19 model has cerebellar atrophy and abnormal serotonergic system activity [5], it can be speculated that the clasping reflex in CYP2C19 transgenic mice is caused by cerebello‐cortico‐reticular pathway disturbance combined with abnormal serotonergic system function, but further research on this topic is needed for firmer claims. Here, CYP2C19 is linked to Cerebellar atrophy.