Both CTXN3 and SLC12A2 are indicated to play a role in normal brain function, in addition, the CTXN3-SLC12A2 region is considered as the second most important region linked to schizophrenia in the meta-analysis [7,8], therefore, they may be involved in schizophrenia pathogenesis. Here, CTXN3 is linked to schizophrenia.