LRFN2 and schizophrenia: Focus only on multiple hit of interact regions, GRIK3 from chromosome 1 interacts with a region in chromosome 3; SULT4A1 from chromosome 22 interacts with a region on chromosome 12; LRFN2 from chromosome 6 interacts with SORBS1 from chromosome 10; Based on queries from GeneCard database (http://www.genecards.org), we found that diseases associated with GRIK3, SULT4A1 and LRFN2 are schizophrenia, schizotypal personality disorder and neuronitis respectively, and SORBS1 is associated with insulin resistance.