Sub-network linked NRG1 with CACNG2 according to biological interpretation. This small network linked NRG1 with CACNG2 via the ERBB4 and DLG4 gene products. DLG4 is interacting with both the ERBB4 and NMDAR gene products. The former is the NRG1 receptor and the latter is a calcium channel triggered by neurotransmitter glutamate. The CACNG2 gene product may recruit another glutamate-triggered calcium channel, AMPA receptor. Proteins painted with yellow color are candidate genes in this study.