CHGA and cancer: Discrepant results between PC3–57 + CD82 and PC3–29 + CD82 clonal cells when compared with PC3-5 V -CD82 cells may be due to the fact that prostate tumor can harbor multiple genetically distinct cancer clones with heterogenous ERG+, ETS+, SPI+ and triple negative subtypes [80, 81] that can affect different gene regulation and pathways.