DLG2 and osteosarcoma: Recently, low DLG2 expression in osteosarcoma (Shao et al. 2019), ovarian cancer (Zhuang et al. 2019) and neuroblastoma (Keane et al. 2020, 2021; Siaw et al. 2020) has been identified as contributing to disease etiology, with low DLG2 expression in neuroblastoma showing increased cell proliferation and poor survival (Keane et al. 2020).