ALK and childhood malignant neoplasm: These results are consistent with previous studies reporting expression of Alk in the Drosophila larval prothoracic gland (Pan and O’Connor, 2021), the neuroendocrine functions of Alk in mice (Ahmed et al., 2022; Reshetnyak et al., 2015; Witek et al., 2015), and the role of oncogenic ALK in neuroblastoma, a childhood cancer which arises from the neuroendocrine system (Matthay et al., 2016; Umapathy et al., 2019).