CHRNA7 and neoplasm: Activation of α7-nAChRs promotes growth and metastasis of pancreatic ductal adenocarcinomas (Schaal et al., 2015), proliferation and invasion of breast (Dasgupta et al., 2009), hepatocellular (Li et al., 2019), gastric (Tu et al., 2016), lung (Davis et al., 2009; Wang and Hu, 2018), and glioblastoma (Pucci et al., 2021) tumor cells.