BCHE and cancer: Low serum BChE levels have also been reported in patients with pancreatic (Klocker et al., 2020), colorectal (Morera Ocón et al., 2007), oral (Nair et al., 2017), head and neck (Chougule et al., 2008), non-small cell lung (Shin et al., 2017), and bladder (Koie et al., 2014) cancers, with some of these studies further showing an association with overall survival and highlighting its potential prognostic value.