SLC16A1 and neoplasm: With an interest in describing a role for MCT isoforms in the Cori Cycle, Garcia et al.137 subsequently described the isolation of a second isoform (MCT2, in effect renaming the first transporter discovered to MCT1) by screening a Syrian hamster liver library; MCT2 was initially found in the liver and testes but subsequently also in the brain138,139 and some tumor cell lines16,140,141.