LRFN4 and gastric cancer: Noteworthily, Konakahara and colleagues have revealed that LRFN4 protein was expressed in a wide range of human cancer and leukemia cell lines, gastric cancer MKN7 cells, T-cell leukemia Jurkat cells, breast cancer SK-BR-3 cells Burkitt’s lymphoma Ramos cells and monocytic leukemia THP-1 and U937 cells (Konakahara et al., 2011).