Although CEACAM6 is expressed in both cancerous and normal cells, in immunohistochemical studies the pentameric form of the anti-CEACAM6 nanobody component of L-DOS47 bound strongly to lung adenocarcinoma tissues but not to normal lung tissues, either around lung carcinomas or normal non-cancerous lung tissue (32). This evidence concerns the gene CEACAM6 and lung carcinoma.