Investigation of the p120ctn isoforms with Kaiso by immunoprecipitation showed that p120ctn isoforms 1A and 3A in lung cancer cell lines are able to bind to Kaiso, although the binding capacity of isoform 1A was lower than that of isoform 3A (Fig. 6C and D for SPC; Fig. 6G and H for LTE). This evidence concerns the gene CTNND1 and lung cancer.