FN1 and lung carcinoma: Given the results of mass spectrometry analysis showing that a high ratio of hMENA11a/hMENAΔv6 expression decreases the secretion of a protein cluster belonging to the FN1 pathway, and given the relevance of FN1 expression in lung cancer [43], we evaluated the effect of hMENA11a and hMENAΔv6 transfection on FN1 expression in lung cancer cell lines.