IGKV2D-26 and breast cancer: In patients with breast cancer [17, 33, 34] and NSCLC [35], expression of FN1 and α5β1 was shown to be associated with poor prognosis, and in breast cancer expression of both MENA and MENAINV was significantly correlated with FN, and to a lesser degree with α5 in patients with worst prognosis [7].