The co-localization of NcoA4 with α-tubulin was observed with T47D human breast cancer cells (Fig. 2), and African green monkey kidney cells (COS; Figs. 2, 4 and 5A to C) and human ovarian cancer cells (ES2; Fig. 5D to F), indicating that the association of NcoA4 with microtubules during mitosis occurs in different mammalian cell types. The gene discussed is NCOA4; the disease is ovarian carcinoma.