YBX1 and ovarian cancer: Other studies conducted in the breast, ovarian cancer, and non-small cell lung cancer tissue specimens as well as osteosarcoma have in a manner similar to our data confirmed the presence of concomitant nuclear YB-1 expression together with cytoplasmic localisation of YB-1 (Bargou et al, 1997; Oda et al, 1998, 2003; Kamura et al, 1999; Shibahara et al, 2001).