PBX1 and breast carcinoma: In addition, the relationship between the expression of uc.38 and selected clinical-pathological factors was established, the effect of this expression on the breast cancer cell cycle was evaluated in vitro, a correlation between the expression of uc.38 and the function of the transcription factor PBX1 was found, and, finally, the effect of increased expression of uc.38 on the development of breast cancer in vivo was investigated [28].