CTPS1 and breast cancer: With the exception of UQCRH and LRP8, the expression levels of genes positively correlated with YBX1, such as CTPS1, FMNL2, CDC20, B3GNT5, MTHFD1L, and CDCA8, were significantly and positively correlated with the expression level of YBX1 in 13 breast cancer cell lines (Figure 3B).