LDHA and breast cancer: Significantly, the tumor-initiating frequency of ALDH+/GD2+ cells sorted from cryopreserved BC-P007 and BC-P515 was estimated to be approximately 35.2- to 1,000- and approximately 2.8- to 33.3-fold higher than ALDH-/GD2- and ALDH+ cells, respectively (Table 2).