SOX6 and neoplasm: Consistently, in the mice injected with HeLa-HA-SOX6-tet cells, the sizes and weights of tumor blocks collected at 3 weeks post-injection were significantly lower in the Dox-treated group than that in PBS-treated group, but not for the mice injected with HeLa-HA-SOX6ΔHMG-tet cells (Fig. 2J, K).