A comparison of tumor growth rate and tumor size after inoculation showed tumor growth was markedly delayed in Klf1K74R/K74R mice, while tumor weight was significantly lower than that in Klf1+/+ mice (0.10 ± 0.04 g vs 0.67 ± 0.14 g, p < 0.01) (Figure 5B). Here, KLF1 is linked to neoplasm.