CLK2 and hematopoietic and lymphoid cell neoplasm: Regarding the expression of CLK2, when we divided solid or hematological cancer cell lines into three groups on the basis of CLK2 expression (high, medium, and low), solid cancer cell lines with high CLK2 expression were significantly more sensitive than those with low CLK2 expression (P < 0.0001, Fig 3C), but not hematological cancer cell lines with high CLK2 expression (Fig EV2F).