Next, we performed WES of five Sca1‐Lmo2 + nu/nu mice with leukemia and observed 14 somatic alterations (SNVs) in Cdh11 (1/5), Cd1d1 (2/5), Sept6 (2/5), and Hspa1l (1/5; Table 1; Table EV1). The gene discussed is HSPA1L; the disease is leukemia.