NOTCH1 and acute lymphoblastic leukemia: We did not observe Notch1 or Ras indels/SNVs, in contrast to T‐ALL from Rosa26‐Lmo2 + Sca1‐Cre and Sca1‐tomato‐IRES‐Lmo2 mice and human LMO2+ T‐ALL (Table 1).