Compared with T‐ALL, the three available PTCL cell lines representing ALCL were at least as sensitive to each DDR inhibitor (ANOVA P < 0.05 for AUCs of AZD6738, MK‐8776, and AZD1775, P ≥ 0.05 for IC50 values; Fig 7, Appendix Fig S6C). Here, DDR1 is linked to acute lymphoblastic leukemia.