ATM and neoplasm: We did not observe significant differences in tumor-free survival of Atm (P = 0.426) or Myh4 (P = 0.216) when compared to NT mice, with median tumor-free survival of 241 days for the Myh4 group, 244 days for the Atm group, and 319 days for the NT control group (Supplemental Figure 5C).