Note that animals were not treated with tamoxifen. Median survival and median survival ratio compared to Tpp1-/- littermate controls for each strain was: Tpp1-/- littermate controls (n = 161, 60 deaths), median survival 124 days; Tpp1-/- TgUBC-cre/ERT2 (n = 57, 14 deaths), median survival is 579 days, ratio to Tpp1-/- is 4.825 (95% CI 2.697 to 8.633); Tpp1-/- TgGFAP-cre/ERT2 (n = 54, 46 deaths), median survival is 117 days, ratio to Tpp1-/- is 0.975 (95% CI 0.664 to1.432); Tpp1-/- TgThy1-cre/ERT2 (n = 19, 4 deaths), median survival is 288 days, ratio to Tpp1-/- is 2.4 (95% CI 0.8723 to 6.604); Tpp1-/- Tgicre/ERT2 (n = 20, 19 deaths), median survival is 99 days, ratio to Tpp1-/- is 0.8208 (95% CI 0.49 to 1.375); Tppf/f (n = 754, 50 deaths), median survival is 639 days, ratio to Tpp1-/- is 5.325 (95% CI 3.659 to7.75).