Survival after BMT in chronic phase according to interval between discontinuation of pretransplant IFN and BMT of less and more than 90 days before BMT. (A) All patients (n = 86). Five-year survival is 46% (95% CI: 32 to 60) and 71% (CI: 52 to 90), respectively. This difference is significant at P = .0057. (B) Patients with related transplants (n = 51). Five-year survival is 43% (95% CI: 26 to 59) and 73% (95% CI: 50 to 96), respectively. (C) Patients with unrelated transplants (n = 35). Three-year survival is 53% (CI: 28 to 79) and 85% (CI: 69 to 100), respectively.