Probability of survival after PTF.

(A) The probability of survival in years in 89 allogeneic BMT patients who failed the primary therapy for cGVHD. (B) The probability survival in years after PTF of patients grouped by the calculated PFS2. Patients were grouped as low, intermediate, high, and very high risk if their PFS2 is 0 (n = 14), 2 or less (n = 21), 2 to 3.5 (n = 26), and more than 3.5 (n = 28) at the time of PTF, respectively. The separation between the curves were statistically significant withP values of .005 and < .001, except for the difference between the first (PFS2 = 0) and the second (PFS2 ≤ 2) curve (P = .2). (C) The probability of survival in years after PTF of patients grouped by the total number of risk factors. Patients were grouped as low, intermediate, and high risk if they had none or 1 (n = 34), 2 or 3 (n = 31), and 4 risk factors (n = 24) present at the time of PTF, respectively.