Survival according to EBV DNA titer and treatment response (A) Survival according to baseline EBV DNA. (A) Baseline EBV negativity did not affect OS (p = 0.307). (B) Negativity EBV DNA after treatment was significantly associated with OS (p = 0.004). (C) Change pattern (decreasing vs. increasing) of EBV DNA titer during treatment was not significantly associated with OS (p = 0.069). (D) Clinical treatment response showed significant association with OS (p < 0.001). (DOC 103 kb
