Fig. 4: Kaplan–Meier analysis of progression-free survival (PFS) with EBV status, CTC enumeration and blood mutation load (BML) in serial and longitudinal analyses.

Kaplan–Meier survival analysis of association of PFS with a serial EBV status (i–iv) and longitudinal change of EBV status (v–vii) at baseline, during and end of CT, and b serial CTC count status (i–iv), post-CT blood mutation load (BML) (v), longitudinal change of CTC status (vi–vii) at baseline, during and end of CT, and combined CTC4/EBV4 (viii).