Table 2. Prognostic significance of DTCs before and after therapy with regard to PFS and OS.

Status	Number of patients (n)	PFS (p-value)	OS (p-value)
Total	79
DTCpos before therapy	33	0.06	0.02
DTCpos after therapy	32	0.35	0.98
DTCpos/DTCpos	13	0.06	0.07
DTCneg/DTCneg	27	0.77	0.31
DTCpos/DTCneg	20	0.46	0.25
DTCneg/DTCpos	19	0.03	0.18