Table 2.

Post-NACT EV level cut-off discriminates between CTC subtypes. BC patients having post-NACT EV levels below the cut-off had a higher incidence of SL-CTCs, ALDH-1 positivity, ERCC1 positivity and ALDH-1/ERCC1 positivity. Data was evaluated by Fisher's exact test.

			EV concentration post-NACT
			cut-off value
			< 2484 ×109/ml		> 2484 ×109/ml
	n total		n	%	n	%	p-value2
SL-CTC1	56	positive	8	14	3	5	0.0463
		negative	15	27	30	54
ALDH-11	59	positive	6	10	1	2	0.0367
		negative	20	34	32	54
ERCC11	98	positive	15	15	9	9	0.1608
		negative	33	34	41	42
ALDH-1/ERCC11	61	positive	17	28	9	15	0.0085
		negative	10	16	25	41

¹not all patients are included due to missing patient data.

²Fisher's exact test.