Table 4.

Correlation of CTC subtypes and PTP4A1 expression with the efficacy of neoadjuvant therapy in esophageal cancer.

	The efficacy of neoadjuvant therapy		P
	Good	Poor efficacy
T-CTCs
<5	5	10	.513
≥5	14	45
E-CTCs
<1	3	11	1.000
≥1	16	44
M-CTCs
<1	14	18	.002
≥1	5	37
H-CTCs
<1	5	17	.706
≥1	14	38
PTP4A1+ECTCs
<1	10	15	.044
≥1	9	40
PTP4A1+MCTCs
<1	15	20	.001
≥1	4	35
PTP4A1+HCTCs
<1	8	11	.374
≥1	17	38

CTCs = circulating tumor cells, PTP4A1 = protein tyrosine phosphatase type I.