Neoadjuvant docetaxel, oxaliplatin and S-1 therapy for the patients with large type 3 or type 4 gastric cancer (OGSG1902): protocol of a multi-center, phase II study

Table 1 Definition of PFS event

Preoperative treatment	Surgery	PFS event
non-PD	R0/R1 resection	relapse or death
	R2 resection	relapse, progression, or death
	unresectable/denial of surgery	progression or death
PD	R0/R1 resection	relapse or death
	R2 resection	surgery
	unresectable/denial of surgery	PD judgement

PFS progression-free survival, PD progressive disease, R0 no residual tumor, R1 microscopic residual tumor, R2 macroscopic residual tumor

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