The NETest liquid biopsy is diagnostic for gastric neuroendocrine tumors: observations on the blood-based identification of microscopic and macroscopic residual disease

Table 3 Characteristics of post-partial gastrectomy NETest-positive subjects (n = 3)

Subject #	GNET Type	Gastrectomy Type	Surgical Pathology	Grade (Ki-67)	Post-surgery blood (years)	NETest score	Endoscopy prior to blood draw^a	Previous Endoscopy^b	FU-imaging^c
4	1	Wedge gastric body resection	pT1	G2 (3%)	1.9	27%	2 months: Negative^d	10 months: Foci of NE cells	8 months: Increased tracer uptake on ⁶⁸Ga-SSA PET/CT in pancreatic head and duodenum CT-negative^d EUS: ND
5	1	Wedge gastric body resection	pT1	G2 (3%)	5.3	20%	15 months: Negative^d	3 years: Negative^d	3 months: CT-negative^d
6	1	Pylorus preserving gastrectomy	ND	G2 (10%)	3.9	33%	17 months: Negative^d	4 months: 5 recurrent NET lesions	0 month: CT-negative^d

^aGastroscopy prior to blood draw (time between endoscopy and blood draw for the NETest); ^bPrevious Endoscopy (time between two last endoscopies); ^cFollow-up (FU) imaging (time between imaging and blood draw); 0 month = blood taken just prior to imaging; Negative^d = Negative for NET; ND = not done/no data; NE = neuroendocrine; Subject # = Subject number

ISSN: 1471-230X