Table 1.

Clinicopathological features of gastric and colonic pathology for families affected by gastric adenocarcinoma and proximal polyposis of the stomach (GAPPS)

			Stomach diagnosis		Colon diagnosis
ID	Age at diagnosis	Gender	EGD findings	Gastric cancer	Colon polyps	Pathology	Other cancers
Family 1
I-1	55	F	GAPPS	Adenocarcinoma	16 polyps distributed through colon	1 tubulovillous adenoma on right, 1 tubulovillous adenoma and 3 tubular adenomas on left, 12 hyperplastic polyps	None
I-2	71	M	GAPPS	Adenocarcinoma	6 polyps distributed through colon	4 tubular adenomas, 2 hyperplastic polyps	None
I-5	Unknown	M	Unknown	Unknown	Unknown	Unknown	Thought to have either gastric or kidney cancer
I-9	32	F	Normal	No	Normal	Normal	None
I-13	45	F	GAPPS	No	Unknown	Unknown	None
I-45	57	F	Gastro-oesophageal junction mass	Adenocarcinoma	Unknown	Unknown	None
I-50	25	F	Normal	No	Sigmoid mass	Stage III adenocarcinoma	None
Family 2
II-1	56	F	GAPPS	Adenocarcinoma	Normal	Normal	None
II-2	Unknown	M	GAPPS	Adenocarcinoma	Multiple polyps	Unavailable—reported to be benign	None
II-5	75	M	Unknown	Adenocarcinoma	Unknown	Unknown	None
II-8	48	F	GAPPS	No	Rectal polyps	Tubular adenoma	None
II-9	50	M	GAPPS	Adenocarcinoma	Unknown	Unknown	None
II-11	21	M	GAPPS	No	Normal	Normal	None
II-12	23	F	GAPPS	No	Rectosigmoid polyp	Hyperplastic polyp	None
II-13	18	F	Normal	No	Normal	Normal	None
II-14	20	F	GAPPS	No	Caecal polyp	Inflammatory polyp	None
II-15	51	F	Multiple fundic polyps	No	Normal	Normal	None
II-22	57	M	GAPPS	No	Sigmoid polyp	Tubular adenoma	Thyroid
II-24	51	M	Normal	No	Normal	Normal	None
II-25	50	F	GAPPS	Adenocarcinoma	Unknown	Unknown	None
II-30	41	M	Normal	No	Normal	Normal	None
II-50	26	F	Normal	No	Normal	Normal	None
II-51	27	F	1 fundic polyp, 4 antral polyps	No	Normal	Normal	None
II-70	Unknown	F	Unknown	Unknown	Unknown	Unknown	Leukaemia

EGD, esophagoduodenoscopy.