Table 3.

Mismatch repair status and clinicopathological variables in patients with oesophageal cancer.

Clinicopathological variables		Mismatch repair proficient						Mismatch repair deficient
		LTHT		Oe02		UHC		LTHT		Oe02		UHC
		n	%	n	%	n	%	n	%	n	%	n	%
Sex	Male	137	63.1	294	78.8	287	89.9	2	66.7			3	100
	Female	80	36.9	79	21.2	32	10.1	1	33.3	1	100
(y)pT(6)	T0	2	0.9			3	0.9
	T1	32	14.7	27	7.2	63	19.7					1	33.3
	T2	38	17.5	36	9.7	63	19.7	1	33.3
	T3	136	62.7	301	80.7	185	58	2	66.7	1	100	2	66.7
	T4	9	4.1	9	2.4	5	1.6
(y)pN(6)	N0	83	38.2	123	33	122	38.2			1	100	3	100
	N1	133	61.3	250	67	197	61.8	3	100
	unknown	1	0.5
Histological type	Adenocarcinoma	165	76	275	73.7	319	100	2	66.7			3	100
	Squamous cell carcinoma	49	22.6	87	23.3			1	33.3	1	100
	Other	3	1.4	11	2.9
Neoadjuvant treatment	Yes	80	36.9	177	47.5	194	60.8	2	66.7	1	100	2	66.7
	No	133	61.3	196	52.5	125	39.2	1	33.3			1	33.3
	unknown	4	1.8

Abbreviations: LTHT, Leeds Teaching Hospital Trust; Oe02, oesophageal cancer trial 02 [25]; UHC, University Hospital Cologne.