Table 2.

Summary of published literature relating to the frequency of Epstein-Barr virus in oesophageal cancer.

Reference	Year	Oesophageal cancer type	Total n	EBV positive n (%)	Method
TCGA [24]	2017	SqC	90	0	Whole-exome sequencing
		AdC	70	0
		undiff	2	0
Genitsch et al.[34]	2015	AdC	118	0	EBER ISH
Farris et al.[38]	2011	AdC	76	1 (1)	EBER ISH
Sunpaweravong et al.[36]	2005	SqC	104	0	EBER ISH
Wu et al.[39]	2005	SqC	151	6 (4)	EBER ISH
		undiff	13	4 (31)
Awerkiew et al.[40]	2003	SqC	23	8 (35)	PCR
		AdC	14	5 (36)
Yanai et al.[33]	2003	SqC	34	0	EBER ISH, PCR
Mizobuchi et al.[37]	1997	SqC	41	0	PCR
Wang et al.[35]	1999	SqC	51	0	EBER ISH, PCR
Wang et al.[41]	1999	SqC	31	11 (36)	EBER ISH, PCR

Abbreviations: AdC, adenocarcinoma; SqC, squamous cell carcinoma; EBER ISH, EBV-encoded RNA in situ hybridisation; PCR, polymerase chain reaction; undiff, undifferentiated.