Table 1. Accuracy of swallowable devices for diagnosing Barrett’s esophagus.

Study	Device	Biomarker(s)	Sensitivity	Specificity	AUC
Wang, 2019 (16)	EsophaCap	p16 + NELL1 + AKAP12 + TAC1 + age	94.4% (train), 78.6% (test)	62.2% (train), 92.8% (test)	0.883 (train), 0.929 (test)
Iyer, 2018 (11)	EsophaCap	VAV3 + ZNF682	100%	100%	1.000
Moinova, 2018 (12)	JASSS balloon	CCNA1 + VIM	90.3%	91.7%	–
Chettouh, 2018 (13)	Cytosponge	TFPI2, TWIST1, ZNF345, ZNF569	78.5% (TFPI2)	96.9% (TFPI2)	0.877 (TFPI2)
Ross-Innes, 2015 (14)	Cytosponge	TFF3	79.9% (overall), 87.2% (≥3 cm BE)	92.4%	–
Kadri, 2010 (15)	Cytosponge	TFF3	73.3% (≥1 cm BE), 90.0% (≥2 cm BE)	93.8% (≥1cm BE), 93.5% (≥2cm BE)	–

‘Train’ and ‘test’ refer to training and testing sets, respectively.