Table 1.

Concordance in variants detected in tumour tissue and cfDNA from body fluids.

Fluid	Concordance between Sources	Additional Variants in Tissue	Additional Variants in Fluid	Source
Ascites	80% (n = 5)	20% (n = 1)	0% (n = 0)	Perrone, M.E. et al., 2021 [26]
	100% (n = 2)	0% (n = 0)	0% (n = 0)	Yang, S.R. et al., 2019 [27]
	10% (n = 1)	60% (n = 6)	70% (n = 7)	Han, M.R. et al., 2020 [25]
	88% (n = 23)	0% (n = 0)	12% (n = 3)	Leick, K.M. et al., 2020 [34]
CSF	44% (n = 4)	0% (n = 0)	56% (n = 5)	Duan, H. et al., 2020 [28]
Pleural effusions	75% (n = 12)	19% (n = 3)	6% (n = 1)	Perrone, M.E. et al., 2021 [26]
	75% (n = 6)	0% (n = 0)	25% (n = 2)	Yang, S.R. et al., 2019 [27]
	100% (n = 6)	0% (n = 0)	0% (n = 0)	Mokanszki, A. et al., 2021 [32]
	58% (mutations = 96)	18% (mutations = 29)	24% (mutations = 40)	Tong, L. et al., 2019 [33]
	50% (n = 7)	36% (n = 5)	21% (n = 3)	Guo, Z. et al., 2019 [36]

n—number of people, CSF—cerebrospinal fluid.