KRAS mutations in tumor tissue and plasma by different assays predict survival of patients with metastatic colorectal cancer

Table 2 Comparison of KRAS status in tumor tissue and pre-surgery plasma in 242 patients with available paired samples*

*Kappa test was used to estimate the concordance of KRAS status between tumor tissue and plasma samples.
^†All Wald statistical tests were two-sided.
PNA-PCR, peptide-nucleic-acid-mediated polymerase chain reaction clamping.

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