Colorectal cancer: using blood samples and tumor tissue to detect K-ras mutations.

Abstract:

:We performed a meta-analysis to assess whether blood can be substituted for tumor tissue in K-ras mutation testing. PubMed, EMBASE, MEDLINE, and BIOSIS databases were searched. Twenty-three studies including 1261 patients were included. The pooled overall sensitivity, specificity, and concordance rate were 0.69 (95% CI: 0.59-0.78), 0.96 (95% CI: 0.93-0.97), and 0.86 (95% CI: 0.82-0.89), respectively. Subgroup analysis indicated that plasma (sensitivity: 0.74; mutation rate: 0.34) exhibited superior sensitivity compared with serum (sensitivity: 0.45; mutation rate: 0.24). We conclude that blood is a suitable substitute for tumor tissue in K-ras mutation testing. K-ras mutation positivity in blood can be used to identify patients who should not receive EGFR monoclonal antibody therapy, but the absence of blood positivity does not necessarily imply negativity.

authors

Li Y,Fu XH,Yuan JQ,Yang ZY,Mao C,Dong XM,Tang JL,Wang SY

doi

10.1586/14737140.2015.1037836

subject

Has Abstract

pub_date

2015-06-01 00:00:00

pages

715-25

issue

6

eissn

1473-7140

issn

1744-8328

journal_volume

15

pub_type

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