“…The total number of BRAF mutations for further analysis includes the number of positive mutations detected by polymerase chain reaction (PCR) [ 5 , 9 , 11 , 19 , 21 , 22 , 24 , 29 , 30 ], and data from immunohistochemistry (IHC) results whereby IHC was the sole method available in seven individual studies [ 18 , 20 , 23 , 25 , 26 , 27 , 28 ] ( Table 3 ). For Brown et al’s [ 6 ] study, IHC data were used because not all cases had PCR data; moreover, for cases with both IHC and PCR data, 100% concordance was recorded for both methods in this individual study.…”