Table 2. Comparison of BRAF and NRAS results by allele specific amplification, Sanger sequencing, IHC and Idylla testing.
BRAF IHC | BRAF Idylla | ||||||||||
N | P | NT | All | No mutation | BRAF V600 |
Insufficient material | Cartridge failure | All | |||
BRAF ASA +Sanger sequencing | WT | 38 | 0 | 4 | 42 | 41 | 1 | 42 | |||
BRAF V600X* | 0 | 1 | 0 | 1 | 1 | 1 | |||||
BRAF V600E | 3 | 13 | 1 | 17 | 17 | 17 | |||||
BRAF V600K | 5 | 0 | 0 | 5 | 4 | 1 | 5 | ||||
All | 46 | 14 | 5 | 65 | 42 | 21 | 1 | 1 | 65 | ||
NRAS Idylla | |||||||||||
WT | NRAS Q61X | NRAS G13X | Insuff. material |
Cartridge failure | All | ||||||
NRAS Sanger sequencing | WT | 20 | 20 | ||||||||
NT (BRAF mutated) | 22 | 1 | 23 | ||||||||
NRAS Q61R | 2 | 7 | 9 | ||||||||
NRAS Q61K | 5 | 5 | |||||||||
NRAS Q61L | 1 | 2 | 3 | ||||||||
NRAS Q61_E62delinsHK | 1 | 1 | |||||||||
NRAS G13R | 1 | 1 | |||||||||
NRAS G60E | 1 | 1 | |||||||||
Not Contributive | 1 | 1 | 2 | ||||||||
All | 48 | 14 | 1 | 1 | 1 | 65 |
N, Negative; P, Positive; NT, Not Tested
* Nucleotide characterisation by Sanger sequencing failed