Table 5 Concordance of PIK3CA mutation genotypes between endoscopic biopsy and surgically resected specimens in cases exhibiting a PIK3CA mutation in both specimen types
Surgically resected specimens (reference method) | ||||||
|---|---|---|---|---|---|---|
E542K | E545K | E546Q | H1047R | H1047L | ||
Endoscopic biopsy specimens (trial method) | E542K | 1 | 0 | 0 | 0 | 0 |
E545K | 0 | 3 | 0 | 0 | 0 | |
E546Q | 0 | 0 | 0 | 0 | 0 | |
H1047R | 0 | 0 | 0 | 5 | 0 | |
H1047L | 0 | 0 | 0 | 0 | 1 | |