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| Total number | GNAS(+)/KRAS(+) | GNAS(+)/KRAS(−) | GNAS(−)/KRAS(+) | GNAS(−)/KRAS(−) | |
|---|---|---|---|---|---|
| Gastric foveolar metaplasia | 66 | 8 (12%) | 19 (29%)* | 9 (14%) | 30 (45%) |
| Gastric heterotopia | 81 | 2 (2%) | 21 (26%) | 0 | 58 (72%) |
| Adenocarcinoma | 30 | 1 (3%) | 4 (13%) | 10 (33%) | 15 (50%) |
One lesion had concurrent GNAS and BRAF mutations.
