ANO1 and gastrointestinal stromal tumor: In addition, the UZLX-GIST9 model displayed strong positivity for DOG1, which is described as a highly sensitive and specific marker for GIST diagnosis (Figure 1F)[26].In general, the histopathological evaluation of UZLX-GIST9 displayed some variability with regards to tumour morphology throughout the tumour sections, revealing tumour areas with high cellular density and more vacuolated regions (Figure 1C).