To further characterize the cellular origin of abundant Yap1 protein expression in the Gp130FF gastric tumors, we used well curated gene signatures to further analyse Yap1 mRNA expression in specialised gastric cell populations including parietal cells, chief cells, foveolar cells, mucous neck cells, metaplastic neck cells, neuroendocrine cells, immune cells, and tuft cells using scRNA-Seq (Fig S1C). The gene discussed is YAP1; the disease is gastric neoplasm.