HIF1A and neoplasm: Especially, naphthofluorescein did not show any effects in Mint3 KO mice on metastasis and endotoxic shock models and on HIF-1 target gene expression in tumours of Mint3-overexpressing HT1080 cells, indicating the specificity of naphthofluorescein for Mint3 in vivo (Fig. 7h).