Further bioinformatics analysis has revealed that 17 differently expressed ferroptosis-related genes was selected, NOS2 and HMOX1 was confirmed the validity and robustness of HMOX1 and NOS2 genes in diagnose IM, which could be as IM biomarkers, and high expression levels of HMOX1 gene in patients with gastric cancer was identified to have shorter overall survival (Song et al., 2023). Here, HMOX1 is linked to gastric cancer.