SLC2A1 and squamous cell lung carcinoma: HIF-1α and GLUT1 mRNA expressions obtained from the Genomic Data Commons The Cancer Genome Atlas (GDC TCGA) Lung Adenocarcinoma (LUAD) and GDC TCGA Lung Squamous Cell Carcinoma (LUSC) studies were analyzed to determine the survival rate and average survival time (ast) between high- and low-expression groups (Figure 3).