HMGA1 and squamous cell lung carcinoma: An increase in HMGA1 mRNA level was associated with a proportional gain in the HMGA1 protein amount in both lung adenocarcinoma (R Spearman 0.40, p < 0.001; R Pearson 0.45 p < 0.001; Figure 7A) and lung squamous cell carcinoma (R Spearman 0.61, p < 0.001; R Pearson 0.54, p < 0.001; Figure 7B).