Results LDHA expression was significantly higher in adenocarcinoma (χ2 = 20.30, p < 0.001) and squamous cell carcinoma (χ2 = 28.34, p < 0.001) compared with normal lung tissue, with a heterogeneous expression pattern, although no association was observed with tumour stage, grade, or lymph node status. This evidence concerns the gene LDHA and squamous cell carcinoma.