HOXA9 and lung adenocarcinoma: Non-malignant lung tissue had a median of 0.4% meth-HOXA9 (range of 0.2–0.7%, n = 20), while lung adenocarcinoma tissue had a median of 13.9% meth-HOXA9 (range of 0.8–75%, n = 48, p < 0.001) (see Figure 1).