PPP2R1A and lung adenocarcinoma: The expression levels of PPP2R1A are significantly increased in high-grade ovarian serous carcinoma, ovarian serous adenocarcinoma, invasive breast carcinoma, melanoma, lung adenocarcinoma, and bladder carcinoma compared to those in normal tissues32, 33, 34, 35, 36, 37, 38, 39, 40 (Table 1).