ATP8A2 and breast cancer: The top downregulated genes in BC were novel.1721 (retrotransposon gag protein), novel.1706 (plant transposase), novel.3210 (AdoHcyase, adenosylhomocysteinase), Zm00001eb201380 (phosphoenolpyruvate carboxykinase (ATP)) and Zm00001eb033760 (oligopeptide transporter 5).