LINC00665 is highly expressed in 18 cancers, including breast cancer [9,10,11,12,13], prostate cancer [14,15,16], ovarian cancer [17,18,19], cervical cancer [20], endometrial cancer [21], gastric cancer [22,23,24,25], hepatocellular carcinoma [3,26,27], colorectal cancer [8,28,29,30], non-small cell lung cancer [6,7,31], lung adenocarcinoma [1,32,33,34,35], glioma [36], thymic epithelial tumor [37], osteosarcoma [2,38], multiple myeloma [39], melanoma [40], acute myeloid leukemia [41], and acute T lymphoblastic leukemia [42]. This evidence concerns the gene LINC00665 and lung adenocarcinoma.