Figure 1. Expression levels of period (PER) family (PER1, PER2, and PER3), cryptochrome (CRY) family (CRY1 and CRY2), and other circadian factors such as BMAL1 and CLOCK in different types of cancer (GEPIA). (A–G) This figure shows mRNA expression levels of the PER and CRY families of circadian factors in different cancer tissues. If a cancer had significant overexpression of a gene, the name of the cancer is shown in red. Conversely, if a cancer had a significantly low expression of the gene, green color indicates the name of the cancer.