YY1 (Yin‐Yang‐1) is a zinc‐finger transcription factor that belongs to the GLI‐Krüppel gene family 8 and abnormally expressed in lots of cancer such as colon cancer 9, non‐small‐cell lung cancer 10, and myeloma 11, indicating that it has key roles in carcinogenesis. Here, YY1 is linked to cancer.