TG2, or Tumor Growth Factor 2, is a protein that plays a significant role in cell growth and development. It is involved in various biological processes, including tissue repair and immune response. Researchers study TG2 to understand its implications in cancer and other diseases, as it can influence tumor progression and metastasis. In addition to its role in cancer, TG2 is also linked to autoimmune diseases and fibrosis. Understanding TG2's functions can help scientists develop targeted therapies that may improve treatment outcomes for patients suffering from these conditions.