MTDH (Metadherin), also known as AEG-1, is a multifunctional protein involved in key cellular processes such as cell adhesion, migration, and cancer development. It plays a significant role in tumour growth, angiogenesis, and metastasis, acting as an oncogene. Due to its involvement in promoting chemoresistance and its link to poor clinical outcomes, MTDH is considered an important target for cancer therapy.