 The ETV6 protein regulates the development and growth of diverse cell types, particularly those of hematological tissues.However, its gene, "ETV6" frequently suffers various mutations that lead to an array of potentially lethal cancers, i.e., "ETV6" is a clinically significant proto-oncogene in that it can fuse with other genes to drive the development and/or progression of certain cancers.However, "ETV6" is also an anti-oncogene or tumor suppressor gene in that mutations in it that encode for a truncated and therefore inactive protein are also associated with certain types of cancers.