NR2F2 (Nuclear Receptor Subfamily 2 Group F Member 2): NR2F2 is a transcription factor, also known as COUP-TFII, that plays a key role in the development and function of multiple organs, including the heart and vascular system. It regulates genes involved in angiogenesis (formation of new blood vessels) and metabolic processes. Abnormal NR2F2 activity is associated with developmental disorders and certain cancers, where it can affect tumor growth and metastasis.