EDA2R, also known as Ectodysplasin A2 receptor, is a protein encoded by the EDA2R gene. It is part of the tumor necrosis factor receptor (TNFR) superfamily and functions as a receptor for ectodysplasin A2 (EDA-A2), a signaling molecule. EDA2R plays a crucial role in mediating EDA-A2 signaling during embryonic development, which controls the formation and patterning of ectodermal tissues such as hair, teeth, and sweat glands.