IL18R1 (Interleukin 18 Receptor 1): IL18R1 is a protein that serves as a receptor for interleukin 18 (IL-18), a cytokine involved in inflammation and immune defense. IL18R1 plays a crucial role in the immune response by facilitating the activation of natural killer cells and specific T-cells, which are vital for combating infection and injury. Variations in the IL18R1 gene can influence susceptibility to inflammatory and autoimmune diseases, highlighting its importance in regulating immune and inflammatory processes.