NR3C1 (Nuclear Receptor Subfamily 3 Group C Member 1): NR3C1 is a gene that encodes the glucocorticoid receptor, which mediates the effects of glucocorticoids—a class of steroid hormones. This receptor is crucial for regulating stress responses, immune function, and metabolism. Dysregulation of NR3C1 has been associated with stress-related disorders, inflammatory diseases, and metabolic conditions, making it a key factor in the body’s adaptation to stress and inflammation.