KCNJ11 is a gene that provides instructions for making a protein called the inward rectifier potassium channel 11. This protein plays a crucial role in regulating the flow of potassium ions in and out of cells, which is essential for maintaining the electrical activity of cells, particularly in the heart and pancreas. Mutations in the KCNJ11 gene can lead to various health issues, including neonatal diabetes and cardiovascular disorders. Understanding this gene is important for developing targeted treatments and managing conditions related to potassium channel dysfunction.