Impact of Monogenic Disorders and Calcium Metabolism Polymorphisms in Kidney Stone Disease

Kidney stone disease is a common urological disorder that affects nearly 10% of the global population. It is a multifactorial condition influenced by both genetic and metabolic factors. Disturbances in calcium metabolism play a major role in stone formation, and these metabolic processes are tightly regulated by various hormonal mechanisms. Genetic factors, particularly monogenic disorders and genetic polymorphisms, also contribute significantly to the development of kidney stones by altering calcium metabolism. Monogenic stone disorders arise due to inherited mutations in genes responsible for mineral metabolism and renal tubular transport in the kidney. Several inherited conditions, including Dent Disease, Cystinuria, and Primary Hyperoxaluria, are associated with recurrent stone formation.

In addition to these rare genetic mutations, genetic polymorphisms also influence susceptibility to kidney stone disease. Genetic polymorphism refers to the occurrence of common DNA sequence variation among individuals within a population. Variations in genes involved in calcium regulation, such as the Calcium-Sensing Receptor and the Vitamin D Receptor, play an important role in maintaining calcium homeostasis. Alterations in these genes may affect intestinal calcium absorption, renal calcium reabsorption, and overall calcium balance, thereby increasing the risk of calcium-based kidney stones.

This chapter provides an overview of calcium metabolism, the genetic basis of monogenic stone disorders, and the role of genetic polymorphisms in modulating calcium homeostasis. Understanding the interaction between hormonal regulation, genetic mutations, and polymorphic variations is essential for improving the diagnosis, prevention, and personalized management of hereditary kidney stone diseases.