title: Hypophosphatemic rickets.
abstract: Hypophosphatemic rickets is a disorder of bone mineralization caused due to defects (inherited/acquired) in the renal handling of phosphorus. This group includes varied conditions, X-linked hypophosphatemic rickets being the most common inheritable form of rickets. The other common forms are autosomal dominant hypophosphatemic rickets and tumor-induced osteomalacia. Although these conditions exhibit different etiologies, increased phosphatonins form a common link among them. Fibroblast growth factor 23 (FGF23) is the most widely studied phosphatonin. Genetic studies tend to show that the phosphorus homeostasis depends on a complex osteo-renal axis, whose mechanisms have been poorly understood so far. Newer disorders are being added as the mechanisms in this axis get discovered. This review focuses on the clinical, biochemical, genetic features and management of hypophosphatemic disorders leading to defective mineralization.
authors.affiliation: Department of Endocrinology, Seth G. S. Medical College, Parel, Mumbai, India.
authors.forename: Varsha S
authors.initials: VS
authors.lastname: Jagtap
authors.forename: Vijaya
authors.initials: V
authors.lastname: Sarathi
authors.forename: Anurag R
authors.initials: AR
authors.lastname: Lila
authors.forename: Tushar
authors.initials: T
authors.lastname: Bandgar
authors.forename: Padmavathy
authors.initials: P
authors.lastname: Menon
authors.forename: Nalini S
authors.initials: NS
authors.lastname: Shah