X-Linked Hypophosphatemia at the European Society of Pediatric Endocrinology Meeting 2022

Abstract

Rickets, a growth plate disorder, is classified into calcipenic and phosphopenic types based on the etiology. Phosphopenic rickets can be further classified into fibroblast growth factor 23 (FGF23) mediated and non-FGF23 mediated. FGF-23 has a phosphaturic effect which results in hypophosphatemia and, therefore, the accumulation of hypertrophied chondrocytes, leading to rachitic changes in the bones. One of the most common causes of inherited hypophosphatemic rickets is X-linked hypophosphatemia (XLH), mainly due to a mutation in the PHEX gene that ends in the extended release of FGF-23. During the 60th annual meeting of the European Society for Pediatric Endocrinology, held in Rome between September 15 and 19, 2022, approximately 15 presentations were made either as free communication or poster. In addition, there was a dedicated satellite symposium focusing on XLH. This article has been prepared mainly to share knowledge and updates discussed during the meeting about hypophosphatemic rickets, as we feel this disease is still to be focused on in the MENA region, since there are some gaps in the recognition and management of FGF23 hypophosphatemic rickets and osteomalacia.