title: Albright's hereditary osteodystrophy associated with cerebellar pilocytic astrocytoma: coincidence or genetic relationship?
abstract: Albright's hereditary osteodystrophy (AHO) is a rare inherited disease characterized by skeletal abnormalities, short stature, and, in some cases, resistance to parathyroid hormone, resulting in pseudohypoparathyroidism (PHP). Heterozygous inactivating mutations of the GNAS1 gene are responsible for reduced activity of the alpha subunit of the Gs protein (G(Salpha)), a protein that mediates hormone signal transduction across cell membranes. G(salpha) is also known to have oncogenic potentials, leading to the development of human pituitary tumors and Leydig cell tumors. Here, we report the 1st case, a 3.5-year-old girl, with classic AHO phenotype and PHP type 1A associated with a cerebellar pilocytic astrocytoma. Coincidence or genetic relationships of both diseases are discussed according to molecular findings and current literature.
authors.affiliation: Department of Neurosurgery, Technical University of Dresden, Fetscherstrasse 74, D-01307 Dresden, Germany. stephan.sobottka@mailbox.tu-dresden.de
authors.forename: S B
authors.initials: SB
authors.lastname: Sobottka
authors.forename: A
authors.initials: A
authors.lastname: Huebner
authors.forename: M
authors.initials: M
authors.lastname: Haase
authors.forename: W
authors.initials: W
authors.lastname: Ahrens
authors.forename: E
authors.initials: E
authors.lastname: Rupprecht
authors.forename: H K
authors.initials: HK
authors.lastname: Schackert
authors.forename: G
authors.initials: G
authors.lastname: Schackert
mesh_terms: D000328:Adult; D001254:Astrocytoma / Q000235:genetics*; D002528:Cerebellar Neoplasms / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D004252:DNA Mutational Analysis / Q000379:methods; D005260:Female; D019205:GTP-Binding Protein alpha Subunits, Gs / Q000172:deficiency / Q000235:genetics; D018095:Germ-Line Mutation / Q000235:genetics; D006801:Humans; D007223:Infant; D008297:Male; D015513:Oncogene Proteins / Q000172:deficiency / Q000235:genetics; D010375:Pedigree; D011556:Pseudopseudohypoparathyroidism / Q000235:genetics*
chemical_list: D015513:Oncogene Proteins; D019205:GTP-Binding Protein alpha Subunits, Gs