[Congenital hypopituitarism: when should transcription factor gene screenings be performed?].
THE GENETIC ORIGIN INCREASINGLY INCRIMINATED: Congenital pituitary hormone deficiencies represent conditions of hypopituitarism resulting from abnormal pituitary ontogenesis. This group of genetically determined diseases has considerably widened with the development of molecular biology. Many transcription factors playing a role in pituitary development have been identified, and their mutations reported as causes of isolated or multiple pituitary hormone deficiencies. Isolated pituitary hormone deficiencies may affect somatotroph, gonadotroph, and corticotroph lineages. They result from mutations of the genes of hormones (such as growth hormone), of a factor that regulates their synthesis or secretion (such as TPIT for corticotrophics), or of their receptors (GHRH or GnRH receptor genes). Multiple (or combined) pituitary hormone deficiencies result in the concomitant or sequential onset of several anterior pituitary hormone deficiencies. They are due to mutations of transcription factors involved in the early steps of pituitary development (RIEG, HesX1, LHX4, LHX3, Prop1, POU1F1/Pit-1), and are associated with various phenotypes. FOR BETTER MANAGEMENT: Long-term follow-up of these patients and functional studies of the mutations identified in specialized research centers will help to determine phenotype-genotype correlations, hence providing a valuable help to the management of these orphan diseases.
Reynaud
Rachel
R
Laboratoire interactions cellulaires neuro-endocriniennes, CNRS UMR 6544, Institut fédératif Jean Roche, faculté de médecine, université de la Méditerranée, Marseille.
Barlier
Anne
A
Chadli-Chaieb
Molka
M
Saveanu
Alexandre
A
Simonin
Gilbert
G
Enjalbert
Alain
A
Brue
Thierry
T
D000324:Adrenocorticotropic Hormone / Q000172:deficiency; D000818:Animals; D002648:Child; D004268:DNA-Binding Proteins / Q000235:genetics / Q000502:physiology; D005260:Female; D005820:Genetic Testing; D005838:Genotype; D013006:Growth Hormone / Q000172:deficiency; D018398:Homeodomain Proteins; D006801:Humans; D007018:Hypopituitarism / Q000151:congenital* / Q000235:genetics* / Q000503:physiopathology / Q000628:therapy; D060850:LIM-Homeodomain Proteins; D051379:Mice; D009154:Mutation; D009687:Nuclear Proteins; D010641:Phenotype; D010902:Pituitary Gland / Q000196:embryology / Q000502:physiology; D010903:Pituitary Gland, Anterior / Q000196:embryology / Q000502:physiology; D010907:Pituitary Hormones / Q000172:deficiency; D010908:Pituitary Hormones, Anterior / Q000172:deficiency; D051381:Rats; D012106:Research; D050817:Transcription Factor Pit-1; D014157:Transcription Factors / Q000235:genetics* / Q000502:physiology; D000097577:Homeobox Protein PITX2
D000324:Adrenocorticotropic Hormone; D004268:DNA-Binding Proteins; D013006:Growth Hormone; D018398:Homeodomain Proteins; D060850:LIM-Homeodomain Proteins; D009687:Nuclear Proteins; D010907:Pituitary Hormones; D010908:Pituitary Hormones, Anterior; D050817:Transcription Factor Pit-1; D014157:Transcription Factors; D000097577:Homeobox Protein PITX2; C094898:Lhx3 protein; C494187:POU1F1 protein, human; C494185:Pou1f1 protein, mouse; C494186:Pou1f1 protein, rat; C102134:Prophet of Pit-1 protein