OBJECTIVE: Mutations of the PROP1 gene lead to combined pituitary hormone deficiency (CPHD), which is characterized by a deficiency of GH, TSH, LH/FSH, PRL and, less frequently, ACTH. This study was undertaken to investigate the molecular defect in a cohort of patients with CPHD. DESIGN, PATIENTS AND MEASUREMENTS: A multicentric study involving 46 cases of CPHD (17 familial cases belonging to seven kindreds and 29 sporadic cases) selected on the basis of clinical and hormonal evidence of GH deficiency, central hypothyroidism and hypogonadotrophic hypogonadism, in the absence of an identified cause of hypopituitarism. Mutations of PROP1 were investigated by DNA sequencing. Clinical, hormonal and neuroradiological data were collected at each centre. RESULTS: PROP1 mutations were identified in all familial cases: five kindreds presented a c. 301-302delAG mutation, one kindred presented a c. 358C --> T (R120C) mutation and one presented a previously unreported initiation codon mutation, c. 2T --> C. Of the 29 sporadic cases, only two (6.9%) presented PROP1 germline mutations (c. 301-302delAG, in both). Phenotypic variability was observed among patients with the same mutations, particularly the presence and age of onset of hypocortisolism, the levels of PRL and the results of pituitary imaging. One patient presented a sellar mass that persisted into adulthood. CONCLUSIONS: This is the first report of a mutation in the initiation codon of the PROP1 gene and this further expands the spectrum of known mutations responsible for CPHD. The low mutation frequency observed in sporadic cases may be due to the involvement of other unidentified acquired or genetic causes.
OBJECTIVE: Mutations of the PROP1 gene lead to combined pituitary hormone deficiency (CPHD), which is characterized by a deficiency of GH, TSH, LH/FSH, PRL and, less frequently, ACTH. This study was undertaken to investigate the molecular defect in a cohort of patients with CPHD. DESIGN, PATIENTS AND MEASUREMENTS: A multicentric study involving 46 cases of CPHD (17 familial cases belonging to seven kindreds and 29 sporadic cases) selected on the basis of clinical and hormonal evidence of GH deficiency, central hypothyroidism and hypogonadotrophic hypogonadism, in the absence of an identified cause of hypopituitarism. Mutations of PROP1 were investigated by DNA sequencing. Clinical, hormonal and neuroradiological data were collected at each centre. RESULTS:PROP1 mutations were identified in all familial cases: five kindreds presented a c. 301-302delAG mutation, one kindred presented a c. 358C --> T (R120C) mutation and one presented a previously unreported initiation codon mutation, c. 2T --> C. Of the 29 sporadic cases, only two (6.9%) presented PROP1 germline mutations (c. 301-302delAG, in both). Phenotypic variability was observed among patients with the same mutations, particularly the presence and age of onset of hypocortisolism, the levels of PRL and the results of pituitary imaging. One patient presented a sellar mass that persisted into adulthood. CONCLUSIONS: This is the first report of a mutation in the initiation codon of the PROP1 gene and this further expands the spectrum of known mutations responsible for CPHD. The low mutation frequency observed in sporadic cases may be due to the involvement of other unidentified acquired or genetic causes.
Authors: Qing Fang; Akima S George; Michelle L Brinkmeier; Amanda H Mortensen; Peter Gergics; Leonard Y M Cheung; Alexandre Z Daly; Adnan Ajmal; María Ines Pérez Millán; A Bilge Ozel; Jacob O Kitzman; Ryan E Mills; Jun Z Li; Sally A Camper Journal: Endocr Rev Date: 2016-11-09 Impact factor: 19.871
Authors: Petra Dusatkova; Roland Pfäffle; Milton R Brown; Natallia Akulevich; Ivo J P Arnhold; Maria A Kalina; Karolina Kot; Ciril Krzisnik; Manuel C Lemos; Jana Malikova; Ruta Navardauskaite; Barbora Obermannova; Zuzana Pribilincova; Agnes Sallai; Gordana Stipancic; Rasa Verkauskiene; Ondrej Cinek; Werner F Blum; John S Parks; Frederic Austerlitz; Jan Lebl Journal: Eur J Hum Genet Date: 2015-06-10 Impact factor: 4.246
Authors: F Castinetti; R Reynaud; M-H Quentien; N Jullien; E Marquant; C Rochette; J-P Herman; A Saveanu; A Barlier; A Enjalbert; T Brue Journal: J Endocrinol Invest Date: 2014-09-09 Impact factor: 4.256
Authors: Melitza Elizabeth; Anita C S Hokken-Koelega; Joyce Schuilwerve; Robin P Peeters; Theo J Visser; Laura C G de Graaff Journal: Pituitary Date: 2018-02 Impact factor: 4.107
Authors: Daniel Kelberman; Karine Rizzoti; Robin Lovell-Badge; Iain C A F Robinson; Mehul T Dattani Journal: Endocr Rev Date: 2009-10-16 Impact factor: 19.871
Authors: K Ziemnicka; B Budny; K Drobnik; D Baszko-Błaszyk; M Stajgis; K Katulska; R Waśko; E Wrotkowska; R Słomski; M Ruchała Journal: J Appl Genet Date: 2015-11-25 Impact factor: 3.240