"Hot spot" in the PROP1 gene responsible for combined pituitary hormone deficiency.

Deladoëy, Johnny; Flück, Christa; Büyükgebiz, A.; Kuhlmann, B. V.; Eblé, Andrée; Hindmarsh, P. C.; Wu, W.; Mullis, Primus-Eugen (1999). "Hot spot" in the PROP1 gene responsible for combined pituitary hormone deficiency. The Journal of clinical endocrinology and metabolism, 84(5), pp. 1645-1650. The Endocrine Society 10.1210/jcem.84.5.5681

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As pituitary function depends on the integrity of the hypothalamic-pituitary axis, any defect in the development and organogenesis of this gland may account for a form of combined pituitary hormone deficiency (CPHD). Although pit-1 was 1 of the first factors identified as a cause of CPHD in mice, many other homeodomain and transcription factors have been characterized as being involved in different developmental stages of pituitary gland development, such as prophet of pit-1 (prop-1), P-Lim, ETS-1, and Brn 4. The aims of the present study were first to screen families and patients suffering from different forms of CPHD for PROP1 gene alterations, and second to define possible hot spots and the frequency of the different gene alterations found. Of 73 subjects (36 families) analyzed, we found 35 patients, belonging to 18 unrelated families, with CPHD caused by a PROP1 gene defect. The PROP1 gene alterations included 3 missense mutations, 2 frameshift mutations, and 1 splice site mutation. The 2 reported frameshift mutations could be caused by any 2-bp GA or AG deletion at either the 148-GGA-GGG-153 or 295-CGA-GAG-AGT-303 position. As any combination of a GA or AG deletion yields the same sequencing data, the frameshift mutations were called 149delGA and 296delGA, respectively. All but 1 mutation were located in the PROP1 gene encoding the homeodomain. Importantly, 3 tandem repeats of the dinucleotides GA at location 296-302 in the PROP1 gene represent a hot spot for CPHD. In conclusion, the PROP1 gene seems to be a major candidate gene for CPHD; however, further studies are needed to evaluate other genetic defects involved in pituitary development.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine 04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine > Endocrinology/Metabolic Disorders 04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Endokrinologie / Diabetologie / Metabolik (Pädiatrie)
UniBE Contributor:	Deladoëy, Johnny, Flück Pandey, Christa Emma, Eblé, Andrée, Mullis, Primus-Eugen
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1945-7197
Publisher:	The Endocrine Society
Language:	English
Submitter:	Anette van Dorland
Date Deposited:	13 Aug 2014 12:22
Last Modified:	02 Mar 2023 23:24
Publisher DOI:	10.1210/jcem.84.5.5681
PubMed ID:	10323394
URI:	https://boris.unibe.ch/id/eprint/45702