Molecular analysis of novel PROP1 mutations associated with combined pituitary hormone deficiency (CPHD)

D. Kelberman, J. P G Turton, K. S. Woods, A. Mehta, M. Al-Khawari, J. Greening, P. G F Swift, T. Otonkoski, Simon Rhodes, M. T. Dattani

Research output: Contribution to journalArticle

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Abstract

Objective: Homozygous mutations in the gene encoding the pituitary transcription factor PROP1 are associated with combined pituitary hormone deficiency (CPHD) in both mice and humans with a highly variable phenotype with respect to the severity and time of initiation of pituitary hormone deficiency. We have ascertained three pedigrees with PROP1 mutations from a large cohort of patients with variable degrees of CPHD who were screened for mutations in PROP1. Results: Affected individuals from all three pedigrees were found to harbour novel PROP1 mutations. We have identified two siblings in one family who were homozygous for an intronic mutation (c.343-11C > G) that disrupts correct splicing resulting in the loss of exon 3 from the PROP1 transcript. Two siblings from a second, unrelated family are compound heterozygotes for two point mutations in the coding region, a missense mutation (p.R125W) that leads to impaired transcriptional activation, and a deletion of a single nucleotide (c.310delC) resulting in a frameshift and nonfunctional mutant protein. Additionally, we identified a homozygous deletion of the PROP1 locus in two patients born to consanguineous parents. Conclusion: Mutations in PROP1 are a frequent cause of familial CPHD. We have described four novel mutations in PROP1 in 3 pedigrees, all resulting in PROP1 deficiency by different mechanisms. The phenotypic variation observed in association with PROP1 mutations both within and between families, together with the evolving nature of hormone deficiencies and sometimes changing pituitary morphology indicates a need for continual monitoring of these patients.

Original languageEnglish
Pages (from-to)96-103
Number of pages8
JournalClinical Endocrinology
Volume70
Issue number1
DOIs
StatePublished - Jan 2009

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Mutation
Pedigree
Siblings
Pituitary Hormones
Combined Pituitary Hormone Deficiency
Physiologic Monitoring
Missense Mutation
Mutant Proteins
Heterozygote
Point Mutation
Transcriptional Activation
Exons
Transcription Factors
Nucleotides
Parents
Hormones
Phenotype
Genes

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism

Cite this

Kelberman, D., Turton, J. P. G., Woods, K. S., Mehta, A., Al-Khawari, M., Greening, J., ... Dattani, M. T. (2009). Molecular analysis of novel PROP1 mutations associated with combined pituitary hormone deficiency (CPHD). Clinical Endocrinology, 70(1), 96-103. https://doi.org/10.1111/j.1365-2265.2008.03326.x

Molecular analysis of novel PROP1 mutations associated with combined pituitary hormone deficiency (CPHD). / Kelberman, D.; Turton, J. P G; Woods, K. S.; Mehta, A.; Al-Khawari, M.; Greening, J.; Swift, P. G F; Otonkoski, T.; Rhodes, Simon; Dattani, M. T.

In: Clinical Endocrinology, Vol. 70, No. 1, 01.2009, p. 96-103.

Research output: Contribution to journalArticle

Kelberman, D, Turton, JPG, Woods, KS, Mehta, A, Al-Khawari, M, Greening, J, Swift, PGF, Otonkoski, T, Rhodes, S & Dattani, MT 2009, 'Molecular analysis of novel PROP1 mutations associated with combined pituitary hormone deficiency (CPHD)', Clinical Endocrinology, vol. 70, no. 1, pp. 96-103. https://doi.org/10.1111/j.1365-2265.2008.03326.x
Kelberman, D. ; Turton, J. P G ; Woods, K. S. ; Mehta, A. ; Al-Khawari, M. ; Greening, J. ; Swift, P. G F ; Otonkoski, T. ; Rhodes, Simon ; Dattani, M. T. / Molecular analysis of novel PROP1 mutations associated with combined pituitary hormone deficiency (CPHD). In: Clinical Endocrinology. 2009 ; Vol. 70, No. 1. pp. 96-103.
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