Abstract
CONTEXT: Germline mutations in AIP have been recently shown to cause pituitary adenoma predisposition (PAP). Subsequently, many intragenic germline mutations have been reported, both in familial and in sporadic settings.
OBJECTIVE: Our objective was to evaluate the possible contribution of large genomic germline AIP deletions, an important mutation type in tumor predisposition syndromes, in PAP.
DESIGN: Here, we applied the multiplex ligation-dependent probe amplification assay to examine whether large genomic AIP or MEN1 alterations account for a subset of PAP cases.
PATIENTS: The study was performed on familial and sporadic pituitary adenoma cases of European origin, which had previously tested negative for germline AIP and MEN1 mutations by sequencing.
RESULTS: Two of 21 pituitary adenoma families (9.5%) were found to harbor an AIP deletion. No copy number changes were detected among 67 sporadic pituitary adenoma patients. No MEN1 deletions were found.
CONCLUSIONS: The present study shows that large genomic AIP deletions account for a subset of PAP. Therefore, in suspected PAP cases undergoing counseling and AIP genetic testing, multiplex ligation-dependent probe amplification could be considered if direct sequencing does not identify a mutation.
Original language | English |
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Pages (from-to) | 4146-51 |
Number of pages | 6 |
Journal | Journal of Clinical Endocrinology and Metabolism |
Volume | 93 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2008 |
Keywords
- Adenoma/genetics
- Adolescent
- Adult
- Base Sequence
- DNA Mutational Analysis
- Family
- Female
- Gene Deletion
- Genetic Predisposition to Disease
- Germ-Line Mutation
- Humans
- Intracellular Signaling Peptides and Proteins/genetics
- Male
- Middle Aged
- Molecular Sequence Data
- Pituitary Neoplasms/genetics
- Precancerous Conditions/genetics