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http://purl.uniprot.org/citations/17519308http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/17519308http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/17519308http://www.w3.org/2000/01/rdf-schema#comment"

Context

Germline mutations in the MEN1 gene predispose to multiple endocrine neoplasia type 1 (MEN1) syndrome, but in up to 20-25% of clinical MEN1 cases, no MEN1 mutations can be found. Recently, a germline mutation in the CDKN1B gene, encoding p27(Kip1), was reported in one suspected MEN1 family with two acromegalic patients.

Objective

Our objective was to evaluate the role of CDKN1B/p27(Kip1) in human tumor predisposition in patients clinically suspected of MEN1 but testing negative for MEN1 germline mutation as well as in familial and sporadic acromegaly/pituitary adenoma patients.

Design

Genomic DNA was analyzed for germline mutations in the CDKN1B/p27(Kip1) gene by PCR amplification and direct sequencing.

Setting

The study was conducted at nonprofit academic research and medical centers.

Patients

Thirty-six Dutch and one German suspected MEN1 patient, who previously tested negative for germline MEN1 gene mutations, were analyzed. In addition, 19 familial and 50 sporadic acromegaly/pituitary adenoma patients from Europe and the United States were included in the study.

Main outcome measures

We analyzed germline CDKN1B/p27(Kip1) mutations in individuals with pituitary adenoma and MEN1-like features.

Results

A heterozygous 19-bp duplication (c.59_77dup19) leading to a truncated protein product was identified in one Dutch patient with suspected MEN1 phenotype, pituitary adenoma, carcinoid tumor, and hyperparathyroidism (one of 36, 2.8%). No mutations were detected in either familial or sporadic acromegaly/pituitary adenoma patients.

Conclusions

Our results support the previous finding that germline CDKN1B/p27(Kip1) mutations predispose to a human MEN1-like condition. However, such mutations appear uncommon in suspected MEN1 cases and rare or nonexistent in familial or sporadic acromegaly/pituitary adenoma patients."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.org/dc/terms/identifier"doi:10.1210/jc.2006-2843"xsd:string
http://purl.uniprot.org/citations/17519308http://purl.org/dc/terms/identifier"doi:10.1210/jc.2006-2843"xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Paschke R."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Paschke R."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Tischkowitz M."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Tischkowitz M."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Aaltonen L.A."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Aaltonen L.A."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"De Menis E."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"De Menis E."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Georgitsi M."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Georgitsi M."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Gundogdu S."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Gundogdu S."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Karhu A."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Karhu A."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Launonen V."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Launonen V."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Raitila A."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Raitila A."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Sane T."xsd:string
http://purl.uniprot.org/citations/17519308http://purl.uniprot.org/core/author"Sane T."xsd:string
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