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Cyclin D1 (CCND1) genotype is associated with tumour grade in sporadic pituitary adenomasSimpson, D... J. ...The cyclin D1 (CCNDI ) gene contains a frequent A/G polymorphism within the splice donor region of exon 4/intron 4. CCNDI genotype is associated with clinical outcome in a number of malignancies ... although prognostic significance varies with tumour type. We examined CCNDI allele frequencies and genotype distribution in 294 patients with sporadic pituitary adenomas of various histologies. CCNDI allele frequencies and distribution of genotypes were similar in the 294 cases compared with previously reported control populations. Analysis according to tumour subtype showed no statistical difference in allele frequencies compared with controls. However, CCNDl genotype distribution in the somatotrophinomas showed a significant differencecompared with normal controls (P = 0.008). We next examined CCNDl allele frequencies and genotype distribution across the tumour grades. Within the total tumour cohort the CCNDl allele frequencies showed a significant inverse relationship across the tumour grades (P = 0.005). The CCNDI A allele progressively increased from grade 1 (0.37) through to grade 4 (0.62) tumours,whilst the CCNDl G allele frequency progressively decreased from grade1 (0.63) through to grade 4 (0.38) tumours. Trend analysis of CCNDI genotypes showed a significant progressive increase in AA frequency from grade1 (15 % ) through to grade 4 (46 %) tumours (P = 0.005). The CCNDI GG genotype progressively decreased from grade 1 (41 % ) through to grade 4 (23 %) tumours (P = 0.204). No statistical significance was observed between CCNDIAG genotype and tumour grades. While the functional significance of the observed segregation of the CCNDI A/G polymorphism and tumour grade is unclear, our data suggest that CCNDI allele frequencies and genotype distributions show significant differences between tumour grades in sporadic pituitary adenomas. (Abstract truncated at 2000 characters).Vir: Carcinogenesis. - ISSN 0143-3334 (Letn. 22, št. 11, 2001, str. 1801-1807)Vrsta gradiva - članek, sestavni delLeto - 2001Jezik - angleškiCOBISS.SI-ID - 15135449
Avtor
Simpson, D... J. |
Fryer, A... A. |
Grossman, A... B. |
Wass, JAH |
Pfeifer, Marija |
Kros, J... M. |
Clayton, R... N. |
Farrell, W... E.
Teme
Adenoma |
Genetics |
Metabolism |
Pathology |
Cyclins |
Genetics |
Metabolism |
Pituitary neoplasms |
Genetics |
Metabolism |
Pathology |
Codon |
Prolactinoma |
Genetics |
Metabolism |
Pathology |
Corticotropin |
Metabolism |
Genetics |
Dna primers |
Exons |
Genotype |
Introns |
Neoplasm staging |
Polymerase chain reaction |
Polymorphism (genetics) |
Recurrence |
Retrospective studies |
Sequence analysis, dna |
Somatotropin |
Metabolism |
Genetics |
Adenom |
Ciklini |
Hipofizne novotvorbe |
DNA začetki |
Eksoni |
Genotip |
Introni |
Kodon |
Kortikotropin |
Novotvorba, stadij |
Polimeraza, verižna reakcija |
Polimorfizem (genetika) |
Ponovitev |
Prolaktinom |
Retrospektivne študije |
Sekvenčna analiza, DNA |
Somatotropin
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