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Association of the A870G cyclin D1 gene polymorphism with genetic susceptibility to nasopharyngeal carcinoma

✍ Scribed by Raquel J. Catarino; Eduardo Breda; Vânia Coelho; Daniela Pinto; Hugo Sousa; Carlos Lopes; Rui Medeiros

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
129 KB
Volume
28
Category
Article
ISSN
1043-3074

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✦ Synopsis

Abstract

Background.

Nasopharyngeal cancer (NPC) is multifactorial, and the genetic background may be a crucial etiologic factor. Cyclin D1 (CCND1) is a key regulator of the cell cycle, and its altered activity is associated with the development of cancer.

Methods.

We analyzed the A870G CCND1 polymorphism by polymerase chain reaction/restriction fragment length polymorphism (PCR‐RFLP) in 281 individuals, including 94 patients with NPC and 187 healthy individuals.

Results.

Our results indicate that individuals carrying two G alleles have a 2.17‐fold increase in the risk for the development of NPC (odds ratio [OR], 2.17; 95% confidence interval [CI], 1.19–3.98; p = .016). Age‐adjusted logistic regression analysis confirmed this association (adjusted odds ratio [aOR], 2.14; 95% CI, 1.14–4.04; p = .018). Multivariate analysis demonstrates an independent association between GG CCND1 genotype (aOR, 2.06), male sex (aOR, 2.66), and age at diagnosis (aOR, 2.02) regarding the development of undifferentiated NPC. The proportion of NPC cases attributable to the GG CCND1 genotype was 14.76%.

Conclusions.

Our results may be important in the definition of a biologic predictive profile for the development of NPC within our population. © 2006 Wiley Periodicals, Inc. Head Neck, 2006

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