Abstract
The frequency of CYP1B1 polymorphisms in pancreatic cancer has never been reported. There is also no evidence on the relationship between CYP1B1 variants and mutations in ras genes (K-, H- or N-ras) in any human neoplasm. We analyzed the following CYP1B1 polymorphisms in 129 incident cases of pancreatic ductal adenocarcinoma (PDA): the m1 allele (Val to Leu at codon 432) and the m2 allele (Asn to Ser at codon 453). The calculated frequencies for the m1 Val and m2 Asn alleles were 0.45 and 0.68, respectively. CYP1B1 genotypes were out of Hardy–Weinberg equilibrium; this was largely due to K-ras mutated PDA cases. The Val/Val genotype was over five times more frequent in PDA cases with a K-ras mutation than in wild-type cases (OR = 5.25; P = 0.121). In PDA, polymorphisms in CYP1B1 might be related with K-ras activation pathways.
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Abbreviations
- PANKRAS:
-
Multicenter prospective study on the role of the K-ras and other genetic alterations in the diagnosis, prognosis, and etiology of pancreatic and biliary diseases
- PDA:
-
Pancreatic ductal adenocarcinoma
- CYP1B1:
-
Cytochrome P450 1B1
- PAHs:
-
Polycyclic aromatic hydrocarbons
- OR:
-
Odds ratio
- CI:
-
Confidence interval
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Acknowledgments
Supported by research grants from Red temática de investigación cooperativa de centros en Cáncer (C03/10), Red temática de investigación cooperativa de centros en Epidemiología y salud pública (C03/09), and CIBER de epidemiología y salud pública, Instituto de Salud Carlos III, Ministry of Health, Madrid. The authors gratefully acknowledge scientific and technical assistance provided by David J. MacFarlane, Isabel Egea, Elisa Puigdomenech, and Silvia Geeraerd.
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PANKRAS II study group—Members of the multicenter prospective study on the role of K-ras and other genetic alterations in the diagnosis, prognosis and etiology of pancreatic and biliary diseases (PANKRAS II) study group are mentioned in previous publications.
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Crous-Bou, M., De Vivo, I., Porta, M. et al. CYP1B1 Polymorphisms and K-ras Mutations in Patients with Pancreatic Ductal Adenocarcinoma. Dig Dis Sci 53, 1417–1421 (2008). https://doi.org/10.1007/s10620-008-0235-9
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DOI: https://doi.org/10.1007/s10620-008-0235-9