title: CYP26B1 is a novel candidate gene for betel quid-related oral squamous cell carcinoma.
abstract: Substantial epidemiological data suggest a role for environmental factors (for example, the use of alcohol, betel quid (BQ), and cigarettes) in the occurrence of oral squamous cell carcinoma (OSCC), but the evidence for the genes involved has been inconsistent. This study was to investigate the role of CYP26B1, together with the use of alcohol, BQ, and cigarettes, on BQ-related OSCC. The association study (247 OSCC cases and 338 controls) was conducted to examine the possible interplay between CYP26B1 polymorphisms and alcohol, BQ, and cigarettes use. Additional gene expression was evaluated between OSCC tissue and adjacent normal tissue. The genetic polymorphism AA of CYP26B1 appeared to correlate with the risk of OSCC (OR=2.26; 95% CI, 1.35-3.80). Chewing BQ multiplicatively interacted with CYP26B1 AA to increase the OSCC risk (aOR=70.04; 95% CI, 13.62-360.11). The independent risk of OSCC was observed among BQ chewers with CYP26B1 AA, and compared with chewers with the CYP26B1 CC genotype (stratified aOR=2.88; 95% CI, 1.07-7.74). Increased expression of CYP26B1 was observed in tumor tissue compared with adjacent normal tissue. The CYP26B1 gene plays a novel role in the BQ dependent pathogenesis of OSCC.
authors.affiliation: School of Dentistry, College of Dental Medicine, Kaoshiung Medical University, Kaohsiung, Taiwan.
authors.forename: Ping-Ho
authors.initials: PH
authors.lastname: Chen
authors.forename: Ka-Wo
authors.initials: KW
authors.lastname: Lee
authors.forename: Chung-Ho
authors.initials: CH
authors.lastname: Chen
authors.forename: Tien-Yu
authors.initials: TY
authors.lastname: Shieh
authors.forename: Pei-Shan
authors.initials: PS
authors.lastname: Ho
authors.forename: Shu-Jung
authors.initials: SJ
authors.lastname: Wang
authors.forename: Chien-Hung
authors.initials: CH
authors.lastname: Lee
authors.forename: Sheau-Fang
authors.initials: SF
authors.lastname: Yang
authors.forename: Mu-Kuan
authors.initials: MK
authors.lastname: Chen
authors.forename: Shang-Lun
authors.initials: SL
authors.lastname: Chiang
authors.forename: Ying-Chin
authors.initials: YC
authors.lastname: Ko
mesh_terms: D000328:Adult; D000428:Alcohol Drinking / Q000009:adverse effects / Q000235:genetics; D001114:Areca / Q000009:adverse effects*; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000235:genetics*; D016022:Case-Control Studies; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000453:epidemiology / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide / Q000235:genetics; D000072516:Retinoic Acid 4-Hydroxylase; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects / Q000235:genetics; D013624:Taiwan / Q000453:epidemiology
chemical_list: D003577:Cytochrome P-450 Enzyme System; C000607079:CYP26B1 protein, human; D000072516:Retinoic Acid 4-Hydroxylase